D3-Chess
Chess Unwinnability Analyzer is an implementation of a decision procedure for checking whether there exists a sequence of legal moves that allows a certain player to checkmate their opponent in a given chess position. (by miguel-ambrona)
ChessUnwinnableAnalyzer
Categorizing unwinnable chess positions (by JedGrabman)
| D3-Chess | ChessUnwinnableAnalyzer | |
|---|---|---|
| 11 | 1 | |
| 48 | 0 | |
| - | - | |
| 5.0 | 10.0 | |
| 3 months ago | over 1 year ago | |
| C++ | Python | |
| GNU General Public License v3.0 only | GNU General Public License v3.0 only |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
D3-Chess
Posts with mentions or reviews of D3-Chess.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-01-07.
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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
ChessUnwinnableAnalyzer
Posts with mentions or reviews of ChessUnwinnableAnalyzer.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-09-03.
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An Analysis of Unwinnable Chess Positions
Source code may be found at my Github. The repository also includes all the positions broken down by ply / outcome as they were in this post, if you're interested in seeing additional positions.
What are some alternatives?
When comparing D3-Chess and ChessUnwinnableAnalyzer you can also consider the following projects:
lila - ♞ lichess.org: the forever free, adless and open source chess server ♞
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
Lila - ♞ lichess.org: the forever free, adless and open source chess server ♞ [Moved to: https://github.com/lichess-org/lila]