Non capture positions

Win: 0 (0.0%)
Draw: 78.993 (0.0%)
Lose: 185.068.200 (100.0%)

All positions

Win: 3.545.054 (0.8%)
Draw: 102.110.326 (23.8%)
Lose: 323.393.520 (75.4%)

Native examples were selected after counting from 9188 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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White to move: Draw. Pip count: White 0, Black 1.

W:WK30:BK9,K21,K27,42,K47

MoveResult
30-24Loss
30-19Loss
30-13Loss
30-8Loss
30-2Loss
30-25Loss
30-34Loss
30-39Loss
30-43Loss
30-48Draw
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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White to move: Draw. Pip count: White 0, Black 1.

W:WK30:BK9,K21,K27,42,K47

MoveResult
30-24Loss
30-19Loss
30-13Loss
30-8Loss
30-2Loss
30-25Loss
30-34Loss
30-39Loss
30-43Loss
30-48Draw
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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Black to move: Win. Pip count: White 0, Black 1.

B:WK48:BK16,K18,K37,K38,42

MoveResult
16-11Win
16-7Win
16-2Win
16-21Win
16-27Win
16-32Win
18-12Win
18-7Win
18-1Win
18-13Win
18-9Win
18-4Win
18-22Win
18-27Win
18-31Win
18-36Win
18-23Win
18-29Win
18-34Win
18-40Win
18-45Win
37-31Draw
37-26Draw
37-32Draw
37-28Draw
37-23Draw
37-19Draw
37-14Draw
37-10Draw
37-5Draw
37-41Draw
37-46Draw
38-32Win
38-27Win
38-21Win
38-33Win
38-29Win
38-24Win
38-20Win
38-15Win
38-43Draw
38-49Win
42-47Draw

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.