Non capture positions

Win: 270.761.658 (95.4%)
Draw: 12.916.370 (4.6%)
Lose: 705 (0.0%)

All positions

Win: 542.285.137 (97.1%)
Draw: 16.440.746 (2.9%)
Lose: 24.717 (0.0%)

Native examples were selected after counting from 8338 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 9, Black 2.

W:W7,11,K28,32:B43,45

MoveResult
28-22Draw
28-17Draw
28-23Draw
28-19Draw
28-14Draw
28-10Draw
28-5Draw
28-33Draw
28-39Draw
28-44Draw
28-50Win
7-1Draw
11-6Draw
32-27Draw
7-2Draw

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 9, Black 2.

B:W7,11,K28,32:B43,45

MoveResult
43-49Loss
43-48Loss
45-50Draw

Mutual zugzwang

On this same board, White to move loses and Black to move loses.

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White to move: Loss. Pip count: White 9, Black 14.

W:WK5,10,15,33:B4,23

MoveResult
33-28Loss
33-29Loss

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 14, Black 3.

W:W17,26,K27,32:B38,43

MoveResult
27-21Draw
27-16Win
27-22Draw
27-18Draw
27-13Draw
27-9Draw
27-4Draw
27-31Draw
27-36Draw
17-11Loss
17-12Loss
26-21Draw
32-28Draw

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 17, Black 3.

B:W18,30,K35,48:B40,44

MoveResult
40-45Loss
44-50Loss
44-49Win

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 12, Black 2.

B:W6,30,K31,34:B44,45

MoveResult
44-50Draw
44-49Draw
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 20, Black 8.

W:W22,42,K43,44:B15,45

MoveResult
43-38Draw
43-32Draw
43-27Draw
43-21Draw
43-16Draw
43-39Draw
43-34Draw
43-30Draw
43-25Draw
43-48Draw
43-49Draw
22-17Draw
42-37Draw
44-39Draw
22-18Draw
42-38Draw
44-40Win

Promotion trap

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

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White to move: Win. Pip count: White 9, Black 2.

W:W8,17,K21,28:B44,45

MoveResult
21-16Draw
21-26Draw
21-27Draw
21-32Draw
21-38Draw
21-43Draw
21-49Draw
8-2Win
17-11Win
28-22Draw
8-3Draw
17-12Draw
28-23Draw

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 18.

W:WK1,46,47,48:B4,5

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 18.

B:WK1,46,47,48:B4,5

MoveResult
4-10Loss
4-9Loss
5-10Loss