Non capture positions

Win: 86.449 (0.3%)
Draw: 13.163.908 (44.5%)
Lose: 16.326.844 (55.2%)

All positions

Win: 1.007.304 (2.4%)
Draw: 18.364.875 (44.2%)
Lose: 22.186.061 (53.4%)

Native examples were selected after counting from 14810 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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Black to move: Win. Pip count: White 6, Black 5.

B:W10,26:BK18,28,45

MoveResult
18-12Draw
18-7Draw
18-1Draw
18-13Draw
18-9Draw
18-4Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
18-34Draw
18-40Draw
28-33Draw
28-32Draw
45-50Win

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 7, Black 2.

W:W13,26:BK3,44,45

MoveResult
13-8Loss
13-9Loss
26-21Draw

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 17, Black 12.

W:W45,50:B1,K33,35

MoveResult
45-40Win
50-44Loss

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 17, Black 12.

W:W45,50:B1,K33,35

MoveResult
45-40Win
50-44Loss

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 3, Black 2.

W:W7,13:BK25,44,45

MoveResult
7-1Draw
13-8Draw
7-2Draw
13-9Draw

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 17, Black 12.

W:W45,50:B1,K33,35

MoveResult
45-40Win
50-44Loss

Promotion trap

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

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Black to move: Win. Pip count: White 8, Black 2.

B:W12,34:BK19,44,45

MoveResult
19-13Win
19-8Draw
19-2Win
19-14Draw
19-10Draw
19-5Draw
19-23Draw
19-28Draw
19-32Draw
19-37Draw
19-41Draw
19-46Draw
19-24Draw
19-30Draw
19-35Draw
44-50Win
44-49Win
45-50Draw

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 18.

B:W46,47:B4,5,K50

MoveResult
50-44Win
50-39Win
50-33Win
50-28Win
50-22Win
50-17Win
50-11Win
50-6Win
50-45Win
4-10Win
4-9Win
5-10Win

Both sides at highest pip count: loss

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

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

W:W46,47:B4,5,K50

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