Non capture positions

Win: 366.308 (73.0%)
Draw: 135.152 (26.9%)
Lose: 242 (0.0%)

All positions

Win: 465.316 (77.5%)
Draw: 135.152 (22.5%)
Lose: 242 (0.0%)

Native examples were selected after counting from 16248 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.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 9, Black 1.

W:W7,12,32:B45

MoveResult
7-1Win
32-27Draw
7-2Draw
12-8Draw
32-28Draw

Only move to draw

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Draw. Pip count: White 15, Black 1.

W:W16,26,37:B45

MoveResult
37-31Loss
16-11Draw
26-21Loss
37-32Loss

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.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 19, Black 1.

W:W27,32,41:B45

MoveResult
27-21Loss
41-36Win
27-22Draw
32-28Win
41-37Loss

Win with fewer pieces

The player to move has fewer pieces and a proven win.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Win. Pip count: White 23, Black 1.

B:W36,37,47:B45

MoveResult
45-50Win

Draw with fewer pieces

The player to move has fewer pieces and a proven draw.

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Draw. Pip count: White 17, Black 1.

B:W6,42,43:B45

MoveResult
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 14, Black 1.

W:W7,29,43:B44

MoveResult
7-1Draw
29-23Draw
43-38Draw
7-2Draw
29-24Draw
43-39Win

Promotion trap

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 9, Black 1.

W:W6,8,39:B45

MoveResult
8-2Win
39-33Win
6-1Draw
8-3Win
39-34Win

Both sides at highest pip count: win

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

W:W46,47,48:B5

MoveResult
47-41Win
48-42Win
46-41Win
47-42Win
48-43Win

Both sides at highest pip count: loss

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

B:W46,47,48:B5

MoveResult
5-10Loss