Non capture positions

Win: 33.333.880 (97.3%)
Draw: 928.409 (2.7%)
Lose: 3 (0.0%)

All positions

Win: 50.440.708 (98.2%)
Draw: 928.409 (1.8%)
Lose: 3 (0.0%)

Native examples were selected after counting from 11290 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.

No qualifying example proved from the available WDL data.

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 3, Black 0.

B:W6,11,K14,K33:BK30

MoveResult
30-24Loss
30-19Loss
30-13Loss
30-8Loss
30-2Draw
30-25Loss
30-34Loss
30-39Loss
30-43Loss
30-48Loss
30-35Loss

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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Black to move: Draw. Pip count: White 3, Black 0.

B:W6,11,K14,K33:BK30

MoveResult
30-24Loss
30-19Loss
30-13Loss
30-8Loss
30-2Draw
30-25Loss
30-34Loss
30-39Loss
30-43Loss
30-48Loss
30-35Loss

Unique winning sacrifice

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

No qualifying example proved from the available WDL data.

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 0.

W:W7,12,K14,K16:BK34

MoveResult
14-9Win
14-3Win
14-10Win
14-5Win
14-19Win
14-23Win
14-28Win
14-32Win
14-37Win
14-41Win
14-46Win
14-20Win
14-25Win
16-11Win
16-21Win
16-27Win
16-32Win
16-38Win
16-43Draw
16-49Win
7-1Win
7-2Draw
12-8Draw

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.