Non capture positions

Win: 513.014 (1.7%)
Draw: 29.883.099 (98.2%)
Lose: 42.974 (0.1%)

All positions

Win: 3.429.703 (6.7%)
Draw: 47.263.184 (92.0%)
Lose: 676.233 (1.3%)

Native examples were selected after counting from 10424 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 6, Black 0.

W:W6,K21,27:BK33,K38

MoveResult
21-16Win
21-17Loss
21-12Draw
21-8Draw
21-3Draw
21-26Draw
6-1Draw
27-22Draw

Only move to draw

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

W:WK3,9,35:BK1,K26

MoveResult
3-8Loss
3-12Loss
3-17Loss
3-21Loss
35-30Loss
9-4Draw

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 5, Black 0.

W:WK9,13,16:BK23,K36

MoveResult
9-3Draw
9-4Win
9-14Loss
9-20Loss
9-25Draw
13-8Draw
16-11Draw

Win with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Win. Pip count: White 6, Black 0.

B:WK1,6,26:BK38,K45

MoveResult
38-32Win
38-27Win
38-21Loss
38-16Win
38-33Draw
38-29Draw
38-24Draw
38-20Draw
38-15Draw
38-42Draw
38-47Draw
38-43Win
38-49Win
45-40Draw
45-34Draw
45-29Draw
45-23Loss
45-18Loss
45-12Loss
45-7Loss
45-50Draw

Draw with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

B:WK5,36,46:BK27,K31

MoveResult
27-21Loss
27-16Draw
27-22Loss
27-18Draw
27-13Draw
27-9Draw
27-4Draw
27-32Loss
27-38Draw
27-43Draw
27-49Draw
31-26Draw
31-37Draw
31-42Draw
31-48Draw

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 5, Black 0.

W:WK2,14,18:BK24,K30

MoveResult
2-7Draw
2-11Draw
2-16Draw
2-8Draw
2-13Draw
2-19Loss
14-9Draw
18-12Draw
14-10Draw
18-13Win

Promotion trap

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

White to move: Win. Pip count: White 6, Black 0.

W:W6,K21,27:BK33,K38

MoveResult
21-16Win
21-17Loss
21-12Draw
21-8Draw
21-3Draw
21-26Draw
6-1Draw
27-22Draw

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.