Non capture positions

Win: 134.804 (23.7%)
Draw: 434.756 (76.3%)
Lose: 0 (0.0%)

All positions

Win: 486.444 (52.8%)
Draw: 434.756 (47.2%)
Lose: 0 (0.0%)

Native examples were selected after counting from 11535 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:WK2,K10,K45:BK50

MoveResult
2-7Draw
2-11Draw
2-16Draw
2-8Draw
2-13Draw
2-19Draw
2-24Draw
2-30Draw
2-35Draw
10-4Draw
10-5Draw
10-14Draw
10-19Draw
10-23Win
10-28Draw
10-32Draw
10-37Draw
10-41Draw
10-46Draw
10-15Draw
45-40Draw
45-34Draw
45-29Draw
45-23Draw
45-18Draw
45-12Draw
45-7Draw
45-1Draw

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 0, Black 0.

B:WK2,K4,K6:BK50

MoveResult
50-44Loss
50-39Loss
50-33Loss
50-28Loss
50-22Loss
50-17Loss
50-11Loss
50-45Draw

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 0, Black 0.

B:WK1,K36,K43:BK50

MoveResult
50-44Draw
50-39Loss
50-33Draw
50-28Draw
50-22Loss
50-17Draw
50-11Draw
50-6Draw
50-45Loss

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:WK3,K12,K14:BK50

MoveResult
3-8Draw
3-9Draw
12-7Draw
12-1Draw
12-8Draw
12-17Draw
12-21Draw
12-26Draw
12-18Draw
12-23Draw
12-29Draw
12-34Draw
12-40Draw
12-45Draw
14-9Draw
14-10Draw
14-5Draw
14-19Draw
14-23Draw
14-28Win
14-32Draw
14-37Draw
14-41Draw
14-46Draw
14-20Draw
14-25Draw

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.