Non capture positions

Win: 0 (0.0%)
Draw: 1.426.390 (98.7%)
Lose: 19.115 (1.3%)

All positions

Win: 122.349 (4.9%)
Draw: 2.302.813 (92.6%)
Lose: 62.078 (2.5%)

Native examples were selected after counting from 10752 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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Black to move: Win. Pip count: White 0, Black 1.

B:WK36:BK4,42,K47

MoveResult
4-9Draw
4-13Draw
4-18Draw
4-22Draw
4-27Draw
4-31Draw
4-10Draw
4-15Draw
47-41Draw
42-48Win

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:BK41,45,K48

MoveResult
1-6Draw
1-7Loss
1-12Loss
1-18Loss
1-23Loss
1-29Loss
1-34Loss
1-40Loss

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.

No qualifying example proved from the available WDL data.

Draw with fewer pieces

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

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

W:WK26:B45,K48,K50

MoveResult
26-21Draw
26-17Loss
26-12Loss
26-8Draw
26-3Draw
26-31Loss
26-37Loss
26-42Loss

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

B:WK18:BK25,45,K49

MoveResult
25-20Draw
25-14Draw
25-9Draw
25-3Draw
25-30Draw
25-34Win
25-39Draw
25-43Draw
25-48Draw
49-43Draw
49-38Draw
49-32Draw
49-27Draw
49-21Draw
49-16Draw
49-44Draw
49-40Draw
49-35Draw
45-50Draw

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:WK1:BK40,45,K49

MoveResult
40-34Win
40-29Draw
40-23Draw
40-18Draw
40-12Draw
40-7Draw
40-35Draw
40-44Draw
49-43Win
49-38Win
49-32Win
49-27Win
49-21Win
49-16Win
49-44Win
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.