Non capture positions

Win: 257.206 (15.0%)
Draw: 1.452.834 (85.0%)
Lose: 0 (0.0%)

All positions

Win: 1.034.406 (41.6%)
Draw: 1.452.834 (58.4%)
Lose: 0 (0.0%)

Native examples were selected after counting from 12460 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 1, Black 0.

W:W6,K25,K45:BK48

MoveResult
25-20Draw
25-14Draw
25-9Draw
25-3Draw
25-30Draw
25-34Draw
25-39Draw
25-43Draw
45-40Draw
45-34Win
45-29Draw
45-23Draw
45-18Draw
45-12Draw
45-7Draw
45-1Draw
45-50Draw
6-1Draw

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 1, Black 0.

B:WK2,6,K18:BK35

MoveResult
35-30Loss
35-24Loss
35-19Loss
35-13Loss
35-8Loss
35-40Loss
35-44Loss
35-49Draw

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 1, Black 0.

B:W6,K40,K48:BK50

MoveResult
50-44Loss
50-39Loss
50-33Draw
50-28Draw
50-22Draw
50-17Loss
50-11Loss
50-45Loss

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 1, Black 0.

W:W6,K25,K45:BK48

MoveResult
25-20Draw
25-14Draw
25-9Draw
25-3Draw
25-30Draw
25-34Draw
25-39Draw
25-43Draw
45-40Draw
45-34Win
45-29Draw
45-23Draw
45-18Draw
45-12Draw
45-7Draw
45-1Draw
45-50Draw
6-1Draw

Promotion trap

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

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White to move: Win. Pip count: White 1, Black 0.

W:W6,K40,K48:BK50

MoveResult
40-34Draw
40-29Draw
40-23Draw
40-18Draw
40-12Win
40-7Draw
40-1Draw
40-35Draw
40-44Draw
40-49Draw
40-45Draw
48-42Draw
48-37Draw
48-31Draw
48-26Win
48-43Draw
48-39Draw
48-34Win
48-30Draw
48-25Draw
6-1Draw

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.