Non capture positions

Win: 17.206.795 (74.6%)
Draw: 5.843.384 (25.4%)
Lose: 214 (0.0%)

All positions

Win: 32.911.442 (79.2%)
Draw: 8.640.786 (20.8%)
Lose: 6.012 (0.0%)

Native examples were selected after counting from 9650 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 13, Black 3.

W:W25,K35,50:B39,45

MoveResult
35-30Draw
35-24Draw
35-19Draw
35-13Draw
35-8Draw
35-2Draw
35-40Draw
35-44Draw
35-49Win
25-20Draw
50-44Draw

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 5, Black 3.

W:WK5,13,16:B37,41

MoveResult
5-10Loss
5-14Loss
5-19Loss
5-23Loss
5-28Loss
5-32Draw
13-8Loss
13-9Loss
16-11Loss

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 11, Black 3.

W:WK6,20,45:B39,44

MoveResult
6-1Draw
6-11Loss
6-17Loss
6-22Loss
6-28Loss
6-33Draw
20-14Loss
45-40Win
20-15Loss

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 11, Black 3.

B:WK5,22,39:B37,41

MoveResult
37-42Draw
41-47Draw
41-46Win

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 5, Black 2.

B:WK1,8,21:B44,45

MoveResult
44-50Loss
44-49Draw
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 13, Black 4.

W:WK12,34,40:B33,45

MoveResult
12-7Draw
12-1Draw
12-8Draw
12-3Draw
12-17Loss
12-21Draw
12-26Draw
12-18Draw
12-23Draw
12-29Loss
34-29Win
34-30Draw
40-35Draw

Promotion trap

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

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White to move: Win. Pip count: White 10, Black 3.

W:W9,K38,50:B39,45

MoveResult
38-32Draw
38-27Draw
38-21Draw
38-16Draw
38-33Win
38-29Draw
38-24Draw
38-20Draw
38-15Draw
38-42Draw
38-47Draw
38-43Draw
38-49Win
9-3Draw
50-44Draw
9-4Draw

Both sides at highest pip count: win

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

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

W:WK1,46,47:B4,5

MoveResult
1-6Win
1-7Win
1-12Win
1-18Win
1-23Win
1-29Win
1-34Win
1-40Win
1-45Win
47-41Win
46-41Win
47-42Win

Both sides at highest pip count: loss

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

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

B:WK1,46,47:B4,5

MoveResult
4-10Loss
4-9Loss
5-10Loss