Non capture positions

Win: 33.973 (94.8%)
Draw: 1.879 (5.2%)
Lose: 0 (0.0%)

All positions

Win: 51.041 (96.4%)
Draw: 1.879 (3.6%)
Lose: 0 (0.0%)

Native examples were selected after counting from 17924 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:WK35,K37:B45

MoveResult
35-30Draw
35-24Draw
35-19Draw
35-13Draw
35-8Draw
35-2Draw
35-40Win
35-44Draw
35-49Draw
37-31Draw
37-26Draw
37-32Draw
37-28Draw
37-23Draw
37-19Draw
37-14Draw
37-10Draw
37-5Draw
37-41Draw
37-46Draw
37-42Draw
37-48Draw

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 1.

B:WK1,K7: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 0, Black 1.

B:WK1,K2:B45

MoveResult
45-50Draw

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:WK35,K37:B45

MoveResult
35-30Draw
35-24Draw
35-19Draw
35-13Draw
35-8Draw
35-2Draw
35-40Win
35-44Draw
35-49Draw
37-31Draw
37-26Draw
37-32Draw
37-28Draw
37-23Draw
37-19Draw
37-14Draw
37-10Draw
37-5Draw
37-41Draw
37-46Draw
37-42Draw
37-48Draw

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.