Backgammon Simulation

Upload a board image to extract its position and calculate win probability

Step 1 — Board Orientation

Where is White's home board (points 1–6) in your photo?

White home: bottom-right
B Outer
13–18
B Home
19–24
W Outer
7–12
W Home
1–6
Standard view (most common)
White home: bottom-left
B Home
19–24
B Outer
13–18
W Home
1–6
W Outer
7–12
Mirrored view
White home: top-right
W Outer
7–12
W Home
1–6
B Outer
13–18
B Home
19–24
Black's perspective
White home: top-left
W Home
1–6
W Outer
7–12
B Home
19–24
B Outer
13–18
Mirrored Black perspective
🎲
Select a board orientation above, then upload your image
Preview

Whose turn is it? (no dice rolled yet)

Verify Board State

Compare with your image and fix any errors. Positive = White checkers. Negative = Black checkers. Use − / + on each point.
Points 13 → 24  (Black moves →) 24 = Black bears off →
Points 12 → 1  (White moves →) 1 = White bears off →

⬜ Bar

0

⬛ Bar

0

⬜ Borne off

0

⬛ Borne off

0

Win Probability

White Wins

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Black Wins

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Simulations

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Board vector — 26 elements: points[0–23], white_bar, black_bar