Non capture positions

Win: 368.406 (1.9%)
Draw: 15.078.074 (76.2%)
Lose: 4.347.100 (22.0%)

All positions

Win: 3.133.756 (11.3%)
Draw: 19.375.490 (70.1%)
Lose: 5.123.414 (18.5%)

Native examples were selected after counting from 14522 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 27, Black 9.

W:W46,47,49:B5,K32

MoveResult
47-41Loss
49-43Loss
46-41Loss
47-42Win
49-44Loss

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 27, Black 9.

W:W46,47,48:B4,K15

MoveResult
47-41Loss
48-42Draw
46-41Loss
47-42Loss
48-43Loss

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 27, Black 9.

W:W46,47,49:B5,K32

MoveResult
47-41Loss
49-43Loss
46-41Loss
47-42Win
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:W46,47,49:B5,K32

MoveResult
32-27Win
32-21Win
32-16Win
32-28Win
32-23Win
32-19Win
32-14Win
32-10Win
32-37Win
32-41Loss
32-38Win
32-43Loss
5-10Loss

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 8, Black 1.

B:W6,8,31:BK43,45

MoveResult
43-38Draw
43-32Draw
43-27Loss
43-21Draw
43-16Draw
43-39Draw
43-34Draw
43-30Draw
43-25Draw
43-48Draw
43-49Draw
45-50Draw

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 19, Black 2.

W:W18,37,48:BK8,36

MoveResult
18-12Win
37-31Loss
48-42Draw
18-13Loss
37-32Loss
48-43Loss

Promotion trap

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

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White to move: Win. Pip count: White 9, Black 5.

W:W7,11,34:BK16,25

MoveResult
7-1Draw
11-6Draw
34-29Draw
7-2Draw
34-30Win

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:W46,47,49:B5,K32

MoveResult
47-41Loss
49-43Loss
46-41Loss
47-42Win
49-44Loss

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 27, Black 9.

W:W46,47,48:B5,K50

MoveResult
47-41Loss
48-42Loss
46-41Loss
47-42Loss
48-43Loss