Non capture positions

Win: 30.877.933 (4.0%)
Draw: 733.184.209 (96.0%)
Lose: 1.495 (0.0%)

All positions

Win: 261.596.224 (11.3%)
Draw: 2.038.731.680 (88.0%)
Lose: 17.119.896 (0.7%)

Native examples were selected after counting from 5379 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 9, Black 9.

W:WK22,K28,46:B5,K42,K50

MoveResult
22-17Loss
22-11Loss
22-6Win
22-18Loss
22-13Loss
22-9Loss
22-4Draw
22-27Loss
22-31Loss
22-36Draw
28-23Draw
28-19Draw
28-14Draw
28-10Draw
28-32Draw
28-37Loss
28-41Draw
28-33Loss
28-39Loss
28-44Loss
46-41Loss

Only move to draw

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

No qualifying example proved from the available WDL data.

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.

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

W:WK22,K28,46:B5,K42,K50

MoveResult
22-17Loss
22-11Loss
22-6Win
22-18Loss
22-13Loss
22-9Loss
22-4Draw
22-27Loss
22-31Loss
22-36Draw
28-23Draw
28-19Draw
28-14Draw
28-10Draw
28-32Draw
28-37Loss
28-41Draw
28-33Loss
28-39Loss
28-44Loss
46-41Loss

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.

No qualifying example proved from the available WDL data.

Unique winning sacrifice

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

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

W:WK3,K6,46:B5,K43,K50

MoveResult
3-8Loss
3-12Loss
3-17Win
3-21Draw
3-26Draw
3-9Loss
3-14Loss
3-20Loss
3-25Draw
6-1Draw
6-11Draw
6-17Draw
6-22Draw
6-28Draw
6-33Draw
6-39Draw
6-44Draw
46-41Draw

Promotion trap

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

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Black to move: Win. Pip count: White 4, Black 1.

B:WK18,23,K34:BK1,K44,45

MoveResult
1-6Draw
1-7Draw
1-12Draw
44-39Draw
44-33Draw
44-28Win
44-22Draw
44-17Draw
44-11Draw
44-6Draw
44-40Draw
44-35Draw
44-49Draw
44-50Draw
45-50Draw

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:WK22,K28,46:B5,K42,K50

MoveResult
22-17Loss
22-11Loss
22-6Win
22-18Loss
22-13Loss
22-9Loss
22-4Draw
22-27Loss
22-31Loss
22-36Draw
28-23Draw
28-19Draw
28-14Draw
28-10Draw
28-32Draw
28-37Loss
28-41Draw
28-33Loss
28-39Loss
28-44Loss
46-41Loss

Both sides at highest pip count: loss

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

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

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

W:WK5,K46,47:B4,K28,K32

MoveResult
5-10Loss
5-14Loss
5-19Loss
5-23Loss
46-41Loss
46-37Loss
47-41Loss
47-42Loss