Non capture positions

Win: 6 (0.0%)
Draw: 1.927.758 (1.5%)
Lose: 123.963.350 (98.5%)

All positions

Win: 13.965.701 (4.5%)
Draw: 84.691.067 (27.5%)
Lose: 209.762.882 (68.0%)

Native examples were selected after counting from 8955 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.

No qualifying example proved from the available WDL data.

Only move to draw

At least two legal moves; exactly one draws and every alternative loses.

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White to move: Draw. Pip count: White 0, Black 13.

W:WK22:B8,34,K37,43,45

MoveResult
22-17Loss
22-11Loss
22-6Loss
22-18Loss
22-13Loss
22-9Loss
22-4Loss
22-27Loss
22-31Loss
22-36Loss
22-28Loss
22-33Loss
22-39Draw
22-44Loss
22-50Loss

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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White to move: Draw. Pip count: White 0, Black 16.

W:WK48:B12,14,K23,44,45

MoveResult
48-42Loss
48-37Loss
48-31Loss
48-26Draw
48-43Loss
48-39Loss
48-34Loss
48-30Loss
48-25Draw

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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Black to move: Win. Pip count: White 0, Black 7.

B:WK48:B30,K39,43,44,45

MoveResult
39-33Draw
39-28Draw
39-22Draw
39-17Draw
39-11Draw
39-6Draw
39-34Draw
30-35Win
43-49Draw
44-50Win
30-34Win
44-49Win
45-50Win

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.