Non capture positions

Win: 43.719.979 (89.5%)
Draw: 5.106.126 (10.5%)
Lose: 0 (0.0%)

All positions

Win: 201.935.779 (87.8%)
Draw: 28.150.147 (12.2%)
Lose: 4.924 (0.0%)

Native examples were selected after counting from 3476 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 9.

W:WK1,K3,K7:B13,44,45

MoveResult
1-6Draw
3-8Draw
3-12Draw
3-17Draw
3-21Draw
3-26Draw
3-9Draw
3-14Draw
3-20Draw
3-25Draw
7-2Draw
7-11Draw
7-16Draw
7-12Draw
7-18Draw
7-23Draw
7-29Draw
7-34Draw
7-40Win

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 0, Black 6.

B:WK1,K15,K39:B31,40,45

MoveResult
31-37Loss
31-36Loss
40-44Loss
45-50Draw

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 0, Black 6.

W:WK13,K24,K25:B35,39,43

MoveResult
13-8Loss
13-2Draw
13-9Loss
13-4Draw
13-18Loss
13-22Draw
13-27Loss
13-31Loss
13-36Draw
13-19Draw
24-19Draw
24-20Loss
24-15Draw
24-29Loss
24-33Win
24-38Win
24-42Draw
24-47Draw
24-30Draw
25-20Draw
25-14Draw
25-9Draw
25-3Draw
25-30Loss
25-34Loss

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.

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White to move: Win. Pip count: White 0, Black 9.

W:WK1,K3,K7:B13,44,45

MoveResult
1-6Draw
3-8Draw
3-12Draw
3-17Draw
3-21Draw
3-26Draw
3-9Draw
3-14Draw
3-20Draw
3-25Draw
7-2Draw
7-11Draw
7-16Draw
7-12Draw
7-18Draw
7-23Draw
7-29Draw
7-34Draw
7-40Win

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.