Non capture positions

Win: 725.666.884 (80.9%)
Draw: 171.063.983 (19.1%)
Lose: 213 (0.0%)

All positions

Win: 1.747.044.405 (83.9%)
Draw: 330.126.359 (15.9%)
Lose: 4.348.786 (0.2%)

Native examples were selected after counting from 6746 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 3, Black 1.

W:W6,12,K13,K44:BK5,45

MoveResult
13-8Draw
13-2Draw
13-9Draw
13-4Draw
13-18Draw
13-22Draw
13-27Draw
13-31Draw
13-36Draw
13-19Draw
13-24Draw
13-30Draw
13-35Draw
44-39Draw
44-33Draw
44-28Draw
44-22Draw
44-17Draw
44-11Draw
44-40Draw
44-35Draw
44-49Draw
44-50Win
12-7Draw
6-1Draw
12-8Draw

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 18, Black 9.

B:WK22,K31,46,47:B5,K43

MoveResult
43-38Loss
43-32Loss
43-27Draw
43-21Loss
43-16Loss
43-39Loss
43-34Loss
43-30Loss
43-25Loss
43-48Loss
43-49Loss
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 12, Black 1.

W:WK11,K16,31,35:BK38,43

MoveResult
11-6Draw
11-7Loss
11-2Draw
11-17Loss
11-22Loss
11-28Loss
11-33Draw
11-39Win
11-44Draw
11-50Draw
16-21Loss
16-27Loss
16-32Loss
31-26Loss
35-30Loss
31-27Win

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 3, Black 9.

B:WK1,K6,7,11:B2,K50

MoveResult
50-44Win
50-39Win
50-33Win
50-28Win
50-22Win
50-17Loss
50-45Win
2-8Loss

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 18, Black 9.

B:WK22,K31,46,47:B5,K43

MoveResult
43-38Loss
43-32Loss
43-27Draw
43-21Loss
43-16Loss
43-39Loss
43-34Loss
43-30Loss
43-25Loss
43-48Loss
43-49Loss
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 8, Black 1.

W:WK6,15,33,K48:BK5,45

MoveResult
6-1Draw
6-11Draw
6-17Draw
6-22Draw
6-28Draw
48-42Draw
48-37Draw
48-31Draw
48-26Draw
48-43Draw
48-39Draw
48-34Draw
48-30Draw
48-25Draw
15-10Win
33-28Draw
33-29Draw

Promotion trap

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

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White to move: Win. Pip count: White 3, Black 1.

W:W6,12,K13,K44:BK5,45

MoveResult
13-8Draw
13-2Draw
13-9Draw
13-4Draw
13-18Draw
13-22Draw
13-27Draw
13-31Draw
13-36Draw
13-19Draw
13-24Draw
13-30Draw
13-35Draw
44-39Draw
44-33Draw
44-28Draw
44-22Draw
44-17Draw
44-11Draw
44-40Draw
44-35Draw
44-49Draw
44-50Win
12-7Draw
6-1Draw
12-8Draw

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 18, Black 9.

W:WK9,K11,46,47:B5,K49

MoveResult
9-3Win
9-4Win
9-13Win
9-18Win
9-22Win
9-27Loss
9-31Win
9-36Win
9-14Win
9-20Win
9-25Win
11-6Win
11-7Win
11-2Win
11-16Win
11-17Win
11-22Win
11-28Win
11-33Win
11-39Win
11-44Draw
11-50Win
47-41Win
46-41Win
47-42Win

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 18, Black 9.

B:WK9,K11,46,47:B5,K49

MoveResult
49-43Loss
49-38Loss
49-32Loss
49-27Loss
49-21Loss
49-16Loss
49-44Loss
49-40Loss
49-35Loss
5-10Loss