Rules and illustrations
Our main reference is Bill Whitnack’s four-player partnership account on Pagat. The meld gallery, transition timing and bonus excerpt use that label. Bicycle is used as a separately named setup comparison; provider help describes its own service.
Teaching and testing
Learning exercises are original suggestions, not official game rules. The stage tool assumes legal actions and shows timing only. The ledger adds agreed results. Source-based profiles remain Not tested unless a real date, device, version or mode, and concrete observations are recorded.
Corrections
Sources were checked on 20 October 2026. Send the relevant page URL, wording and a complete source when reporting an issue. The operator should update a source date only after actually reviewing it.