Non capture positions

Win: 4.569 (0.0%)
Draw: 3.348.598 (26.8%)
Lose: 9.121.448 (73.1%)

All positions

Win: 23.331 (0.1%)
Draw: 4.370.072 (25.5%)
Lose: 12.729.637 (74.3%)

Native examples were selected after counting from 15389 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 3, Black 0.

B:W8,12:BK16,K25,K44

MoveResult
16-11Draw
16-7Draw
16-2Draw
16-21Draw
16-27Draw
16-32Draw
16-38Draw
16-43Draw
16-49Draw
25-20Draw
25-14Draw
25-9Draw
25-3Win
25-30Draw
25-34Draw
25-39Draw
25-43Draw
25-48Draw
44-39Draw
44-33Draw
44-28Draw
44-22Draw
44-17Draw
44-11Draw
44-6Draw
44-40Draw
44-35Draw
44-49Draw
44-50Draw

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 4, Black 0.

W:W6,16:BK41,K48,K50

MoveResult
6-1Draw
16-11Loss

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 4, Black 0.

W:W6,16:BK41,K48,K50

MoveResult
6-1Draw
16-11Loss

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 6, Black 0.

B:W6,26:BK16,K37,K43

MoveResult
16-11Win
16-7Draw
16-2Draw
16-21Draw
16-27Draw
16-32Draw
16-38Draw
37-31Draw
37-32Draw
37-28Draw
37-23Draw
37-19Draw
37-14Draw
37-10Draw
37-5Draw
37-41Draw
37-46Draw
37-42Draw
37-48Draw
43-38Draw
43-32Draw
43-27Draw
43-21Draw
43-39Draw
43-34Draw
43-30Draw
43-25Draw
43-48Draw
43-49Draw

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.