Non capture positions

Win: 30.562 (8.2%)
Draw: 340.477 (91.7%)
Lose: 364 (0.1%)

All positions

Win: 176.586 (26.5%)
Draw: 486.360 (72.9%)
Lose: 3.984 (0.6%)

Native examples were selected after counting from 11455 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 0, Black 13.

W:WK10:B20,25,39

MoveResult
10-4Draw
10-5Draw
10-14Loss
10-19Draw
10-23Draw
10-28Draw
10-32Draw
10-37Draw
10-41Draw
10-46Draw
10-15Win

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 0, Black 12.

W:WK5:B19,23,45

MoveResult
5-10Draw
5-14Loss

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 0, Black 21.

W:WK35:B5,14,25

MoveResult
35-30Loss
35-24Win
35-19Loss
35-13Win
35-8Win
35-2Win
35-40Win
35-44Draw
35-49Draw

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 0, Black 13.

W:WK10:B20,25,39

MoveResult
10-4Draw
10-5Draw
10-14Loss
10-19Draw
10-23Draw
10-28Draw
10-32Draw
10-37Draw
10-41Draw
10-46Draw
10-15Win

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 0, Black 3.

W:WK15:B43,44,45

MoveResult
15-10Draw
15-4Draw
15-20Draw
15-24Draw
15-29Draw
15-33Draw
15-38Loss
15-42Draw
15-47Draw

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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Black to move: Win. Pip count: White 0, Black 15.

B:WK46:B19,23,27

MoveResult
19-24Loss
23-29Draw
27-32Win
23-28Loss
27-31Draw

Promotion trap

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

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Black to move: Win. Pip count: White 0, Black 10.

B:WK15:B19,34,45

MoveResult
19-24Win
34-40Draw
19-23Draw
34-39Draw
45-50Draw

Both sides at highest pip count: win

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

No qualifying example proved from the available WDL data.

Both sides at highest pip count: loss

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

No qualifying example proved from the available WDL data.