Non capture positions

Win: 380.834.496 (100.0%)
Draw: 0 (0.0%)
Lose: 0 (0.0%)

All positions

Win: 693.839.850 (100.0%)
Draw: 0 (0.0%)
Lose: 0 (0.0%)

Native examples were selected after counting from 8963 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.

No qualifying example proved from the available WDL data.

Only move to draw

At least two legal moves; exactly one draws and every alternative loses.

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Black to move: Draw. Pip count: White 8, Black 1.

B:W10,K12,K13,K29,38:B44

MoveResult
44-50Loss
44-49Draw

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.

No qualifying example proved from the available WDL data.

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 8, Black 1.

B:W10,K12,K13,K29,38:B44

MoveResult
44-50Loss
44-49Draw

Unique winning sacrifice

Exactly one of at least two moves wins; every compulsory reply captures the piece offered by that move.

No qualifying example proved from the available WDL data.

Promotion trap

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

No qualifying example proved from the available WDL data.

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 9.

W:WK1,K23,K24,46,47:B5

MoveResult
1-6Win
1-7Win
1-12Win
1-18Win
23-18Win
23-12Win
23-7Win
23-19Win
23-14Win
23-10Win
23-28Win
23-32Win
23-37Win
23-41Win
23-29Win
23-34Win
23-40Win
23-45Win
24-19Win
24-13Win
24-8Win
24-2Win
24-20Win
24-15Win
24-29Win
24-33Win
24-38Win
24-42Win
24-30Win
24-35Win
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.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Loss. Pip count: White 18, Black 9.

B:WK1,K23,K24,46,47:B5

MoveResult
5-10Loss