Non capture positions

Win: 74.687 (0.0%)
Draw: 49.985.110 (27.0%)
Lose: 135.244.212 (73.0%)

All positions

Win: 3.108.103 (0.7%)
Draw: 255.316.737 (59.5%)
Lose: 170.624.060 (39.8%)

Native examples were selected after counting from 8979 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 2, Black 0.

W:WK7,11:BK10,K16,K21,K24

MoveResult
7-1Loss
7-2Win
7-12Loss
7-18Loss
7-23Loss
7-29Loss
7-34Loss
7-40Loss
7-45Loss
11-6Loss

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 1, Black 0.

W:WK2,8:BK10,K30,K46,K50

MoveResult
2-7Loss
2-11Loss
2-16Loss
8-3Draw

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 2, Black 0.

W:WK7,11:BK10,K16,K21,K24

MoveResult
7-1Loss
7-2Win
7-12Loss
7-18Loss
7-23Loss
7-29Loss
7-34Loss
7-40Loss
7-45Loss
11-6Loss

Win with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 2, Black 0.

W:WK7,11:BK10,K16,K21,K24

MoveResult
7-1Loss
7-2Win
7-12Loss
7-18Loss
7-23Loss
7-29Loss
7-34Loss
7-40Loss
7-45Loss
11-6Loss

Draw with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

W:W8,K10:BK29,K48,K49,K50

MoveResult
10-4Draw
10-5Draw
10-14Loss
10-19Loss
10-23Loss
10-28Loss
10-32Loss
10-37Loss
10-41Loss
10-46Draw
10-15Loss
8-2Loss
8-3Loss

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 0.

W:W44,K50:BK11,K27,K41,K42

MoveResult
50-45Loss
44-39Win
44-40Loss

Promotion trap

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

No qualifying example proved from the available WDL data.

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.