Non capture positions

Win: 17.354.654 (16.0%)
Draw: 86.770.497 (79.8%)
Lose: 4.590.483 (4.2%)

All positions

Win: 86.529.024 (31.1%)
Draw: 183.658.061 (66.1%)
Lose: 7.688.590 (2.8%)

Native examples were selected after counting from 8605 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 9, Black 36.

W:WK15,46:B1,2,3,4

MoveResult
15-10Loss
15-20Draw
15-24Draw
15-29Draw
15-33Draw
15-38Draw
15-42Draw
15-47Draw
46-41Win

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 10.

W:WK7,38:B26,27,44,45

MoveResult
7-1Loss
7-2Loss
7-11Loss
7-16Loss
7-12Loss
7-18Draw
7-23Loss
7-29Loss
7-34Loss
7-40Loss
38-32Loss
38-33Loss

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 9, Black 36.

W:WK13,46:B1,2,3,4

MoveResult
13-8Loss
13-9Loss
13-18Loss
13-22Win
13-27Win
13-31Win
13-36Win
13-19Draw
13-24Draw
13-30Draw
13-35Draw
46-41Loss

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 9, Black 36.

W:WK5,46:B1,2,3,4

MoveResult
5-10Loss
5-14Draw
5-19Draw
5-23Draw
5-28Win
5-32Draw
5-37Draw
5-41Draw
46-41Win

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 9, Black 36.

W:WK12,46:B1,2,3,4

MoveResult
12-7Loss
12-8Loss
12-17Draw
12-21Draw
12-26Draw
12-18Loss
12-23Draw
12-29Draw
12-34Draw
12-40Draw
12-45Draw
46-41Loss

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 8, Black 24.

W:WK43,44:B1,2,24,45

MoveResult
43-38Draw
43-32Draw
43-27Draw
43-21Draw
43-16Loss
43-39Loss
43-34Loss
43-30Loss
43-25Loss
43-48Draw
43-49Draw
44-39Loss
44-40Win

Promotion trap

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

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White to move: Win. Pip count: White 1, Black 17.

W:W8,K13:B2,21,38,41

MoveResult
13-9Loss
13-4Win
13-18Loss
13-22Draw
13-27Loss
13-31Draw
13-36Win
13-19Loss
13-24Win
13-30Draw
13-35Draw
8-3Draw

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 9, Black 36.

W:WK5,46:B1,2,3,4

MoveResult
5-10Loss
5-14Draw
5-19Draw
5-23Draw
5-28Win
5-32Draw
5-37Draw
5-41Draw
46-41Win

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 9, Black 36.

B:WK22,46:B1,2,3,4

MoveResult
1-7Loss
2-8Loss
3-9Loss
4-10Loss
1-6Loss
2-7Loss
3-8Loss
4-9Loss