Non capture positions

Win: 344.925.367 (52.5%)
Draw: 311.780.541 (47.5%)
Lose: 13.329 (0.0%)

All positions

Win: 811.240.094 (65.2%)
Draw: 424.596.375 (34.1%)
Lose: 7.633.231 (0.6%)

Native examples were selected after counting from 8479 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 14, Black 1.

W:W7,25,K35,49:BK17,45

MoveResult
35-30Draw
35-24Draw
35-19Draw
35-13Draw
35-8Draw
35-2Draw
35-40Draw
35-44Win
7-1Draw
25-20Draw
49-43Draw
7-2Draw
49-44Draw

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 15, Black 1.

B:W6,K13,30,50:BK38,45

MoveResult
38-32Loss
38-27Loss
38-21Loss
38-16Loss
38-33Loss
38-29Loss
38-24Loss
38-20Loss
38-15Loss
38-42Loss
38-47Loss
38-43Draw
38-49Loss

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 23, Black 3.

W:W26,K42,47,49:BK29,33

MoveResult
42-37Win
42-31Win
42-38Loss
42-48Win
47-41Loss
49-43Loss
26-21Loss
49-44Loss

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 27, Black 9.

B:WK45,46,49,50:BK1,3

MoveResult
1-6Loss
1-7Loss
1-12Loss
1-18Loss
1-23Loss
1-29Loss
1-34Loss
1-40Loss
3-9Draw
3-8Win

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 27, Black 9.

B:WK5,48,49,50:B4,K46

MoveResult
46-41Loss
46-37Loss
46-32Loss
46-28Loss
46-23Loss
46-19Loss
46-14Loss
46-10Loss
4-10Draw
4-9Draw

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 14, Black 1.

W:W7,25,K35,49:BK17,45

MoveResult
35-30Draw
35-24Draw
35-19Draw
35-13Draw
35-8Draw
35-2Draw
35-40Draw
35-44Win
7-1Draw
25-20Draw
49-43Draw
7-2Draw
49-44Draw

Promotion trap

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

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White to move: Win. Pip count: White 14, Black 1.

W:W7,25,K35,49:BK17,45

MoveResult
35-30Draw
35-24Draw
35-19Draw
35-13Draw
35-8Draw
35-2Draw
35-40Draw
35-44Win
7-1Draw
25-20Draw
49-43Draw
7-2Draw
49-44Draw

Both sides at highest pip count: win

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 27, Black 9.

W:WK3,46,47,48:B5,K7

MoveResult
3-8Win
3-12Loss
3-17Win
3-21Win
3-26Win
3-9Win
3-14Win
3-20Win
3-25Win
47-41Win
48-42Win
46-41Win
47-42Win
48-43Win

Both sides at highest pip count: loss

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Loss. Pip count: White 27, Black 9.

B:WK3,46,47,48:B5,K7

MoveResult
7-1Loss
7-2Loss
7-11Loss
7-16Loss
7-12Loss
7-18Loss
7-23Loss
7-29Loss
7-34Loss
7-40Loss
7-45Loss
5-10Loss