Non capture positions

Win: 6.110 (0.0%)
Draw: 2.003.040 (9.1%)
Lose: 19.985.818 (90.9%)

All positions

Win: 3.981.575 (7.2%)
Draw: 19.681.815 (35.8%)
Lose: 31.315.765 (57.0%)

Native examples were selected after counting from 9425 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 0, Black 35.

W:WK48:B1,7,8,12,32

MoveResult
48-42Loss
48-37Loss
48-31Loss
48-26Loss
48-43Win
48-39Loss
48-34Loss
48-30Draw
48-25Loss

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 0, Black 10.

W:WK8:B28,37,40,43,45

MoveResult
8-2Loss
8-3Loss
8-12Loss
8-17Loss
8-21Loss
8-26Loss
8-13Loss
8-19Loss
8-24Loss
8-30Loss
8-35Draw

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 0, Black 35.

W:WK48:B1,7,8,12,32

MoveResult
48-42Loss
48-37Loss
48-31Loss
48-26Loss
48-43Win
48-39Loss
48-34Loss
48-30Draw
48-25Loss

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 0, Black 35.

W:WK48:B1,7,8,12,32

MoveResult
48-42Loss
48-37Loss
48-31Loss
48-26Loss
48-43Win
48-39Loss
48-34Loss
48-30Draw
48-25Loss

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 0, Black 19.

W:WK42:B8,22,28,44,45

MoveResult
42-37Draw
42-31Draw
42-26Loss
42-38Loss
42-33Loss
42-29Loss
42-24Loss
42-20Loss
42-15Loss
42-47Loss
42-48Loss

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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Black to move: Win. Pip count: White 0, Black 30.

B:WK42:B6,14,17,23,28

MoveResult
6-11Draw
14-20Win
17-22Draw
23-29Draw
28-33Loss
14-19Draw
17-21Draw
28-32Draw

Promotion trap

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

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Black to move: Win. Pip count: White 0, Black 9.

B:WK26:B29,40,43,44,45

MoveResult
29-34Win
43-49Win
44-50Win
29-33Win
43-48Win
44-49Draw
45-50Win

Both sides at highest pip count: win

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

No qualifying example proved from the available WDL data.

Both sides at highest pip count: loss

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

No qualifying example proved from the available WDL data.