Non capture positions

Win: 2.969 (3.5%)
Draw: 81.465 (96.5%)
Lose: 2 (0.0%)

All positions

Win: 24.373 (23.0%)
Draw: 81.465 (77.0%)
Lose: 2 (0.0%)

Native examples were selected after counting from 17081 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 1, Black 0.

W:W10,K14:BK46

MoveResult
14-9Draw
14-3Draw
14-19Loss
14-23Loss
14-28Loss
14-32Loss
14-37Loss
14-41Loss
14-20Draw
14-25Draw
10-4Draw
10-5Win

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 1, Black 0.

W:WK4,10:BK36

MoveResult
4-9Loss
4-13Loss
4-18Loss
4-22Loss
4-27Loss
4-31Loss
10-5Draw

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.

No qualifying example proved from the available WDL data.

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 1, Black 0.

B:WK5,10:BK36

MoveResult
36-31Draw
36-27Draw
36-22Draw
36-18Draw
36-13Draw
36-9Draw
36-4Win
36-41Draw
36-47Draw

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 1, Black 0.

B:WK1,10:BK50

MoveResult
50-44Draw
50-39Draw
50-33Draw
50-28Draw
50-22Draw
50-17Draw
50-11Draw
50-6Draw
50-45Draw

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 2, Black 0.

W:WK2,15:BK47

MoveResult
2-7Draw
2-11Draw
2-16Draw
2-8Draw
2-13Draw
2-19Draw
2-24Win
2-30Draw
2-35Draw
15-10Draw

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 0.

W:W10,K14:BK5

MoveResult
14-9Loss
14-3Draw
14-19Loss
14-23Loss
14-28Loss
14-32Loss
14-37Loss
14-41Loss
14-46Win
14-20Loss
14-25Draw
10-4Draw

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.