Non capture positions

Win: 1.102.432 (1.4%)
Draw: 80.327.686 (98.6%)
Lose: 32 (0.0%)

All positions

Win: 19.149.632 (6.0%)
Draw: 298.042.698 (93.8%)
Lose: 621.670 (0.2%)

Native examples were selected after counting from 3934 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 0.

W:WK4,K18,K46:BK30,K38,K50

MoveResult
4-9Draw
4-13Draw
4-10Draw
4-15Draw
18-12Draw
18-7Draw
18-1Draw
18-13Draw
18-9Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
18-34Draw
18-40Draw
18-45Draw
46-41Draw
46-37Draw
46-32Draw
46-28Win
46-23Draw
46-19Draw
46-14Draw
46-10Draw
46-5Draw

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.

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.

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 0.

W:WK4,K18,K46:BK30,K38,K50

MoveResult
4-9Draw
4-13Draw
4-10Draw
4-15Draw
18-12Draw
18-7Draw
18-1Draw
18-13Draw
18-9Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
18-34Draw
18-40Draw
18-45Draw
46-41Draw
46-37Draw
46-32Draw
46-28Win
46-23Draw
46-19Draw
46-14Draw
46-10Draw
46-5Draw

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.