Non capture positions

Win: 482.825.538 (88.8%)
Draw: 60.605.020 (11.2%)
Lose: 0 (0.0%)

All positions

Win: 1.382.046.477 (89.5%)
Draw: 162.057.467 (10.5%)
Lose: 861.256 (0.1%)

Native examples were selected after counting from 5069 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:WK3,K7,K18,50:BK39,44

MoveResult
3-8Draw
3-12Draw
3-17Draw
3-21Draw
3-26Draw
3-9Draw
3-14Draw
3-20Draw
3-25Draw
7-1Draw
7-2Draw
7-11Draw
7-16Draw
7-12Draw
18-12Draw
18-13Draw
18-9Draw
18-4Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
18-34Draw
18-40Win
18-45Draw
50-45Draw

Only move to draw

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Draw. Pip count: White 9, Black 9.

B:WK22,K27,K28,46:B5,K50

MoveResult
50-44Loss
50-39Loss
50-33Loss
50-45Loss
5-10Draw

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 9, Black 3.

W:WK17,K21,K32,50:B34,K35

MoveResult
17-11Loss
17-6Loss
17-12Draw
17-8Draw
17-3Win
17-22Loss
17-28Loss
17-33Loss
17-39Draw
17-44Loss
21-16Win
21-26Draw
21-27Win
32-27Win
32-28Draw
32-23Draw
32-19Draw
32-14Draw
32-10Draw
32-5Draw
32-37Draw
32-41Draw
32-46Draw
32-38Loss
32-43Draw
32-49Win
50-44Draw
50-45Win

Win with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Win. Pip count: White 9, Black 3.

B:WK17,K21,K32,50:B34,K35

MoveResult
35-30Loss
35-24Loss
35-19Loss
35-13Loss
35-8Loss
35-2Loss
35-40Loss
35-44Loss
35-49Loss
34-40Loss
34-39Win

Draw with fewer pieces

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Black to move: Draw. Pip count: White 9, Black 9.

B:WK4,K34,K43,46:B5,K50

MoveResult
50-44Loss
50-39Draw
50-33Loss
50-28Loss
50-22Loss
50-17Loss
50-11Loss
50-6Loss
50-45Loss
5-10Draw

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 9, Black 1.

W:WK3,K7,K18,50:BK39,44

MoveResult
3-8Draw
3-12Draw
3-17Draw
3-21Draw
3-26Draw
3-9Draw
3-14Draw
3-20Draw
3-25Draw
7-1Draw
7-2Draw
7-11Draw
7-16Draw
7-12Draw
18-12Draw
18-13Draw
18-9Draw
18-4Draw
18-22Draw
18-27Draw
18-31Draw
18-36Draw
18-23Draw
18-29Draw
18-34Draw
18-40Win
18-45Draw
50-45Draw

Promotion trap

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

No qualifying example proved from the available WDL data.

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 9, Black 9.

W:WK1,K35,K36,46:B5,K50

MoveResult
1-6Win
1-7Win
1-12Win
1-18Win
1-23Win
1-29Win
1-34Win
1-40Win
1-45Win
35-30Win
35-24Win
35-19Win
35-13Win
35-8Win
35-2Win
35-40Win
35-44Draw
35-49Win
36-31Win
36-27Win
36-22Draw
36-18Win
36-13Win
36-9Win
36-4Win
36-41Win
36-47Win
46-41Win

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 9, Black 9.

B:WK1,K35,K36,46:B5,K50

MoveResult
50-44Loss
50-39Loss
50-33Loss
50-28Loss
50-22Loss
50-17Loss
50-11Loss
50-6Loss
50-45Loss
5-10Loss