Non capture positions

Win: 15 (0.0%)
Draw: 72.355 (99.8%)
Lose: 150 (0.2%)

All positions

Win: 16.367 (15.5%)
Draw: 88.967 (84.1%)
Lose: 506 (0.5%)

Native examples were selected after counting from 15269 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 1.

W:WK15:B41,K46

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

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 1.

W:WK50:BK6,43

MoveResult
50-44Loss
50-39Loss
50-33Loss
50-28Loss
50-22Loss
50-17Loss
50-11Loss
50-45Draw

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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White to move: Win. Pip count: White 0, Black 1.

W:WK15:B41,K46

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

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 1.

W:WK5:B45,K50

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

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 3.

B:WK35:B34,K49

MoveResult
49-43Draw
49-38Draw
49-32Draw
49-27Draw
49-21Draw
49-16Draw
49-44Draw
49-40Loss
34-40Win
34-39Draw

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 1.

B:WK50:BK39,44

MoveResult
39-33Loss
39-28Loss
39-22Loss
39-17Loss
39-11Loss
39-6Win
39-34Loss
39-30Loss
39-25Draw
39-43Loss
39-48Draw
44-49Draw

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.