Non capture positions

Win: 2.222.661.901 (81.3%)
Draw: 511.643.243 (18.7%)
Lose: 36.832 (0.0%)

All positions

Win: 6.332.730.034 (86.2%)
Draw: 1.009.679.885 (13.7%)
Lose: 5.229.281 (0.1%)

Native examples were selected after counting from 7379 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 10, Black 10.

W:WK5,6,21,26:B20,34,43

MoveResult
5-10Draw
5-14Draw
5-19Draw
5-23Draw
5-28Win
5-32Draw
5-37Draw
5-41Draw
5-46Draw
21-16Draw
6-1Draw
21-17Draw

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 27, Black 27.

B:WK36,46,47,48:B3,4,5

MoveResult
3-9Draw
4-10Loss
3-8Loss
4-9Loss
5-10Loss

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 20.

W:W12,K32,34,48:B11,13,16

MoveResult
32-27Win
32-21Draw
32-28Win
32-23Win
32-19Win
32-14Win
32-10Win
32-5Win
32-37Win
32-41Win
32-46Win
32-38Win
32-43Win
32-49Win
12-7Win
34-29Win
48-42Loss
12-8Win
34-30Draw
48-43Loss

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 4, Black 19.

B:WK1,6,7,11:B2,5,45

MoveResult
2-8Loss
5-10Win
45-50Win

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 27, Black 27.

B:WK14,46,47,48:B3,4,5

MoveResult
3-9Loss
4-10Draw
3-8Loss
4-9Draw
5-10Loss

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 16, Black 16.

W:W15,K23,32,41:B9,13,42

MoveResult
23-18Draw
23-12Draw
23-7Draw
23-1Draw
23-19Draw
23-14Loss
23-10Draw
23-5Draw
23-28Draw
23-29Draw
23-34Draw
23-40Draw
23-45Draw
15-10Draw
32-27Draw
41-36Draw
32-28Draw
41-37Win

Promotion trap

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

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White to move: Win. Pip count: White 10, Black 10.

W:WK5,6,21,26:B20,34,43

MoveResult
5-10Draw
5-14Draw
5-19Draw
5-23Draw
5-28Win
5-32Draw
5-37Draw
5-41Draw
5-46Draw
21-16Draw
6-1Draw
21-17Draw

Both sides at highest pip count: win

Both sides attain their maximum pip count; the player to move wins.

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White to move: Win. Pip count: White 27, Black 27.

W:WK1,46,47,48:B3,4,5

MoveResult
1-6Win
1-7Win
1-12Win
1-18Win
1-23Win
1-29Win
1-34Win
1-40Win
1-45Win
47-41Win
48-42Win
46-41Win
47-42Win
48-43Win

Both sides at highest pip count: loss

Both sides attain their maximum pip count; the player to move loses.

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Black to move: Loss. Pip count: White 27, Black 27.

B:WK1,46,47,48:B3,4,5

MoveResult
3-9Loss
4-10Loss
3-8Loss
4-9Loss
5-10Loss