Bridgecrunch
Practise contract bridge, one hand at a time
Bridgecrunch is a free, browser-based trainer for contract bridge: a set of declarer-play puzzles and a double-dummy solver you can use to analyse and replay any deal.
Declarer-play puzzles
Bridgecrunch ships with 100 declarer-play puzzles. In each one you play the contract as declarer (and dummy) while the computer defends double-dummy — that is, perfectly. Every deal is constructed so the contract makes exactly, with no overtrick to spare, which means there is a single winning line to find and every card matters.
Puzzles are graded by difficulty and tagged by the technique they test:
Difficulty runs from Easy through Medium and Hard to Expert, so there is a ladder to climb whether you are a newer player learning to count winners at notrump or an experienced one hunting a hidden endplay.
Double-dummy solver & board editor
The solver lets you deal or paste any hand — as PBN, BBO LIN, or a BBO Hand Viewer link — and play it out with full follow-suit rules, trick-winner detection and undo/redo. A double-dummy engine shows the makeable contracts for every declarer and strain, so you can check the theoretical result of a deal or set up an endgame position to study.
Who it is for
- Players who want structured declarer-play practice rather than random hands.
- Anyone learning bridge technique — finesses, ruffs, endplays, suit establishment.
- Teachers and students who want to replay or analyse a specific deal.