Jacks or Better Trainer

Learn optimal play before you sit down at a ship's machine

CREDITS 1000 LAST WIN 0 HAND 0 PERFECT —
Pay table
Press DEAL to start.
1-5 hold · Space deal/draw · H hint
Right / wrong appears right here — the full coaching is in the panel below.
Coach
Your decision will be graded here against the exact optimal hold.
Every option, rankedEV & cost of the wrong hold

EV = expected coins back on this hand per 1 coin bet. The machine's long-run return is the average of these.

Pay table & return

Why max coins

The holding ladder


    Drill a situation

    Deal me a hand to practise:

    This session

    All time

    A session is today’s play — it survives a refresh and rolls over by itself tomorrow. Start a new session zeroes today’s hands, streak and leak but keeps your history; Erase my saved data deletes every hand, mistake and stat stored for you (press it twice).

    Where you leak

    Recent blunders

    Pick the machine

    Returns are the published long-run numbers for perfect play at max coins. Real sessions swing far more than that — see the variance run below.


    Cost of play


    Session variance run

    Plays 10000 perfect hands on the selected table so you can see the swings:


    Ship-floor tips