Monthly Archives: March 2021

Happy Birthday Animal Crossing New Horizons! Year In Review For A Hall Of Fame Classic – Hot Hardware

Posted: March 21, 2021 at 4:37 pm

Sometimes, a work of art hits our culture at just the right time, when it can transcend its medium and become something greater. Such events are exceedingly rare in video games, but we old folks remember Pac-Man Fever and Fred Savage in The Wizard playing Super Mario Bros. 3. More recently, video games have become spectator sports in large part due to StarCraft II, DotA 2,and Overwatch and similar genre game titles. None of those moments found humanity in a time of crisis, however, until Animal Crossing: New Horizons launched on the Nintendo Switch a year ago today. Across the globe, entire countries were in lock-down mode and nobody was quite sure what to do. Tom Nook hit the scene with his private island, and it was the escape we all needed. Today, let's look back on theyear in Animal Crossing: New Horizons during these defining times in history, and relive some of the triumphs along the way.Animal Crossing: Remembering The Early DaysIt's a little unusual for a game to launch on a Friday, but it was the perfect weekend time sink that then turned into a year-long obsession. That first weekend didn't have any big events, but millions of people got acclimated to island life, collected fruit, and explored randomly-generated islands. It wasn't until the following weekend that Daisy Mae, granddaughter of Sow Joan, showed up in town to sell turnips on the Stalk Market. We all got settled into our tents, and later houses, caught bugs and fish, dug up fossils, and just got away from it all. For those whose islands were in the Northern Hemisphere, spring was imminent. Island residents in the Southern Hemisphere were the first to witness the turning of the leaves into autumn.

Animal Crossing: New Horizonsmakes a point to celebrate many global major holidays. The first one to hit the game was Bunny Day, when Zipper T. Bunny came to town and asked residents to find six eggs that could be used in crafting recipes to make all kinds of themed decorations. Bunny Day will be the first ACNH holiday to happen for the second time soon. Holiday-themed events got bigger and bigger as the year progressed, and more island visitors made their way to island cultures worldwide, too. The May Day Maze made for a fun puzzle with treasures at the end of the road.

It wasn't all fun and games for Nintendo, however. Animal Crossing caught the eye of watchful Chinese censorsafter a Hong Kong protester created a "Free Hong Kong" themed island and welcomed visitors. While Nintendo had teamed up with TenCent for a Chinese release, the game never did launch in the country. There was also an actively-exploited item duplication bug that temporarily wrecked the in-game economy for some folks and spawned numerous eBay listings with duplicated bugs.

Year-end holidays hit the game at a fast and furious pace. Turkey Day on November 26 depicted an actual turkey cooking Thanksgiving dinner. Shortly after that came Toy Day, where all of the residents received and exchanged gifts. The New Year's Eve event was a real show-stopper complete with a giant countdown in the town plaza where everybody gathered to ring in the new year together. And of course, each holiday brought with it more items to buy and activities to complete.

Animal Crossing: New Horizons holds value beyond just the revenue that it earned for Nintendo. There's no doubt that ACNH was a lifeline to millions of people who were locked down in 2020 during a year of uncertainty and weight we all carried. In our house, the game still gets quite a bit of play. We bought three copies for three Switches, and my family routinely visited one another on our own islands, which further brought us together in good, clean family fun. For that, Nintendo definitely has our thanks.

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‘Vaxication’ in the Maldives: What to Know About Vaccine Tourism – Tatler Singapore

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Private islands in the Maldives to escape to post-vaccination and their plan to roll out a visit, vaccinate and vacation programme

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With vaccination programmes continuing apace, the prospect of having a vaxicationa term coined to describe the first trip people take after getting their jabsis closer to becoming reality. The Maldives is best placed to receive an influx of travellers as its border has been open to international tourists since July 2020 and its set-up allows for natural social distancing. The local travel industry has also been quick to implement protocols including rapid testing upon arrival and before departure as well as when transferring resorts.

(Related: 12 Luxury Resorts In The Maldives For Your Post-Vaccination Trip)

Apart from welcoming vaccinated travellers, it was recently reported that Dr Abdulla Mausoom, the Maldivian Minister of Tourism, has confirmed that theyre working on a 3V initiative, which stands for visit, vaccinate, and vacation.

It aims to offer travellers two doses of Covid-19 vaccines several weeks apart encouraging weeks-long stays in the island nation. The minister did highlight the shortfall in supply as a potential road bump and stressed that the countrys immunisation programme that began in February still prioritises residents with workers in the tourism industry getting inoculated first.

(Related: What are Digital Passports and How Can They Help Us Travel Again Amid the Pandemic?)

With this positive news, it surely doesnt hurt to daydream about lazing on a sandy atoll and there are plenty of new places to choose from. One is IthaafushiThe Private Island, the latest addition to the Waldorf Astoria Maldives resort, which at nearly 345,000 sq ft makes it the largest of its kind in the country.

In Dhivehi, the local language of the Maldives, its name means Pearl Island, which befits this crown jewel of Hiltons luxury portfolio in the region. The expansive private island has a two-bedroom overwater villa, a three-bedroom beach villa and a four-bedroom residence that together accommodate a total of 24 guests, who can spend their days relaxing by the myriad pools or snorkelling in the sparkling waters of the Indian Ocean.

Ithaafushi - The Private Island has a 24-hour personal concierge and a separate wellness concierge to attend to every whim, from organising elaborate sundowner parties to arranging bespoke fitness training and spa treatments. Guests familiar with our Waldorf Astoria hotels have come to expect the most personalised service from our dedicated team of personal concierges each time they stay with us. At Ithaafushi - The Private Island, this is taken to a whole new level, says Nils-Arne Schroeder, vice president of luxury and lifestyle for Hilton in the Asia-Pacific.

(Related: Hotel Review: Tatler Checks Into...Waldorf Astoria Maldives Ithaafushi)

Those staying at Ithaafushi also have access to the many amenities and restaurants of the main resort, including The Ledgea modern grill by Dave Pynt of Burnt Ends, the Singapore chophouse that ranked number five on Asias 50 Best Restaurants 2020 list. The private island is also a breeze to get to, only requiring a 40-minute yacht ride or 15-minute seaplane flight from Male Airport.

Come summertime, said to be the best season to visit the Maldives, travellers can choose not just a new resort, but a completely new hotel brand. Singapore-based Capella Hotel Group is opening the inaugural property of Patina Hotels & Resorts in a few months.

Patina Maldives is part of the Fari Islands archipelago on the North Male Atoll. The Fari Islands is comprised of four different islands, two of which will be home to other luxury hotel brands The Ritz-Carlton Maldives and Capella Maldives.

(Related: 5 Luxury Boutique Hotels to Visit Around the World Once its Safe to Travel Again)

The first-ever Patina hotel features 90 one- to three-bedroom villas and 20 studios designed by Brazilian architect Marcio Kogan of Studio MK27, who adhered to the principles of biophilic architecture resulting in spaces defined by a calming, natural feel. Guests can freely move to and from the various islands within the archipelagochoosing from the total privacy of their suite or heightened interaction at the nearby Fari Marina Village and Fari Beach Club. Only a 50-minute boat ride from Male, Patina Maldives is an ideal place for an extended holiday or a luxurious work-from-hotel arrangement.

(Related: 6 Nature-Inspired Hotels and Resorts with Elements of Biophilic Design)

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The Most Popular Place to Visit the Channel Islands National Park has reopened for recreation The Log – The Log Newspaper

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Scorpion Anchorage is once again welcoming visitors to the east end of Santa Cruz Island.

VENTURAConstruction of a new pier at Scorpion Anchorage is finished and is accessible again for all who want to visit.

Construction of a new pier caused this popular spot to remain closed for visitation for 18 months, but it is now accessible by personal craft or the Island Packer ferryboats. Santa Cruz Island is the largest of the five islands that make up the national parkAnacapa, Santa Barbara, Santa Cruz, Santa Rosa, and San Miguel islandsit is the most visited as well.

During construction of the pier, neither ferryboats nor private craft were allowed to anchor at Scorpion or go ashore. Now boaters may use one of two ladders on the pier to drop off and pick up visitors. The Island Packer ferryboats are authorized to use the new lift ramp to land passengers. Private boaters may not use the lift as it requires park staff to operate the lift.

A fire broke out above Scorpion Canyon last fall, scorching about 1,400 acres. This area from Scorpion Valley to Smugglers Cove is open for hiking, as long as hikers stay on the marked trail, to help island flora to revegetate.

Camping is now open as well in Scorpion Canyon but currently limited to tent sites in the Upper Loop. The Lower Loop campground is undergoing tree and limb removal of damaged trees in the area. Crews are on-site to take care of any damaged trees and limbs and the park is expecting the campground to reopen in March.

Scorpion Anchorage is the most visited destination in the park, with about 65,000 people coming ashore each year to enjoy recreational activities such as hiking, picnicking, camping, kayaking, swimming, snorkeling, and diving.

Wildflower season has begun on the island with the amazing bright yellow blooms of the giant Coreopsis know as tree sunflowers coming to life. Other island native plants and trees are beginning to bloom as well. Its a great time to visit the east end of Santa Cruz Island.

For the latest information and status of the Channel Islands National Park, go to http://www.nps.gov/chis/parknews/newsreleases.htm

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The Most Popular Place to Visit the Channel Islands National Park has reopened for recreation The Log - The Log Newspaper

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18 Best Chess Engines of 2021 | Based On Their Ratings …

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A chess engine usually analyzes thousands of outcomes before making an efficient move. Since the hardware and programming techniques are getting better year by year, chess engines are becoming more intelligent. Modern engines are more selective and have a better positional understanding.

If you construct a complete tree of all possible moves in a chessboard, you will get a total of 10120 moves. Thats an extremely large number.

To put this into perspective, there have been only 1026nanosecondssince the Big Bang and estimated1075atoms in the entire universe. These numbers are dwarfed by the number of possible moves in chess, making it one of the most complex board games.

There are literally hundreds of rating lists that measure the relative strength of chess engines, based on how many moves they make per minute. In addition to ranking chess engines from best to worst, these lists also provide margins of errors on the given ratings.

Among these rating lists, the most famous are CCRL (Computer Chess Rating Lists) and CEGT (Chess Engines Grand Tournament). Keeping both these ratings in mind, we are presenting the most advanced Chess Engines that demonstrate the machines domination over humanity.

CCRL Rating: 3229CEGT Rating: 3094

Hannibal is a Universal Chess Interface (UCI) engine that incorporates ideas from earlier engines, Twisted Logic, and LearningLemming. It uses the alpha-beta technique with many other chess specific heuristics and relies on a selective search method.

Besides incredible endgame knowledge, the engine has a good understanding of material imbalances.It also understands the fortresses and trapped pieces and can sacrifice material for the initiative on king attacks.

Furthermore, Hannibals time management is tuned for the Fischer time controls.

CCRL Rating: 3232CEGT Rating: 3098

Critter is the UCI chess engine available for Windows, Mac, Android, and Linux. You can use it for private purposes only. It was initially written in Delphi but later converted to C++ using Bitboard technology. This was done to enhance its performance on 64-bit processors.

This chess engine features null move pruning, forward pruning, principal variation search, parallel search with up to 8 threads, and blockage detection in the endgames.

CCRL Rating: 3533

SugaR engine is derived from Stockfish and supports up to 128 cores. Like other popular engines such as Stockfish, SugaR is not a complete chess program. It requires compatible GUI, such as XBoard with Arena, PolyGlot, Shredder, Sigma Chess, and Chess Partner.

Since the engine is distributed under the General Public License, you are allowed to modify and sell it.

CCRL Rating:3506

asmFish is a Stockfish engine port written in x86 assembly language. It usesBMI2 and AVX2 instructions optionally. It is assembled with FASM for Linux and Windows platforms.

asmFish is built with some structural optimization techniques, such as the elimination of piece lists. Critical functions dont conform to the x86 ABI, concerning the usage of register and calling convention. However, less time-critical functions were ported through GCC assembly output.

Nevertheless, the engine is NUMA (non-uniform memory access) aware and supports parallel search and large pages.

CCRL Rating: 3241CEGT Rating: 3123

Chiron is the commercial chess engine that supports both Universal Chess Interface and Chess Engine Communication Protocol, as well as several endgame tablebase and bitbase formats.

It applies a parallel search on multiprocessor architectures and implements pawn blockage detection that not only detects blockages in pawn endgame but also identifies other pieces on the board.

The latest version has been tuned deeply, especially in the context of passing pawns and mobility. Several advanced search enhancements have also been introduced, such asLazy symmetric multiprocessing, forward pruning, and NUMA awareness

CCRL Rating: 3253CEGT Rating: 3122

Equinox is a symmetric multiprocessing chess engine primarily developed by Giancarlo Delli Colli. It is inspired by popular open-source engines like Stockfish, Crafty, and Ippolit.

Equinox is active in several private engine tournaments, including Italian Open Chess Software Cups and Thoresen Chess Engine Competition.

CCRL Rating: 3261CEGT Rating: 3183

GullChess is an open-source chess engine that applies magic bitboards to determine sliding piece attacks. It is mostly written in the C++ programming language and contains only one source file.

Gull Engine features generic function templates in recursive search routines, as well as several other functions for move generation (excluding hash move and side to move).

CCRL Rating: 3284

Schooner uses alpha-beta search, late move reductions (LMR), principle search window (PVS), and single hash entry. It supports a subset of Universal Chess Interface to automatically play games without hogging a lot of resources.

Its performance has been improved significantly in recent years: a simpler evaluation inspired by Xiphos, staged move generation, and tons of testing and tuning are responsible for those improvements.

CCRL Rating: 3324CEGT Rating:3193

Xiphos is an open-source chess engine written in C and distributed under GNU General Public License. Its a UCI compliant engine that utilizes bitboards withERLEFmapping.

Xiphos uses sliding piece attacks, which are evaluated by either PEXT bitboards (for BMI2) or magic bitboards. If you want to try, you can run this engine on Windows, macOS, and Linux.

CCRL Rating: 3324CEGT Rating: 3153

Shredder is a commercial chess engine developed in 1993. It has won more than 20 titles, including World Microcomputer Chess Championship (1996, 2000), World Computer Chess Championship (1999, 2003), World Chess Software Championship (2010), and World Computer Speed Chess Championship (5 times).

Deep Shredder is the multiprocessor version of Shredder. It comes with a graphical user interface, developed by Millennium Chess System, which supports Universal Chess Interface and is compatible with other UCI engines available for Mac OS, Windows, and Linux.

WCCC 2011,Boootvs.Alex Morozov

CCRL Rating: 3326CEGT Rating: 3234

Booot is an open-source chess engine written in Delphi 6. It determines sliding piece attacks with rotated bitboards. It is packed with lazy SMP and a fully redesigned evaluation function.

The engine applies PVS with all basic search enhancements like late move reductions, null move pruning, and internal iterative deepening. The latest version supports multiprocessor architecture and has several assembly variants for 32 and 64 bits.

CCRL Rating: 3337CEGT Rating: 3209

First published in 2014,Andscacssoon evolved into one of the worlds best chess engines. It uses magicbitboardto speed up the attack calculations. It applies a principal variation searchwith a transposition tableinside an iterative framework.

Andscacs features static exchange evaluation and threaded parallel search. And it tries a hash move in quiescence search.

In order to make the engine more powerful and efficient (or minimize the standard deviation of static evaluation), researchers optimized 200 evaluation features with 750,000 positions.

Read: Googles AlphaZero AI Masters Chess and Go Within 24 Hours

CCRL Rating: 3347CEGT Rating:3211

Fizbois a Chess Engine Communication Protocol, first released in 2014. It is based onbitboardand uses population count instruction. For now, the engine is compatible with Windows and requires CPU withpop-countinstruction.

Besides iterative deepening, Fizbo performs parallel searches based on an enhanced PV splitting algorithm. Furthermore, the transposition table with 8-byte entries is used in the quiescence search.

CCRL Rating: 3386CEGT Rating: 3290

Ethereal is an open-source engine developed by Andrew Grant. Its a UCI-compliant chess engine first released in 2016 under the GNU GPL license.

Ethereal is greatly influenced by Stockfish, MadChess, and Crafty. In addition to the conventional alpha-beta framework, it uses various improvements, ranging from reduction and pruning to extension.

CCRL Rating: 3430CEGT Rating: 3319

Fireis a free chess engine that was used to be open source but later became a closedWindows executable, available for new Intel processors. It was initially known as Firebird and later renamed to Fire due to the trademarknamingconflict.

The Fire engine features magicbitboards, Syzygytablebases, configurable hash, andmultiPV. You can configure it with over 70 Universal Chess Interface options, and applySMP parallel search.

CCRL Rating: 3508CEGT Rating:3424

Komodo was derived from an older search engine, Doch, as a major rewrite and a port of Komodo to C++11. Since it relies on evaluation (instead of depth), it has a quite different positional style.

The engine supports up to 64 cores, Syzygy endgame tablebase, and Fischer random chess. Kodomo lets you save the engines analysis of a position so you can check it later and resume analysis. You can also control how the engine makes long-term sacrifices of pawn structure for dynamic play.

Komodo has won three-times Top Chess Engine Championship.

CCRL Rating: 3529CEGT Rating:3444

Houdini is known for its engines positional style, ability to defend strongly, tenacity in hard positions, and escape with a draw.

So far, it has won 3 seasons of Top Chess Engine Championship.

The new version of Houdini comes in 2 variations Standard and Pro. While the previous version supported up to 8 processor cores only, the Pro version supports up to 128 cores and 128 GB of RAM. It is NUMA aware and can utilizeNailmov endgame table bases.

Read: 15 Advanced Artificial Intelligence Projects

CCRL Rating: 3463CEGT Rating: 3467

Inspired by Deepminds research about AlphaZero and AlphaGo Zero, Leela Chess Zero relies on a self-taught neural network to make smart moves. The network learns through deep learning techniques by playing against itself millions of times.

Instead of using conventional AlphaBeta search with handcrafted evaluation function, it utilizes a type of Monte Carlo Tree Search (MCTS) known as puct. To achieve its full potential, you need to run the chess engine on CUDA-supported GPU.

CCRL Rating: 3564CEGT Rating: 3512

Stockfish is an open-source UCI engine available for various desktop and mobile platforms. It is based on another open-source chess engine namedGlaurung.

Read: 8 Best Artificial Intelligence Programming Languages

Written in C++, the engine can utilize up to 512 CPU cores. The maximum size of its transposition table is 1 Terabyte. Beside implementing an alpha-beta search, the engine features aggressive pruning and late move reductions.

Note: Since CCRL and CEGT rating lists change continuously, the ranking can differ from time to time.

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History Of Chess Computer Engines – Chessentials

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INTRODUCTION

Throughout history, chess was revolutionized several times.

In the late 19th century, the first World Champion Wilhelm Steinitz provoked his opponents to attack him vigorously and laid the foundations of positional chess.

In the middle of the 20th century, the sixth World Champion Mikhail Botvinnik started devoting an enormous amount of time to physical and chess preparation before the tournaments and matches, announcing the era of strict chess professionalism.

In the 1970s, largely under the influence of eleventh World Champion Robert James Fischer, the opening theory went through massive changes. New opening systems such as the Hedgehog were introduced and new ideas were discovered in ancient opening systems, demonstrating the inexhaustible nature of chess.

Nothing else, however, has revolutionized chess so much as the appearance of computer chess engines. Nowadays, even the biggest beginners are familiar with the terms Stockfish and Rybka (especially when they are shouting their names in online chats while kibitzing the games of top chess players). Even a chess computer on your mobile phone is stronger than a grandmaster nowadays. It is not surprising players have started using them as a tool and learning from them.

Even though we all embrace computer chess engines as something normal and use them on a daily basis, most of us arent familiar with the challenges and problems previous generations had to face in order to create one. Who devised the first computer chess engine? How long did it take for computers to become stronger than humans? What is the difference between classical computer chess engines and Googles Alpha Zero?

In this article, we will answer these questions and take a closer look at the history of computer chess engines.

In 1769, French illusionist Francois Pelletier was performing an act in front of Maria Theresa of Austria, at the Schnbrunn Palace in Vienna. Among the onlookers was Hungarian inventor and author Wolfgang von Kempelen. Inspired by Pelletiers performance, Kempelen immediately started building the invention which would later become one of the most notorious hoaxes in the entire history.

Next year, in 1770, at the exact same place, Kempelen exhibited the Turk the first chess-playing automaton in history. Its complicated construction consisted of several compartments with various operational mechanisms. It incorporated a life-sized model of a human, dressed in traditional oriental clothes (hence its name).

Turk was capable of playing chess on its own and beating human opponents. It was even able to recognize illegal moves and force its opponents to take them back. In one exhibition, it even solved the difficult knight-tour-around-the-board puzzle.

There was just one problem. It was all fake. The Turk was not the one making all the moves. A human hidden inside it was.

You see, during the construction, Kempelen envisioned several hidden compartments, big enough to fit an adult. He even made sliding hallways, through which a person was able to move from one compartment to another. It was important to preserve the illusion before each exhibition, Kempelen would invite the audience to examine the automaton, during which the operator of the machine would remain hidden.

And it worked? Kempelen toured Europe exhibiting his invention until his 1804. After his death, the machine changed several owners and continued playing chess until 1854, when a fire in Philadelphia sealed its fate. It is amazing no one realized the fraud during the Turks lifetime.

Thus, the first computer chess engine was a major commercial success.

However, if we disregard several similar automatons, the development of chess engines was stalled during the next 100 years. The real breakthrough happened only in the late 1940s and early 1950s. And just like with many other technological advances, a major historical event fulfilled the role of the catalyst.

During World War II, Axis and Allies leadership spent a lot of time hiring top scientists and gathering them into teams. The purpose was clear winning the war. Greatest minds of the 20th century devoted their wartime years to developing technology and weapons that will help overpower the enemy. The science was in service of the war industry.

In spite of that, the war led to a startling amount of breakthroughs. Scientists laid a foundation for a number of new fields. In the context of this article, computer science is of particular interest. Two famous names played the crucial role in its development Claude Shannon and Alan Turing.

Shannon is widely recognized as the father of the modern information theory, while Turing is the father of the modern computer (Turings machine!). Their contributions to the field of computer science are well known. What is perhaps lesser known, is that Shannon and Turing are also fathers of chess computer engines.

After finishing their PhDs on the eve of the war, Shannon and Turing both started working on cryptanalysis, in USA and UK, respectively. They closely followed each others work and even met in person back in 1943, during Turings two-month stay at Bells Lab in New York, where Shannon was working. After the war ended, they both took an increased interest in programming a chess computer.

(Main source describing the relationship between Shannon and Turing: Life In Code And Digits When Shannon Met Turing)

In 1949, Shannon published an iconic paper titled Programming a Computer For Playing Chess, in which he described an algorithm for the chess-playing machine. Simultaneously, Turing was developing his own chess playing program. His work on Turbochamp started back in 1948 and finished in 1950.

(Link to Shannons article)

It is noteworthy to mention Turing programmed Turbochamp on paper, without access to an actual computer. He tried testing it on Ferranti Mark I the first commercially available computer and failed. In the end, he tested it manually (!) in a friendly chess game in 1951.

(51 years later, none other than Garry Kasparov tested Turbochamp. The program didnt stand a chance, but the greatest players of all times recognized how tremendous Turings achievement was source: Alan Turing Created A Chess Computer).

It is not yet certain whether Shannon and Turing worked independently or were inspired by each other the content of their conversations in 1943 is not known. However, even if they didnt collaborate, their contributions were immense. Subsequent generations of computer chess developers all stood on the shoulders of these two giants.

In 1951, Turings colleague Dietrich Prinz managed to implement the algorithm on Ferranti Mark I and created a program capable of solving mate in two. In 1956, a team of scientists led by Stan Ulam (one of the inventors of the h-bomb)created a program capable of playing chess on a 66 board. And finally, in 1957, IBM engineer Alex Bernstein created the first automated program fully capable of playing a complete game of chess.

The era of computer chess has officially begun.

The first computer chess engines were rather weak and primitive. During the 1960s and the 1970s, however, their strength increased rapidly. Two major factors contributed to this qualitative leap:

In the 1960s and 1970s, algorithms for the computer chess engines were significantly improved. The foundation was set by the genius of John Von Neumann, who developed the MiniMax algorithm, perfectly suited for the game of chess (it minimizes the score of one player while maximizing the score of another). In the decades that followed, MiniMax search was improved with advanced heuristic techniques and iterative deepening, which gradually increased the depth of the search by MiniMax.

The greatest restriction for Turing and other pioneers was computing power. In the 1960s and 1970s, however, hardware speed increased exponentially according to Moores law, the computing power doubled every two years. It allowed the implementation of advanced algorithms the search time for MiniMax was significantly decreased.

It was not only the matter of raw computing power, though. In the 1960s and 1970s, computer chess gained prominence. The first all-computer chess championship was staged in 1970 in New York. Shortly afterward, in 1974, first World Chess Computer Chess Championship was staged in Stockholm. The appearance of the scene inevitably led to the foundation of specialized companies which started developing customized chess playing software and hardware. Which allowed computer chess engines to get even better.

How good get better was? How good were computer chess engines compared to humans at a time? Experience showed good enough to beat an amateur, not good enough to compete with a master.

For instance, in 1967, MacHack VI became the first computer chess engine to beat a human opponent. Its playing strength revolved around 1300 USCF rating. But already in 1976, a significant leap happened chess computer engine Chess 4.5 won the Class B Section of the Paul Mason tournament in Northern California. In 1977 it also won Minnesota Open with the performance rating of 2271 and beat a Class A player Stenberg rated 1969.

However, the computers werent on equal terms with stronger humans. In 1968, International Master David Levy bet 3000$ he would be able to beat any chess computer engine in the next 10 years. In 1977, he won his bet in a match against chess computer engine KAISSA. He also beat the newer version of MacHack in 1978.

Therefore, at the end of the 1970s, could compete against humans, but couldnt play on a master level.

But then the 1980s arrived.

By the start of the 1980s, computer chess engine programming has become a lucrative business. Personal computers have become widespread in households. The interest in customized and specialized software including computer chess engines exploded. In 1982 alone, computer chess companies topped 100 million in sales.

It is not surprising, thus, that computer chess engines continued improving. In 1980, their programming became a serious competition. Edward Fredkin, professor of computer science at Carnegie Mellon University, introduced the Fredkin Prize. He offered monetary prizes for various achievements in the world of computer chess programming (5000$ for the first engine to reach Master level, 10000$ for the first engine to reach Grandmaster level, 100000$ for the first engine to beat the World Champion).

The race was on. The number and strength of computer chess engines continued increasing.

Fredkins colleague from Carnegie Mellon University led the way. The most notable project and the spearhead of an entire generation is Deep Thought the first chess computer engine which reached Grandmaster Level. In 1988, it shared the first place with Grandmaster Tony Miles in US Open Championship. In 1989, it easily beat International Master David Levy four games to zero.

The downfall of humanity seemed inevitable. In the search for its Champion, it turned to the reigning World Champion and arguably the greatest player of all times Garry Kasparov. First, in an iconic simultaneous exhibition in Hamburg in 1985, he played against 32 (!) strongest chess engines and beat all of them (!!). Then, in 1989, he faced Deep Thought in a two-game match, which he also won.

(Source: Kasparov And Thirty Years Of Computer Chess)

Therefore, in his encounters with engines in the 1980s, Garry became the chosen one.

Alas, in the 1990s, he too would fall.

Thus, in 1989, humanity won the battle, but not yet the war. In the 1990s, many more clashes between humans and computer chess engines were held. Top chess engines even competed in elite chess tournaments with mixed success. Several human vs machine matches were organized, but none of them became famous as the match in which the engine defeated the World Champion in 1997.

In 1989, researchers involved in the Deep Thought project were hired by IBM. They started developing a more powerful version of the engine.

The name of the project was Deep Blue. In 1996, only 7 years after the Kasparov Deep Thought match, round two of man vs. machine was held: the first Kasparov Deep Blue match. In the very first game, Deep Blue shocked Kasparov and became the first chess computer engine to beat a World Champion in a classical game. However, Garry composed himself and won the match with the result 4-2, prolonging the inevitable once again.

The failure didnt disheartenDeep Blue programmers. During the next year, they continued to improve the engines strength. They even hired Grandmaster Joel Benjamin as a consultant to help them build the opening book. After thorough preparation, they challenged Kasparov to a rematch again and as they say the rest is history.

In the celebrated match, Kasparov won the first game. But the engines counterintuitive 44th move confused him. It shook his confidence and he missed serious drawing chances in the 2nd game. Then Deep Blue crushed him in 6th game with a knight sacrifice early in the opening. This sealed Kasparovs fate and earned Deep Blue team the Fredkin Prize.

(Source: Deep Blue Inventors Win Fredkin Prize)

After the match, he claimed IBM cheated and that a human was actually making the moves (Joel Benjamin). Other sources speculated a bug in Deep Blues code brought him victory.

(Source: Did Deep Blue Beat Kasparov Because Of A Glitch?)

In any case, 1997 symbolically marked the end of human domination over the chess computer engines.

However, humans didnt yet resign.

After Deep Blues victory, everyone expected the gap between the humans and machines to widen further. However, over the next six years, until roughly 2003, humanity made its last stand.

For instance, in 2000, computer chess engine Deep Junior participated in the Dortmund Elite Supertournament and scored just 50%. In 2002, new World Champion Vladimir Kramnik drew his match against computer chess engine Deep Fritz (despite a catastrophic mate-in-one blunder). In 2003, Garry Kasparov drew two matches against Deep Junior 7 and X3d Fritz.

Alas, this small ray of hope was quickly destroyed by computer chess engine Hydra. In 2004, it beat GMs Evgeny Vladimirov (3-1) and Ruslan Ponomariov (2-0). Then, in 2005, it destroyed Michael Adams, a member of the world top 10, with a devastating score: 5.5-0.5.

And in 2006, Deep Fritz drove the final nail in the coffin of humanity by beating the World Champion Vladimir Kramnik 4-2.

The 2006-2017 decade is the golden era of the computer chess engines.

On an everyday basis, computer chess engines infiltrated all areas of chess from broadcasting and analyzing to playing. They became an integral tool for any chess tournament player. They raised a generation of strong youngsters the so-called computer generation. When smartphones appeared, their Android and iOS versions were immediately developed, to the horror of any tournament anti-cheating committee.

World Chess Computer Championship continued growing. Due to the prestige and money involved, some controversies ensued. The most infamous case is the disqualification of the computer chess engine Rybka, the consecutive winner of the four editions between 2007-2010, due to code plagiarization.

(Source: Rybka, The Worlds Best Chess Engine, Outlawed and Disqualified)

Apart from the World Chess Championship, a new competition was introduced in 2010 Top Chess Engines Competition. In contrast to the WCC, TCEC features longer games played using high-end hardware, which leads to a higher quality of chess.

The human-machine matches proved the gap is widening. Over the decade, a number of handicap matches were held, in which engines gave various odds to strong grandmasters. The results were depressing for humanity. For instance, in 2014, computer chess engine Stockfish defeated GM Daniel Naroditsky who used the assistance of an early version of Rybka. In 2015, computer chess engine Komodo played 6 odds games against Sergei Movsesian, a former top 10 member and crushed him easily. And in 2016, Hikaru Nakamura, a current member of world top 10, feel down to Komodo as well.

(Sources: Man Versus Machine Historical Archive and Komodo Beats Nakamura In Final Battle)

In any case, during the 2006-2017 period, classical computer chess engines dominated. Until the end of 2017, nothing revolutionary happened. Their strength changedconsistently, but slowly. Everything seemed familiar and nobody expected any radical changes, any major breakthroughs.

Then AlphaZero happened.

On 5th December 2017, a group of scientists from Google AI company Deep Mindshattered the chess world.

In the paper titled Mastering Chess and Shogi by Self-Play with a General Reinforcement Learning Algorithm, they described the development of a new chess engine, AlphaZero, based on a completely new approach. Instead of alpha-beta searching and linear approximation function for position evaluation used by traditional engines, AlphaZero uses non-linear approximation function based on a deep neural network and Monte Carlo Simulation. As a consequence, instead of brute-forcing through the analysis, AlphaZero is able to self-learn chess.

The team tested thestrength of the new engine in a 100 game match against the strongest classical chess engine available at the moment Stockfish 8. The result of the match was staggering +28-0=72 in AlphaZeros favor. But what was even more impressive was AlphaZeros style of play it was much more intuitive and human-like than the play of the traditional engines.

The reactions to the paper were mixed. Many chess players were amazed the mighty Stockfish suffering such a defeat was indeed a miracle. But on the other hand, there was a lot of skepticism. A lot of criticism has been directed toward the playing environment of the match Stockfish ran on inferior hardware and played without an opening book. One interesting article on Medium was very careful to label Alpha Zero a scientific breakthrough in AI.

However, on 7th December 2018, another paper was published by the Deep Mind team, titled A general reinforcement learning algorithm that masters chess, shogi, and Go through self-play. In it, they presented the results of another match between Alpha Zero and Stockfish. Out of 1000 games, A0 won 155 games and lost only 6. Even though the older version of Stockfish was used, it is an impressive result.

Irrespective of whether skepticism is justified or not, Alpha Zero made a significant impact on the chess world. They forced everyone to start pondering about what is coming next. They might signify the start another revolution.

One thing is certain: with the entry of AI, computer chess engines will never be the same.

The Best Schools: Brief History Of Computer Chess

Bill Wall: Early Chess Computers

HPC Wire: Deep Blue Inventors Win Fredkin Prize For Computer Chess

IBM: DeepBlue

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Shawn Vestal: A year haunted by all that we did not do – The Spokesman-Review

Posted: at 4:37 pm

Talk about cancel culture.

Our calendar of events was cleared completely byCOVID.

Bloomsday. Get Lit! The Friends of Manito Plant Sale.

The Spokane Bike Swap and Expo. The YWCAs Spring Fling fund-raiser.

The Shadle Park Spring Craft Show. The Spokane Speed and Custom Show.

From our largest traditions to our smallest gatherings canceled. Its been a year haunted by the not-done, the rain check, the unperformed.

A year without festivals without Hoopfest and ArtFest and Musicfest Northwest and the Coeur dAlene Blues Festival and the Spokane Blues Festival.

A year without concerts without Cher or Allen Stone or Sleater-Kinney or Ronnie Milsap or The Flaming Lips or Wilco.

A year without dinner and a show. Without movies out or theater. Without The Book of Mormon or Jersey Boys at the First Interstate Center. Without Matilda at the Lake City Playhouse or Cabaret at the Civic Theatre.

Canceled. The things we do every year undone. The special events we planned for unscheduled. All the connections we make with our people unconnected. At best, we Zoomed.

A lost year.

It started a little more than 12 months ago, as it was becoming more and more obvious that the pandemic was big trouble. The governor would not issue his stay-home order until March 23, but the cancellations and postponements were already piling up.

Looking back, it is striking how many organizations announced that they were merely postponing things, rescheduling events for a few months down the road. Before long, it became pointless to keep track of what was canceled and what was not.

Everything was.

The big, broad effects of those cancellations have gotten the lions share of the attention, naturally schools shut down, restaurants shuttered, workplaces emptied. The major losses to life and well-being have been the rightful focus.

But theres been a massive loss in cultural, community events, too.

Almost all of the gatherings that signal our seasons and rescue us from solitude gone. Graduations. Potlucks. Proms. Weddings. Funerals in the darkest of ironies, in a year of such loss, even our ways of grieving together have been lost.

Chess club and Math is Cool and volleyball. Poetry readings and car shows. Fairgrounds and libraries. Gyms and senior centers. Climbing walls and rec-league sports and drinks out with co-workers.

Hooptown lost its hoops. The NCAA tournament was canceled, and with it Spokanes round of games. Hoopfest was postponed, then canceled. As the pandemic dragged on, a particular cruelty was visited on Spokane basketball fans, as the undefeated Zags the apotheosis of a decadeslong development of a basketball dynasty composed their perfect season before cardboard fans, in echoing gymnasiums.

The sacrifices were necessary, of course. The greater losses, to life and well-being, compelled them, and still do. And yet these past 12 months have been so strange, so divorced from the communitys cycle of life, that it has left us starved for culture and connection.

Will we get that back soon? Stand shoulder-to-shoulder at a Wilco concert, crowd into the Cracker Building for Terrain, see Cats again, swarm around the gleaming engines at a car show or see our neighbors at a flower sale or bingo game? Stay out too late at a bar, pack a table a little too full at a restaurant? Hear the roar at the McCarthey Center or Reese Court or Union Stadium?

Of course we will. Were getting there now, though it could not possibly come fast enough. The calendar will fill, and our points of connection and culture and community will return.

Well arrive there, in that life of the uncanceled calendar, on the other side of this lost year, as though we are landing on a lovely new shore. A place we know well, seen as if for the first time, with fonder hearts and fresh eyes and a raging hunger to be among each other once again.

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Ask the Expert: The Link Between Psoriasis and Male Fertility – Healthline

Posted: at 4:36 pm

Yes.

In a variety of studies, testosterone was found to be significantly decreased in people with psoriasis.

In men, lower levels of testosterone are associated with:

As you might expect, studies also revealed that total sperm count, sperm motility and percent of sperm with normal morphology were significantly reduced in participants with psoriasis.

Fewer available sperm and sperm motility issues can make it harder to conceive spontaneously.

These findings suggest that untreated psoriasis may impair male fertility.

The link between psoriasis and decreased fertility may be due to how systemic inflammation affects the production of sex hormones.

Inflammation triggers a cascade of inflammatory cytokines (a type of protein), which can have a destructive impact on a variety of organ systems, including reproductive systems. This influx of cytokines may lead to decreasing sex hormone production and sperm production.

The link may also be related to the inflammation of sexual accessory glands. In one small 2017 study, 70 percent of participants with psoriasis were found to have ultrasound signs of inflammation of the accessory glands. No one in the non-psoriasis control group showed these signs.

Sexual accessory glands in men include the seminal vesicles and prostate. These glands help to create the fluids in semen that protect and transport sperm. Inflammation in these glands could also negatively affect sperm, decreasing chances of conception.

Psoriasis treatments aimed at decreasing systemic inflammation, such as anti-TNF agents, have been shown to improve male fertility.

Anti-TNF medications currently approved by the Food and Drug Administration (FDA) for treating psoriasis include:

However, some other immunosuppressant medications, like sulfasalazine, show evidence of decreasing sperm quality. That said, there currently isnt enough evidence to definitively determine which are beneficial or harmful to sperm production and fertility.

Any autoimmune disease or condition that leads to significant systemic inflammation can affect fertility.

This includes conditions like:

Yes, by seeking early treatment to prevent and control any systemic inflammation.

The first step is working with your doctor on a treatment that manages the disease well enough to avoid systemic inflammation. Your treatment is likely to include medications and lifestyle modification to help avoid flares.

These lifestyle modifications may include things like:

Dr. Susan Bard is a NYC-based board certified dermatologist and fellow of the American College of Mohs Surgery. Dr. Bard received her medical degree from SUNY Downstate. She completed her dermatology residency at the University of Miami as well as a clinical research fellowship in pediatric dermatology and a procedural dermatology fellowship, where she further trained in Mohs micrographic surgery, lasers, and cosmetic surgery.

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Psoriasis and the immune system: Relationship, causes, and more – Medical News Today

Posted: at 4:36 pm

Psoriasis is a chronic, noncontagious skin condition that causes skin cells to build up and form red, inflamed patches.

Following decades of research, doctors remain unclear as to the exact causes of psoriasis. But they understand that the immune system, genetics, and environmental factors can play a key role.

This article will look at psoriasis and the immune system and how to boost immunity. It will then explore possible complications of psoriasis, as well as triggers and treatments.

Many experts classify psoriasis as an autoimmune disorder, although others disagree. One alternative theory is that psoriasis occurs because the immune system reacts irregularly to bacteria on the skin due to genetics.

In an autoimmune disease, specific triggers cause the immune system to malfunction. These triggers vary between individuals. But in the case of psoriasis, they can include stress and skin trauma, such as insect bites, sunburn, and scratches.

In psoriasis, the activated immune system mistakenly launches an inflammatory response. It begins to attack healthy cells as though they were harmful invading pathogens. White blood cells called T helper lymphocytes, or T cells, become irregularly active and produce excess signaling molecules.

These cytokine molecules cause the blood vessels in the skin to widen. In turn, this causes white blood cells to accumulate, and keratinocytes, which make up the outer layer of the skin, to multiply much faster than usual.

In psoriasis, the process of a cell dividing, maturing, migrating to the skins surface, and sloughing off is complete in as few as 37 days, compared with 34 weeks in a person without psoriasis.

The result of this skin buildup is thickened, flushed, and scaly skin plaques.

Learn what psoriasis on black skin can look like here.

Learn five facts about psoriasis and the immune system here.

There are many different types of psoriasis.

Researchers believe that a combination of factors can cause an individual to develop psoriasis.

In some cases, genetics can be a cause, as the condition often runs in families. If a child has one affected parent, they have a 16% chance of developing psoriasis. With both parents, the chance jumps to 50%.

But some individuals with no family history may also develop psoriasis. This finding highlights the effect environmental factors such as stress, smoking, and diet may have on psoriasis development.

Having a properly functioning immune system is essential to health.

There are various ways that individuals with psoriasis can regulate their immune systems through diet and exercise.

According to a 2018 study, following a Mediterranean diet can slow the progression of psoriasis since it reduces inflammation.

The Mediterranean diet consists of the following:

People use this yellow spice in cooking and natural medicines. Turmeric may positively impact someones immune response.

According to one 2017 paper, the curcumin found in turmeric has antioxidant and anti-inflammatory effects.

So, turmeric may reduce symptoms of many conditions that inflammation can worsen, including psoriasis.

Garlic may boost the immune system.

One 2014 review showed that study participants taking a placebo had over twice as many colds between them as the people taking garlic supplements.

The researchers recommended further research to confirm the immune-modulating effects of garlic.

Regular exercise can improve immune system functions.

One study found that 3060 minutes of daily brisk walking improves the bodys defense system.

Regular exercise can also be important for people with psoriasis, as it can reduce the risk of other complications they are more likely to experience, such as high blood pressure or diabetes.

Psoriasis appears on the skin and nails, but problems with the immune system that cause psoriasis can cause other conditions alongside it.

Psoriatic arthritis, or joint inflammation, occurs in around 30% of people with psoriasis.

Psoriatic arthritis can be a painful and destructive inflammatory type of arthritis. But symptoms may reduce with treatment.

Psoriasis can mean a person has a higher risk of developing cardiovascular diseases such as:

This is possibly due to the inflammation that occurs with all the conditions.

People with psoriasis may feel emotional distress that disrupts their regular social interactions or working life.

According to a 2018 study, people with psoriasis have an increased risk of experiencing depression and anxiety.

Individuals with psoriasis may have different triggers, and the condition may run in families.

Common triggers that can cause flare-ups in people with psoriasis can include:

Learn about the causes of psoriasis here.

If psoriasis is mild, treatment with a skin moisturizer, medicated shampoo, and exposure to sunlight may be enough to alleviate symptoms.

But most people require medical therapies to manage their psoriasis. Options include:

Corticosteroid ointments, gels, and lotions of varying strengths can reduce inflammation and itching.

Long-term use of potent topical corticosteroids can cause skin thinning and damage. So, doctors may recommend forms of vitamin D and vitamin A instead of, or in conjunction with, steroid use. They may also prescribe corticosteroid-free, immune-modulating topicals for delicate areas instead.

Doctors can use UV radiation to treat moderate to severe psoriasis.

They may prescribe UVB in combination with other topical medications and reserve UVA for psoriasis that does not respond to other treatments.

Learn about light therapy for psoriasis here.

Learn about home remedies to ease psoriasis here.

Doctors remain unclear as to the exact causes of psoriasis. There is evidence for genetic involvement, as those with a family history of psoriasis are more likely to have it themselves.

Psoriasis appears to be an autoimmune response, with specific triggers causing the immune system to react against healthy tissue.

Although it cannot be cured, individuals can manage the symptoms with various therapies. These include topical corticosteroid creams, phototherapy, and biologic immunosuppressant agents.

Further research is needed to understand the inheritance and immune system involvement of psoriasis.

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Psoriatic Arthritis and Hypothyroidism: Are They Related? – Healthline

Posted: at 4:36 pm

Psoriatic arthritis (PsA) is an inflammatory form of arthritis that causes swollen, stiff, and painful joints.

PsA affects about 30 percent of people with psoriasis, a skin condition characterized by scaly, red skin patches.

Hypothyroidism affects your thyroid the butterfly-shaped gland in your neck that produces hormones. When you have hypothyroidism, this gland doesnt make enough thyroid hormones.

The most common cause of hypothyroidism is Hashimotos thyroiditis, an autoimmune condition in which white blood cells of the immune system mistakenly attack cells in the thyroid gland.

PsA and psoriasis are also autoimmune disorders. These conditions cause your immune system to attack healthy joints and skin. In hypothyroidism, your immune systems target is the thyroid gland.

Read on to learn how these two conditions are related.

Psoriasis isnt a symptom of hypothyroidism. But if you have psoriasis or PsA, youre more likely to have at least one other autoimmune disease, including:

In autoimmune thyroid disease, the immune system makes proteins called antibodies that damage the thyroid gland.

People with PsA and psoriasis are more likely to test positive for thyroid antibodies than people without these conditions. In one study, about a third of people with psoriasis had a thyroid condition, too.

Thyroid hormones act on many different parts of your body, including your skin. These hormones may trigger psoriasis and make symptoms worse.

Thyroid hormones increase the level of growth factors that cause the skin cells that form scaly psoriasis plaques to multiply. Excess thyroid hormone production makes psoriasis worse.

Hypothyroidism isnt a skin disease. But like psoriasis and PsA, it can affect your skin.

Skin symptoms of hypothyroidism include:

A few different triggers can result in flares of psoriasis or make the skin condition worse. Common psoriasis triggers include:

Some medications also cause psoriasis flare-ups. Certain prescription drugs can:

The medications most likely to cause a psoriasis flare-up are:

It usually takes 2 to 3 weeks after you start taking a new drug for psoriasis symptoms to appear. If you stop taking a corticosteroid drug such as prednisone too quickly, it can also set off a psoriasis flare.

If you take one of these medications and notice that your psoriasis is getting worse, dont stop taking it. Talk with your doctor instead. Ask if you can switch to another drug that wont affect your skin.

Generalized myxedema is a complication of severe hypothyroidism. It causes:

Doctors treat myxedema rash with corticosteroid creams and injections.

Pretibial myxedema (PTM) is a red, swollen, and thick skin rash. Its a rare symptom of thyroid conditions such as Hashimotos thyroiditis and Graves disease.

This rash forms when hyaluronic acid, a natural lubricant your body makes, builds up under your skin. The affected skin becomes thick and has the texture of an orange peel.

PTM most often appears on the shins or the tops of the feet. It also can form on areas like your:

Reach out to a doctor if you have symptoms of PsA or Hashimotos thyroiditis that dont go away.

PsA symptoms include:

Hashimotos thyroiditis symptoms include:

Your doctor will ask about your symptoms and medical history. You may need blood tests to find out whether your thyroid hormone level is too low or imaging tests to check your joints for damage.

PsA and hypothyroidism are both types of autoimmune disorders. When you have PsA or psoriasis, youre also more likely to have thyroid disease.

If you have symptoms of PsA or hypothyroidism, contact your doctor for an exam. Treatments can slow the joint damage and skin plaques of PsA as well as restore normal hormone levels in hypothyroidism.

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Challenging AbbVie and Lilly in psoriatic arthritis, J&J touts 2-year data for Tremfya – FiercePharma

Posted: at 4:36 pm

When Johnson & Johnson scored approval for Tremfya inpsoriatic arthritis last year, the company set outin crowded field withentrenched competition. But now thedrugmakerhasnew long-term datato bolsterits drugs case.

Indata from an extended phase 3 trial,more than half of adults on Tremfya achieved complete skin clearance at two years,J&J said. More than 70% of patients achieved 20% improvement or betterin joint symptoms.Previously, the drug showed benefits through 24 weeksleadingto an FDA approval last yearand through 52 weeks.

Specifically, among patients who had experienced clinically meaningful skin involvement at baseline, 59% of patients who received Tremfya every four weeksand 53% of those who received the drug every eight weeksexperienced complete skin clearance, J&J said.

About 90% of patients randomized toreceiveTremfya in the study continued their treatment through100 weeks, J&J said.Aside from the skin clearance and joint symptom effects, the two-year data confirmed earlierfindingsdemonstrating the meds benefits tophysical function and other quality-of-life factors, J&J said.

The results further bolster our confidence in the ability of Tremfya to significantly improve the diverse manifestations ofPsAover time, Janssen R&D rheumatology disease area leader Alyssa Johnson said in a statement.

RELATED:J&J's Tremfya grabs psoriatic arthritis nod, setting up a battle with Cosentyx, Taltz and more

Investigators are presenting the data at theInnovations in Dermatology virtual spring meeting.

The resultsgive J&Ja stepped-up talking point in a competitivefield. When Tremfya won itsFDA approval in psoriatic arthritis last year, the company set out to launch its drug against meds from AbbVie, Novartis and Eli Lilly. Plus, Lillys Taltz boastshead-to-head dataover the J&J drug.

RELATED:Johnson & Johnson's Tremfya backs psoriatic arthritis play with newest data

J&Js Tremfya, first approved inlate 2017 to treat plaque psoriasis,generated$1.35 billion last year.

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