Non capture positions

Win: 1.220.006 (0.5%)
Draw: 227.382.860 (97.0%)
Lose: 5.739.557 (2.4%)

All positions

Win: 30.358.623 (3.5%)
Draw: 810.090.191 (94.4%)
Lose: 17.648.986 (2.1%)

Native examples were selected after counting from 6343 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 0, Black 1.

W:WK35,K40:BK21,K32,43,K49

MoveResult
35-30Loss
35-24Loss
35-19Loss
35-13Loss
35-8Loss
35-2Loss
40-34Draw
40-29Draw
40-23Loss
40-18Draw
40-12Loss
40-7Draw
40-1Draw
40-44Win
40-45Draw

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 0, Black 1.

W:WK1,K5:BK41,K44,45,K46

MoveResult
1-6Loss
1-7Loss
1-12Loss
1-18Loss
1-23Draw
1-29Loss
1-34Loss
1-40Loss
5-10Loss
5-14Loss
5-19Loss
5-23Loss
5-28Loss
5-32Loss
5-37Loss

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.

No qualifying example proved from the available WDL data.

Win with fewer pieces

The player to move has fewer pieces and a proven win.

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White to move: Win. Pip count: White 0, Black 1.

W:WK35,K40:BK21,K32,43,K49

MoveResult
35-30Loss
35-24Loss
35-19Loss
35-13Loss
35-8Loss
35-2Loss
40-34Draw
40-29Draw
40-23Loss
40-18Draw
40-12Loss
40-7Draw
40-1Draw
40-44Win
40-45Draw

Draw with fewer pieces

The player to move has fewer pieces and a proven draw.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Draw. Pip count: White 0, Black 1.

W:WK2,K26:BK39,45,K49,K50

MoveResult
2-7Loss
2-11Loss
2-16Draw
2-8Loss
2-13Loss
2-19Loss
2-24Loss
2-30Loss
2-35Draw
26-21Loss
26-17Loss
26-12Draw
26-8Draw
26-3Draw
26-31Draw
26-37Draw
26-42Draw
26-48Draw

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 0, Black 1.

W:WK35,K40:BK21,K32,43,K49

MoveResult
35-30Loss
35-24Loss
35-19Loss
35-13Loss
35-8Loss
35-2Loss
40-34Draw
40-29Draw
40-23Loss
40-18Draw
40-12Loss
40-7Draw
40-1Draw
40-44Win
40-45Draw

Promotion trap

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

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Black to move: Win. Pip count: White 0, Black 1.

B:WK31,K46:BK5,K34,45,K49

MoveResult
5-10Draw
5-14Draw
5-19Draw
5-23Draw
5-28Draw
5-32Draw
5-37Draw
5-41Draw
34-29Draw
34-23Win
34-18Draw
34-12Draw
34-7Win
34-1Draw
34-30Draw
34-25Draw
34-39Draw
34-43Draw
34-48Win
34-40Draw
49-43Draw
49-38Draw
49-32Draw
49-27Win
49-21Draw
49-16Draw
49-44Draw
49-40Draw
49-35Win
45-50Draw

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.