Non capture positions

Win: 44.320.225 (5.4%)
Draw: 773.081.052 (94.5%)
Lose: 380.608 (0.0%)

All positions

Win: 379.554.810 (20.3%)
Draw: 1.461.444.500 (78.1%)
Lose: 29.121.490 (1.6%)

Native examples were selected after counting from 8938 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 18, Black 18.

W:WK26,46,48:B4,5,K14

MoveResult
26-21Draw
26-17Draw
26-12Draw
26-8Draw
26-3Draw
26-31Draw
26-37Win
26-42Draw
48-42Draw
46-41Draw
48-43Draw

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 13.

W:WK35,41,44:B11,K13,19

MoveResult
35-30Loss
35-24Loss
35-40Draw
41-36Loss
44-39Loss
41-37Loss
44-40Loss

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 15, Black 6.

W:WK5,31,50:B21,45,K46

MoveResult
5-10Loss
5-14Loss
5-19Loss
5-23Loss
5-28Loss
5-32Loss
5-37Loss
5-41Loss
31-26Loss
50-44Loss
31-27Loss

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 16, Black 9.

W:WK5,38,50:B7,K37,41

MoveResult
5-10Loss
5-14Loss
5-19Loss
5-23Loss
5-28Loss
5-32Loss
38-32Win
50-44Loss
38-33Loss
50-45Loss

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.

No qualifying example proved from the available WDL data.

Unique winning sacrifice

Exactly one of at least two moves wins; every compulsory reply captures the piece offered by that move.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 18, Black 18.

W:WK26,46,48:B4,5,K14

MoveResult
26-21Draw
26-17Draw
26-12Draw
26-8Draw
26-3Draw
26-31Draw
26-37Win
26-42Draw
48-42Draw
46-41Draw
48-43Draw

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 7.

W:WK8,9,14:B22,38,K48

MoveResult
8-2Draw
8-3Draw
8-12Draw
8-17Draw
8-21Draw
8-26Draw
8-13Draw
8-19Draw
8-24Draw
8-30Win
8-35Draw
9-3Draw
9-4Draw
14-10Draw

Both sides at highest pip count: win

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 18, Black 18.

W:WK26,46,48:B4,5,K14

MoveResult
26-21Draw
26-17Draw
26-12Draw
26-8Draw
26-3Draw
26-31Draw
26-37Win
26-42Draw
48-42Draw
46-41Draw
48-43Draw

Both sides at highest pip count: loss

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

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White to move: Loss. Pip count: White 18, Black 18.

W:WK4,48,50:B3,5,K36

MoveResult
4-9Loss
4-13Loss
4-18Loss
4-22Loss
4-27Loss
4-31Loss
4-10Loss
4-15Loss
48-42Loss
50-44Loss
48-43Loss
50-45Loss