Non capture positions

Win: 81.329 (6.7%)
Draw: 1.138.856 (93.3%)
Lose: 3 (0.0%)

All positions

Win: 791.742 (31.8%)
Draw: 1.692.074 (68.0%)
Lose: 3.424 (0.1%)

Native examples were selected after counting from 8914 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 1.

W:WK25,K34:BK42,45

MoveResult
25-20Draw
25-14Draw
25-9Draw
25-3Draw
25-30Draw
34-29Draw
34-23Draw
34-18Draw
34-12Draw
34-7Draw
34-1Draw
34-30Draw
34-39Draw
34-43Draw
34-48Draw
34-40Win

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 0, Black 2.

B:WK1,K7:B40,K45

MoveResult
45-50Draw
40-44Loss

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 2.

W:WK9,K19:B37,K41

MoveResult
9-3Draw
9-4Draw
9-13Loss
9-18Loss
9-22Loss
9-27Loss
9-31Win
9-36Draw
9-14Loss
9-20Loss
9-25Draw
19-13Draw
19-8Draw
19-2Draw
19-14Loss
19-10Loss
19-5Loss
19-23Loss
19-28Loss
19-32Draw
19-24Draw
19-30Draw
19-35Draw

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.

No qualifying example proved from the available WDL data.

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 0, Black 1.

W:WK25,K34:BK42,45

MoveResult
25-20Draw
25-14Draw
25-9Draw
25-3Draw
25-30Draw
34-29Draw
34-23Draw
34-18Draw
34-12Draw
34-7Draw
34-1Draw
34-30Draw
34-39Draw
34-43Draw
34-48Draw
34-40Win

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.

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.