Non capture positions

Win: 630.419 (7.2%)
Draw: 5.370.435 (61.5%)
Lose: 2.727.283 (31.2%)

All positions

Win: 1.312.598 (10.6%)
Draw: 7.643.214 (61.6%)
Lose: 3.460.868 (27.9%)

Native examples were selected after counting from 14485 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 11, Black 13.

W:W14,50:B12,22,45

MoveResult
14-9Win
50-44Draw
14-10Draw

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 18, Black 27.

W:W48,50:B3,4,5

MoveResult
48-42Loss
50-44Draw
48-43Loss
50-45Loss

Mutual zugzwang

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

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White to move: Loss. Pip count: White 8, Black 26.

W:W12,33:B2,5,6

MoveResult
12-7Loss
33-28Loss
12-8Loss
33-29Loss

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 9, Black 15.

W:W9,42:B10,18,41

MoveResult
9-3Draw
42-37Win
9-4Draw
42-38Loss

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 11, Black 13.

W:W14,50:B12,22,45

MoveResult
14-9Win
50-44Draw
14-10Draw

Draw with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

W:W46,47:B3,4,5

MoveResult
47-41Draw
46-41Draw
47-42Draw

Unique winning sacrifice

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 9, Black 15.

W:W9,42:B10,18,41

MoveResult
9-3Draw
42-37Win
9-4Draw
42-38Loss

Promotion trap

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 9, Black 15.

W:W9,42:B10,18,41

MoveResult
9-3Draw
42-37Win
9-4Draw
42-38Loss

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:W46,49:B3,4,5

MoveResult
3-9Draw
4-10Draw
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.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

W:W46,47:B1,4,5

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