Non capture positions

Win: 750.271 (0.2%)
Draw: 51.243.509 (14.4%)
Lose: 305.099.868 (85.4%)

All positions

Win: 4.979.079 (0.9%)
Draw: 123.038.110 (22.0%)
Lose: 430.733.411 (77.1%)

Native examples were selected after counting from 12912 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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Black to move: Win. Pip count: White 4, Black 8.

B:W12,13:BK5,30,35,45

MoveResult
5-10Draw
5-14Win
5-19Draw
5-23Draw
5-28Draw
5-32Draw
5-37Draw
5-41Draw
5-46Draw
30-34Draw
35-40Draw
45-50Draw

Only move to draw

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

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White to move: Draw. Pip count: White 4, Black 6.

W:W6,16:BK12,31,37,45

MoveResult
6-1Draw
16-11Loss

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.

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White to move: Win. Pip count: White 15, Black 13.

W:W36,41:B12,K22,24,42

MoveResult
36-31Loss
41-37Win

Win with fewer pieces

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

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White to move: Win. Pip count: White 15, Black 13.

W:W36,41:B12,K22,24,42

MoveResult
36-31Loss
41-37Win

Draw with fewer pieces

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

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White to move: Draw. Pip count: White 3, Black 4.

W:W7,13:B38,44,45,K50

MoveResult
7-1Draw
13-8Draw
7-2Loss
13-9Draw

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 15, Black 13.

W:W36,41:B12,K22,24,42

MoveResult
36-31Loss
41-37Win

Promotion trap

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

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

B:W7,37:BK13,43,44,45

MoveResult
13-8Win
13-2Win
13-9Win
13-4Win
13-18Win
13-22Win
13-27Win
13-31Draw
13-36Win
13-19Win
13-24Win
13-30Win
13-35Win
43-49Win
44-50Win
43-48Draw
44-49Win
45-50Win

Both sides at highest pip count: win

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

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Black to move: Win. Pip count: White 18, Black 27.

B:W46,47:B3,4,5,K50

MoveResult
50-44Win
50-39Win
50-33Win
50-28Win
50-22Win
50-17Win
50-11Win
50-6Win
50-45Win
3-9Win
4-10Win
3-8Win
4-9Win
5-10Win

Both sides at highest pip count: loss

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

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White to move: Loss. Pip count: White 18, Black 27.

W:W46,47:B3,4,5,K50

MoveResult
47-41Loss
46-41Loss
47-42Loss