Non capture positions

Win: 13.696.756 (6.6%)
Draw: 193.362.214 (93.4%)
Lose: 7 (0.0%)

All positions

Win: 142.529.328 (16.6%)
Draw: 714.496.786 (83.3%)
Lose: 1.071.686 (0.1%)

Native examples were selected after counting from 3830 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 1.

W:WK7,K15,K24:BK27,K28,44

MoveResult
7-1Draw
7-2Draw
7-11Draw
7-16Draw
7-12Draw
7-18Draw
7-23Draw
7-29Draw
7-34Draw
7-40Win
7-45Draw
15-10Draw
15-4Draw
15-20Draw
24-19Draw
24-13Draw
24-8Draw
24-2Draw
24-20Draw
24-29Draw
24-33Draw
24-38Draw
24-42Draw
24-47Draw
24-30Draw
24-35Draw

Only move to draw

At least two legal moves; exactly one draws and every alternative loses.

No qualifying example proved from the available WDL data.

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:WK41,K42,K50:BK17,18,K22

MoveResult
41-36Draw
41-37Draw
41-32Loss
41-28Draw
41-23Draw
41-19Draw
41-14Draw
41-10Draw
41-5Draw
41-46Draw
41-47Draw
42-37Draw
42-31Draw
42-26Draw
42-38Loss
42-33Win
42-29Draw
42-24Draw
42-20Draw
42-15Draw
42-47Draw
42-48Draw
50-44Draw
50-39Draw
50-33Draw
50-28Loss
50-45Draw

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 1.

W:WK7,K15,K24:BK27,K28,44

MoveResult
7-1Draw
7-2Draw
7-11Draw
7-16Draw
7-12Draw
7-18Draw
7-23Draw
7-29Draw
7-34Draw
7-40Win
7-45Draw
15-10Draw
15-4Draw
15-20Draw
24-19Draw
24-13Draw
24-8Draw
24-2Draw
24-20Draw
24-29Draw
24-33Draw
24-38Draw
24-42Draw
24-47Draw
24-30Draw
24-35Draw

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.