Backgammon Solver
Free best-move calculator — set up any position, pick the dice, and get instant expert analysis.
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.
How it works
This backgammon solver runs a world-class neural-net engine (GNU Backgammon) directly in your browser — nothing is uploaded, and analysis is free and unlimited. Set up the board with taps or drags, choose who is on roll and the dice, then hit Analyze move. You get the top plays ranked by cubeful equity, with winning chances and gammon rates for each, and the best move drawn on the board. Use Cube decision to check doubles: whether to offer, take, or pass.
The default depth, 2-ply, matches the standard used by desktop analysis tools and answers in about a second on a phone. Instant mode is great for quick checks, and Deep (3-ply) squeezes out the last drops of accuracy in tricky positions. Positions get a shareable link, so you can send any analysis to a friend or your study group.
New to opening theory? The best opening move for every roll is precomputed and explained — the fastest fifteen lessons in backgammon.