Backgammon Move Calculator
Recreate the position, enter the roll, read off the answer.
Tap to add or remove checkers, or drag a checker to move it. Drag to the right tray to bear off.
The engine (~3 MB) loads on first analysis and then runs instantly in your browser.
A calculator, not an opinion
This tool works like a calculator in the most literal sense: you put in a position and a dice roll, and it computes — not guesses — the value of every legal play. Behind the button is a neural-network evaluation function that scores each resulting position by cubeful equity: the average number of points you can expect to win or lose from that position with correct play on both sides, doubling cube included. The plays are then ranked, and the differences shown against the best one, so you can see at a glance whether your candidate play was a rounding error away from correct or a genuine blunder.
Setting up takes seconds: tap a point to add checkers, drag to move them, and use the toolbar to switch colours or clear the board. Pick who is on roll and the dice, then calculate. The equity numbers are the same currency used by every serious analysis tool and every backgammon book written since computers settled the old arguments — if you can read +0.218, you can read any modern backgammon text. Start with the opening moves reference if you want worked examples for all fifteen first rolls.
Frequently asked questions
What does the equity number in the results mean?
Cubeful equity is the expected number of points you win or lose from the position, on average, with best play from both sides and correct cube handling. +0.100 means you expect to win a tenth of a point more than you lose.
Does the calculator handle doubles and hitting?
Yes. Every legal play is generated — doubles play four checkers, hits send opponent checkers to the bar — and each resulting position is evaluated. Only the top plays are shown, ranked best first.