Non capture positions

Win: 1.775.068.306 (98.3%)
Draw: 31.491.058 (1.7%)
Lose: 1 (0.0%)

All positions

Win: 8.938.004.573 (98.0%)
Draw: 180.486.577 (2.0%)
Lose: 286.650 (0.0%)

Native examples were selected after counting from 5651 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 1, Black 6.

W:WK2,8,K24,K31:B34,40,43

MoveResult
2-7Draw
2-11Win
2-16Draw
24-19Draw
24-13Draw
24-20Draw
24-15Draw
24-29Draw
24-33Draw
24-38Draw
24-42Draw
24-47Draw
24-30Draw
24-35Draw
31-26Draw
31-27Draw
31-22Draw
31-18Draw
31-13Draw
31-9Draw
31-4Draw
31-36Draw
31-37Draw
31-42Draw
31-48Draw
8-3Draw

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 1, Black 9.

B:WK4,8,K18,K46:B16,40,45

MoveResult
16-21Loss
40-44Draw
45-50Loss

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 1, Black 6.

B:WK2,6,K24,K31:B34,40,43

MoveResult
40-45Draw
43-49Loss
34-39Loss
40-44Draw
43-48Loss

Unique winning sacrifice

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

No qualifying example proved from the available WDL data.

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 12.

W:W7,K48,K49,K50:B13,29,41

MoveResult
48-42Win
48-37Win
48-31Win
48-26Win
48-43Win
48-39Win
48-34Draw
48-30Win
48-25Win
49-43Win
49-38Win
49-32Win
49-27Win
49-21Win
49-16Win
49-44Win
49-40Win
49-35Win
50-44Win
50-39Win
50-33Win
50-28Win
50-22Win
50-17Win
50-11Win
50-6Win
50-45Win
7-1Win
7-2Draw

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:WK1,K2,K6,46:B3,4,5

MoveResult
1-7Win
1-12Win
1-18Win
1-23Win
1-29Win
1-34Win
1-40Win
1-45Win
2-7Win
2-11Win
2-16Win
2-8Win
2-13Win
2-19Win
2-24Win
2-30Win
2-35Win
6-11Win
6-17Win
6-22Win
6-28Win
6-33Win
6-39Win
6-44Win
6-50Win
46-41Win

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:WK1,K2,K6,46:B3,4,5

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