Non capture positions

Win: 17.373 (3.1%)
Draw: 537.278 (94.6%)
Lose: 13.271 (2.3%)

All positions

Win: 116.381 (17.5%)
Draw: 537.278 (80.6%)
Lose: 13.271 (2.0%)

Native examples were selected after counting from 16394 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 4, Black 0.

W:W6,10,14:BK32

MoveResult
10-4Draw
14-9Draw
6-1Draw
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 9, Black 0.

W:W15,20,25:BK38

MoveResult
15-10Loss
20-14Draw

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 16, Black 0.

W:W21,27,37:BK43

MoveResult
21-16Win
37-31Loss
21-17Loss
27-22Draw
37-32Loss

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 16, Black 0.

B:W16,21,48:BK44

MoveResult
44-39Draw
44-33Draw
44-28Win
44-22Win
44-17Loss
44-11Loss
44-6Win
44-40Draw
44-35Draw
44-49Draw
44-50Win

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 10, Black 0.

B:W6,7,42:BK49

MoveResult
49-43Draw
49-38Loss
49-32Draw
49-27Draw
49-21Draw
49-16Draw
49-44Draw
49-40Draw
49-35Draw

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 10, Black 0.

W:W6,17,32:BK36

MoveResult
17-11Draw
32-27Win
6-1Draw
17-12Draw
32-28Draw

Promotion trap

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

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White to move: Win. Pip count: White 8, Black 0.

W:W6,17,22:BK33

MoveResult
17-11Win
6-1Draw
17-12Draw
22-18Win

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.