lila
D3-Chess
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lila | D3-Chess | |
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794 | 11 | |
14,558 | 48 | |
1.3% | - | |
10.0 | 5.0 | |
about 19 hours ago | 2 months ago | |
Scala | C++ | |
GNU Affero General Public License v3.0 | GNU General Public License v3.0 only |
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lila
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Lessons from Open-Source Game Projects
Lichess - Online Chess Server. Scala, TypeScript
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Avoid blundering: 80% of a winning strategy
> the player who committed more blunders lost 86% of the time
In some sense this is almost tautological. While finding an exact definition for a chess blunder isn't straightforward, here is one example from the Lichess UI:
https://github.com/lichess-org/lila/blob/b527746b179cdde6438...
Basically, if you make a move which decreases your winning probability more than 14% over the best move, that's a blunder. But winning probability is a nonlinear function of stockfish centipawns. A drop in 100 centipawns when you're up 15 points isn't a blunder. When the game was equal, it is.
Point is, by the time you know it's a blunder you already know something about the outcome of that move, that it swung the winning probability by more than 14%. So the analysis is kind of just measuring some function of winning probability and saying that it is highly correlated with winning probability.
- How I hacked chess.com with a rookie exploit
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So bad at chess that it’s genuinely upsetting at this point, I need some hope
If you want to improve make it your goal to play the best chess you can, not increase an arbitrary number. Watch YouTube series like John Bartholomew's "Climb the Rating Ladder" for some general insight into what you might be doing wrong. Read Irving Chernev's "Logical Chess: Move By Move" to see the thinking process of high level players. Do lots of puzzles (I like lichess.org for puzzles). And always analyze your games. When you analyze make it your goal to find at least two things you could have improved.
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Humans vs. Stockfish’s eval function
The easiest way to play against Stockfish is perhaps on https://lichess.org/, but it's not the only chess engine that evaluates positions with a neural network.
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Venruki’s take on the current issues with PvP
Lichess.com
- Death wants to take you, but you can challenge it to a game (virtual or not) to stay. what do you play?
- Ask HN: What fuel for my data furnace?
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The DGPT season opener will be sponsored by chess.com!
if you actually like chess, try lichess.org, the free and open-source, no ads ever, premium alternative
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I got a Chessnut Evo to review, here are my thoughts
The Chessnut Evo works almost flawlessly (I did not experience this issue but people have reported having ChessnutVision stop working on occasion which requires turning on/off to fix) with popular chess sites (officially supported are chess.com, lichess.org, Chess Kid and Chessable). I experienced no major lag when playing games on Lichess through the board There is the unavoidable delay of physically moving pieces, so it may not be ideal for blitz But for rapid or longer time controls. the ability to have your OTB games instantly logged and the ability to effortlessly analyze games after is game-changing for me. The one occasional hiccup I encountered was when quickly sliding pieces, it would register an incorrect move. But that’s an easy fix of adjusting the Limbo move delay (I don't like this option as it makes the board feel less responsive I prefer to just be aware and lift pieces instead of sliding).
D3-Chess
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If black would run out of time in this position, would it count as a draw or as a win?
Is it, though? Checking for a mate can be very difficult for humans in some positions and tools like https://chasolver.org/ exist, making it reasonably easy for computers. The chess websites just haven't implemented it yet.
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If white flagged black would this be a draw or win because there’s no checkmate possible
Here is a project on github that aims to solve this exact problem, determining when a game cannot be won by a given side. The algorithm appears to be completely accurate, terminating either when it finds a helpmate or when it is certain that a position is unwinnable, but their FAQ says that while it does well on every known position in the lichess games database, it could be very slow on some highly artificial positions.
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in this position if white dont make any move and run out of time it will be a draw (USCF RULES)
Actually, since few months ago, there is: https://github.com/miguel-ambrona/D3-Chess
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An Analysis of Unwinnable Chess Positions
Of course, somebody eventually made a project to find all of these games and created the Chess Unwinnability Analyzer (known as CHA):
- Draw by insufficient material on chess.com
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In this position, any move White makes leads to mate in 1 for Black. But if white sits there and lets their own clock run out, I believe it is legally a Draw by insufficient mating material
Anyway, here's a helpmate solver that could be implemented into Lichess.
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I reached this position that checkmate is impossible for both sides. Lichess didn't call it a draw so I flagged my opponent.
For all we know the cost to implement this could be negligible, or not. I would lean not considering someone has made a software that can process positions in an average of 5 microseconds. CHA
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Is there any name for this position? No progress seems possible. The position looks strange but is achievable in a normal game (albeit almost always deliberately). Tried on lichess and it doesn't draw, the game continues indefinitely.
There is a project to try to solve this, it's a very interesting problem. https://github.com/miguel-ambrona/D3-Chess
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If white ran out of time, would it be a loss for white or a draw?
According to this: https://github.com/miguel-ambrona/D3-Chess
What are some alternatives?
listudy - Listudy - chess training server
Lila - ♞ lichess.org: the forever free, adless and open source chess server ♞ [Moved to: https://github.com/lichess-org/lila]
Mindustry - The automation tower defense RTS
ChessUnwinnableAnalyzer - Categorizing unwinnable chess positions
Anki-Chess-2.0 - An interactive chess template for anki.
python-chess - A chess library for Python, with move generation and validation, PGN parsing and writing, Polyglot opening book reading, Gaviota tablebase probing, Syzygy tablebase probing, and UCI/XBoard engine communication
monkeytype - The most customizable typing website with a minimalistic design and a ton of features. Test yourself in various modes, track your progress and improve your speed.
logseq - A local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base. Use it to organize your todo list, to write your journals, or to record your unique life.
katrain - Improve your Baduk skills by training with KataGo!
peek - Simple animated GIF screen recorder with an easy to use interface
maia-chess - Maia is a human-like neural network chess engine trained on millions of human games.
fishnet - Distributed Stockfish analysis for lichess.org