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A horrible Stockfish chess engine evaluation
Adjusting parameters in the engine stockfish 6Is Behting Study Still Beating Computers?How to force engine (eg. Stockfish) to play position till checkmate in Lucas Chess?Stockfish crashing on checkmate positions, and erroneous evaluationHow to use ending evaluation in UCI interaction with StockfishStockfish: Engine suddenly changed the side?Stockfish evaluation of a position from PGNHow the engine can detect the 3-fold repetition using FEN input?Oscillating Stockfish Evaluation on LaptopStandard for current position evaluation via UCIs
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
This is the study
[fen "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPBK4/8 w - - 0 1 "]
As you can see, Stockfish gives an absolute decisive win for black, though it is clearly a draw!!
Check it out yourself
c4 is a losing move, while Ba4 is the correct one.
What's going on? Doesn't Stockfish take into consideration closed positions at all?
engines stockfish study
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
add a comment |
This is the study
[fen "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPBK4/8 w - - 0 1 "]
As you can see, Stockfish gives an absolute decisive win for black, though it is clearly a draw!!
Check it out yourself
c4 is a losing move, while Ba4 is the correct one.
What's going on? Doesn't Stockfish take into consideration closed positions at all?
engines stockfish study
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
1
There are lots of positions that Stockfish doesn't evaluate correctly (including some common endgames).
– Qudit
4 hours ago
add a comment |
This is the study
[fen "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPBK4/8 w - - 0 1 "]
As you can see, Stockfish gives an absolute decisive win for black, though it is clearly a draw!!
Check it out yourself
c4 is a losing move, while Ba4 is the correct one.
What's going on? Doesn't Stockfish take into consideration closed positions at all?
engines stockfish study
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
This is the study
[fen "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPBK4/8 w - - 0 1 "]
As you can see, Stockfish gives an absolute decisive win for black, though it is clearly a draw!!
Check it out yourself
c4 is a losing move, while Ba4 is the correct one.
What's going on? Doesn't Stockfish take into consideration closed positions at all?
engines stockfish study
engines stockfish study
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
edited 7 hours ago
Brian Towers♦
19.5k3 gold badges36 silver badges86 bronze badges
19.5k3 gold badges36 silver badges86 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
asked 8 hours ago
William KinaanWilliam Kinaan
1265 bronze badges
1265 bronze badges
1
There are lots of positions that Stockfish doesn't evaluate correctly (including some common endgames).
– Qudit
4 hours ago
add a comment |
1
There are lots of positions that Stockfish doesn't evaluate correctly (including some common endgames).
– Qudit
4 hours ago
1
1
There are lots of positions that Stockfish doesn't evaluate correctly (including some common endgames).
– Qudit
4 hours ago
There are lots of positions that Stockfish doesn't evaluate correctly (including some common endgames).
– Qudit
4 hours ago
add a comment |
1 Answer
1
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Stockfish isn't a perfect chess-playing entity, and you've found a position where it's unable to tell is a draw (at least until the 50 move rule kicks in and helps it prune). These positions are called "fortresses". You can tell this is happening because even if you input the solution, Stockfish still evaluates the final position as -10 or more. These fortress positions where Stockfish is dead wrong are few and far between, but they exist, and this is one of them.
There've been various attempts at writing fortress detection code in Stockfish and other conventional engines which are meant to recognize fortresses and stop Stockfish from heading for them if its position is superior. If you have a smart idea, you can probably publish it in an academic journal (see the publications in the chessprogramming wiki).
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
add a comment |
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Stockfish isn't a perfect chess-playing entity, and you've found a position where it's unable to tell is a draw (at least until the 50 move rule kicks in and helps it prune). These positions are called "fortresses". You can tell this is happening because even if you input the solution, Stockfish still evaluates the final position as -10 or more. These fortress positions where Stockfish is dead wrong are few and far between, but they exist, and this is one of them.
There've been various attempts at writing fortress detection code in Stockfish and other conventional engines which are meant to recognize fortresses and stop Stockfish from heading for them if its position is superior. If you have a smart idea, you can probably publish it in an academic journal (see the publications in the chessprogramming wiki).
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
add a comment |
Stockfish isn't a perfect chess-playing entity, and you've found a position where it's unable to tell is a draw (at least until the 50 move rule kicks in and helps it prune). These positions are called "fortresses". You can tell this is happening because even if you input the solution, Stockfish still evaluates the final position as -10 or more. These fortress positions where Stockfish is dead wrong are few and far between, but they exist, and this is one of them.
There've been various attempts at writing fortress detection code in Stockfish and other conventional engines which are meant to recognize fortresses and stop Stockfish from heading for them if its position is superior. If you have a smart idea, you can probably publish it in an academic journal (see the publications in the chessprogramming wiki).
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
add a comment |
Stockfish isn't a perfect chess-playing entity, and you've found a position where it's unable to tell is a draw (at least until the 50 move rule kicks in and helps it prune). These positions are called "fortresses". You can tell this is happening because even if you input the solution, Stockfish still evaluates the final position as -10 or more. These fortress positions where Stockfish is dead wrong are few and far between, but they exist, and this is one of them.
There've been various attempts at writing fortress detection code in Stockfish and other conventional engines which are meant to recognize fortresses and stop Stockfish from heading for them if its position is superior. If you have a smart idea, you can probably publish it in an academic journal (see the publications in the chessprogramming wiki).
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
Stockfish isn't a perfect chess-playing entity, and you've found a position where it's unable to tell is a draw (at least until the 50 move rule kicks in and helps it prune). These positions are called "fortresses". You can tell this is happening because even if you input the solution, Stockfish still evaluates the final position as -10 or more. These fortress positions where Stockfish is dead wrong are few and far between, but they exist, and this is one of them.
There've been various attempts at writing fortress detection code in Stockfish and other conventional engines which are meant to recognize fortresses and stop Stockfish from heading for them if its position is superior. If you have a smart idea, you can probably publish it in an academic journal (see the publications in the chessprogramming wiki).
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
answered 8 hours ago
AllureAllure
2,4805 silver badges28 bronze badges
2,4805 silver badges28 bronze badges
add a comment |
add a comment |
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There are lots of positions that Stockfish doesn't evaluate correctly (including some common endgames).
– Qudit
4 hours ago