Non capture positions

Win: 780.249 (0.8%)
Draw: 76.478.438 (74.8%)
Lose: 25.050.582 (24.5%)

All positions

Win: 15.034.946 (9.7%)
Draw: 109.426.057 (71.0%)
Lose: 29.748.822 (19.3%)

Native examples were selected after counting from 13442 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 8, Black 0.

W:W6,10,14,21:BK29,K37

MoveResult
10-4Draw
14-9Draw
21-16Draw
6-1Draw
10-5Win
21-17Draw

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 16, Black 0.

W:W6,11,26,41:BK15,K45

MoveResult
41-36Loss
6-1Loss
11-7Loss
26-21Draw
41-37Loss

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 17, Black 0.

W:W7,12,26,47:BK23,K34

MoveResult
7-1Win
47-41Draw
7-2Draw
12-8Draw
26-21Draw
47-42Loss

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 11, Black 0.

B:W6,11,17,26:BK1,K50

MoveResult
1-7Loss
1-12Loss
1-18Draw
1-23Draw
1-29Draw
1-34Draw
1-40Draw
1-45Draw
50-44Win
50-39Win
50-33Win
50-28Win
50-22Loss
50-45Draw

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 23, Black 0.

B:W6,35,36,49:BK1,K13

MoveResult
1-7Draw
1-12Draw
1-18Draw
1-23Draw
1-29Draw
1-34Draw
1-40Loss
1-45Draw
13-8Draw
13-2Draw
13-9Draw
13-4Draw
13-18Draw
13-22Draw
13-27Draw
13-31Loss
13-19Draw
13-24Draw
13-30Loss

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 13, Black 0.

W:W8,9,13,46:BK43,K47

MoveResult
8-2Draw
9-3Draw
8-3Draw
9-4Draw
46-41Win

Promotion trap

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

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White to move: Win. Pip count: White 13, Black 0.

W:W8,9,13,46:BK43,K47

MoveResult
8-2Draw
9-3Draw
8-3Draw
9-4Draw
46-41Win

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.