Non capture positions

Win: 28 (0.0%)
Draw: 1.355.821 (0.5%)
Lose: 285.888.587 (99.5%)

All positions

Win: 18.774.372 (2.7%)
Draw: 175.928.275 (25.5%)
Lose: 495.569.903 (71.8%)

Native examples were selected after counting from 8597 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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White to move: Draw. Pip count: White 0, Black 15.

W:WK38:B8,K14,18,44,K50

MoveResult
38-32Loss
38-27Draw
38-21Loss
38-16Loss
38-33Loss
38-29Loss
38-24Loss
38-20Loss
38-15Loss
38-42Loss
38-47Loss
38-43Loss
38-49Loss

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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White to move: Draw. Pip count: White 0, Black 15.

W:WK38:B8,K14,18,44,K50

MoveResult
38-32Loss
38-27Draw
38-21Loss
38-16Loss
38-33Loss
38-29Loss
38-24Loss
38-20Loss
38-15Loss
38-42Loss
38-47Loss
38-43Loss
38-49Loss

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.

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Black to move: Win. Pip count: White 0, Black 3.

B:WK35:BK40,K41,43,44,45

MoveResult
40-34Draw
40-29Draw
40-23Win
40-18Draw
40-12Draw
40-7Draw
40-1Draw
41-36Win
41-37Win
41-32Win
41-28Win
41-23Win
41-19Win
41-14Win
41-10Win
41-5Win
41-46Win
41-47Win
43-49Win
44-50Draw
43-48Win
44-49Win
45-50Win

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.