Non capture positions

Win: 226.119.869 (99.6%)
Draw: 891.737 (0.4%)
Lose: 0 (0.0%)

All positions

Win: 691.818.917 (99.7%)
Draw: 2.018.589 (0.3%)
Lose: 2.344 (0.0%)

Native examples were selected after counting from 5466 sampled White-quiet boards, including targeted starting-rank and losing candidates. Statistics still cover every enumerated position. An absent example does not prove the category is absent.


Special WDL positions

One example per category. Every starting position is double quiet: neither side has a capture. Results and move outcomes are relative to the player to move in the diagram. Kings have a double ring.

White-to-move examples are preferred; Black-to-move examples are retained when no qualifying White-to-move example was found.

Pip count means remaining rank distance to promotion (kings: zero). Highest pip count puts men nearest their starting ranks; both sides must simultaneously attain their material's maximum. Material disadvantage means fewer pieces.

Only move to win

At least three legal moves; exactly one wins and every alternative draws or loses.

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White to move: Win. Pip count: White 6, Black 2.

W:WK8,K17,K24,32:B43,45

MoveResult
8-2Draw
8-3Draw
8-12Draw
8-13Draw
8-19Draw
17-11Draw
17-6Draw
17-12Draw
17-21Draw
17-26Draw
17-22Draw
17-28Draw
17-33Draw
17-39Draw
17-44Draw
17-50Win
24-19Draw
24-13Draw
24-20Draw
24-15Draw
24-29Draw
24-33Draw
24-38Draw
24-42Draw
24-47Draw
24-30Draw
24-35Draw
32-27Draw
32-28Draw

Only move to draw

At least two legal moves; exactly one draws and every alternative loses.

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Black to move: Draw. Pip count: White 4, Black 2.

B:WK7,K14,K17,23:B43,45

MoveResult
43-49Loss
43-48Loss
45-50Draw

Mutual zugzwang

On this same board, White to move loses and Black to move loses.

No qualifying example proved from the available WDL data.

Whoever moves wins

On this same board, White to move wins and Black to move wins.

No qualifying example proved from the available WDL data.

Win with fewer pieces

The player to move has fewer pieces and a proven win.

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Black to move: Win. Pip count: White 8, Black 3.

B:WK10,K13,K22,41:B39,44

MoveResult
44-50Win
39-43Loss
44-49Loss

Draw with fewer pieces

The player to move has fewer pieces and a proven draw.

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Black to move: Draw. Pip count: White 2, Black 2.

B:WK12,14,K19,K24:B44,45

MoveResult
44-50Draw
44-49Draw
45-50Draw

Unique winning sacrifice

Exactly one of at least two moves wins; every compulsory reply captures the piece offered by that move.

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White to move: Win. Pip count: White 4, Black 2.

W:WK15,23,K24,K41:B43,44

MoveResult
15-10Draw
15-4Draw
15-20Draw
24-19Draw
24-13Draw
24-8Draw
24-2Draw
24-20Draw
24-29Draw
24-33Draw
24-38Win
24-42Draw
24-47Draw
24-30Draw
24-35Draw
41-36Draw
41-37Draw
41-32Draw
41-28Draw
41-46Draw
41-47Draw
23-18Draw
23-19Draw

Promotion trap

A promotion draws or loses, while a non-promoting move wins.

No qualifying example proved from the available WDL data.

Both sides at highest pip count: win

Both sides attain their maximum pip count; the player to move wins.

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White to move: Win. Pip count: White 9, Black 18.

W:WK1,K32,K33,46:B4,5

MoveResult
1-6Win
1-7Win
1-12Win
1-18Win
1-23Win
1-29Win
1-34Win
1-40Win
1-45Win
32-27Win
32-21Win
32-16Win
32-28Win
32-23Win
32-19Win
32-14Win
32-10Win
32-37Win
32-41Win
32-38Win
32-43Win
32-49Win
33-28Win
33-22Win
33-17Win
33-11Win
33-6Win
33-29Win
33-24Win
33-20Win
33-15Win
33-38Win
33-42Win
33-47Win
33-39Win
33-44Win
33-50Win
46-41Win

Both sides at highest pip count: loss

Both sides attain their maximum pip count; the player to move loses.

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Black to move: Loss. Pip count: White 9, Black 18.

B:WK1,K32,K33,46:B4,5

MoveResult
4-10Loss
4-9Loss
5-10Loss