Non capture positions

Win: 5.568.878 (94.8%)
Draw: 304.486 (5.2%)
Lose: 0 (0.0%)

All positions

Win: 16.163.471 (94.4%)
Draw: 959.562 (5.6%)
Lose: 7 (0.0%)

Native examples were selected after counting from 6203 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 2.

W:WK12,K23,K27:B44,45

MoveResult
12-7Draw
12-1Draw
12-8Draw
12-3Draw
12-17Draw
12-21Draw
12-26Draw
12-18Draw
23-18Draw
23-19Draw
23-14Draw
23-10Draw
23-5Draw
23-28Draw
23-32Draw
23-37Draw
23-41Draw
23-46Draw
23-29Draw
23-34Draw
23-40Win
27-21Draw
27-16Draw
27-22Draw
27-18Draw
27-13Draw
27-9Draw
27-4Draw
27-31Draw
27-36Draw
27-32Draw
27-38Draw
27-43Draw
27-49Draw

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 2.

B:WK25,K34,K50:B42,45

MoveResult
42-48Loss
42-47Draw

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 2.

B:WK1,K37,K42:B44,45

MoveResult
44-50Loss
44-49Draw
45-50Draw

Unique winning sacrifice

Exactly one of at least two moves wins; every compulsory reply captures the piece offered by that move.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 0, Black 2.

W:WK12,K23,K27:B44,45

MoveResult
12-7Draw
12-1Draw
12-8Draw
12-3Draw
12-17Draw
12-21Draw
12-26Draw
12-18Draw
23-18Draw
23-19Draw
23-14Draw
23-10Draw
23-5Draw
23-28Draw
23-32Draw
23-37Draw
23-41Draw
23-46Draw
23-29Draw
23-34Draw
23-40Win
27-21Draw
27-16Draw
27-22Draw
27-18Draw
27-13Draw
27-9Draw
27-4Draw
27-31Draw
27-36Draw
27-32Draw
27-38Draw
27-43Draw
27-49Draw

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.