Non capture positions

Win: 143.850.456 (77.1%)
Draw: 42.613.174 (22.9%)
Lose: 49 (0.0%)

All positions

Win: 497.023.957 (79.9%)
Draw: 124.562.417 (20.0%)
Lose: 148.476 (0.0%)

Native examples were selected after counting from 4772 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 9, Black 5.

W:WK18,K34,47:B35,44,45

MoveResult
18-12Draw
18-7Draw
18-1Draw
18-13Draw
18-9Draw
18-4Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
34-29Draw
34-23Draw
34-30Draw
34-25Draw
34-39Draw
34-43Draw
34-48Draw
34-40Win
47-41Draw
47-42Draw

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 9, Black 7.

B:WK14,K24,50:B27,39,45

MoveResult
27-32Loss
39-44Draw
27-31Loss
39-43Loss

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 9, Black 5.

W:WK18,K34,47:B35,44,45

MoveResult
18-12Draw
18-7Draw
18-1Draw
18-13Draw
18-9Draw
18-4Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
34-29Draw
34-23Draw
34-30Draw
34-25Draw
34-39Draw
34-43Draw
34-48Draw
34-40Win
47-41Draw
47-42Draw

Promotion trap

A promotion draws or loses, while a non-promoting move wins.

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White to move: Win. Pip count: White 1, Black 11.

W:W8,K17,K32:B20,26,45

MoveResult
17-11Draw
17-6Draw
17-12Draw
17-21Draw
17-22Draw
17-28Draw
17-33Draw
17-39Draw
17-44Draw
17-50Win
32-27Draw
32-21Draw
32-16Draw
32-28Draw
32-23Draw
32-19Draw
32-14Draw
32-10Draw
32-5Draw
32-37Draw
32-41Draw
32-46Draw
32-38Draw
32-43Draw
32-49Draw
8-2Draw
8-3Draw

Both sides at highest pip count: win

Both sides attain their maximum pip count; the player to move wins.

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White to move: Win. Pip count: White 9, Black 27.

W:WK40,K41,46:B3,4,5

MoveResult
40-34Win
40-29Win
40-23Win
40-18Win
40-12Win
40-7Win
40-1Win
40-35Win
40-44Win
40-49Win
40-45Win
41-36Win
41-37Win
41-32Win
41-28Win
41-23Win
41-19Win
41-14Win
41-10Win
41-47Win

Both sides at highest pip count: loss

Both sides attain their maximum pip count; the player to move loses.

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Black to move: Loss. Pip count: White 9, Black 27.

B:WK40,K41,46:B3,4,5

MoveResult
3-9Loss
4-10Loss
3-8Loss
4-9Loss
5-10Loss