Jacks or Better — free trainer & exact strategy
Trainer — click cards to hold, then check
Every verdict is a live computation: the engine enumerates all possible draws for each of the 32 holds — the same math that produced the 99.5439% figure, verified against Wizard of Odds canon.
Paytables: why 9/6 matters
| Paytable | Full House / Flush | Return (optimal) | Cost vs 9/6, $ per hour* |
|---|---|---|---|
| 9/6 (full pay) | 9 / 6 | 99.5439% | — |
| 8/5 | 8 / 5 | 97.2984% | $16.84 |
| 7/5 | 7 / 5 | 96.1472% | $25.48 |
*600 hands/hour, $0.25 denomination, 5 coins. Same game, same strategy — the paytable alone changes your cost.
Quick strategy (simplified)
This 12-line chart plays at ~99.46% — about 0.08% below optimal. For exact play on every hand, use the trainer above or the hand calculator.
| # | Hold (highest on list that applies) |
|---|---|
| 1 | Royal flush, straight flush, four of a kind — keep pat |
| 2 | 4 to a royal flush (even breaking a flush/straight) |
| 3 | Full house, flush, straight — keep pat |
| 4 | Three of a kind |
| 5 | 4 to a straight flush |
| 6 | Two pair |
| 7 | High pair (jacks or better) |
| 8 | 3 to a royal flush |
| 9 | 4 to a flush |
| 10 | Low pair (tens or lower) |
| 11 | 4 to an open-ended straight |
| 12 | 2 suited high cards → else J/Q/K/A singles → else discard all |
FAQ
What does 9/6 Jacks or Better mean?
9/6 refers to the paytable: 9 coins for a full house and 6 for a flush (per coin bet). A 9/6 machine returns 99.5439% with optimal play. An 8/5 machine pays 8 and 5 instead and returns only 97.2984% — the same game, 2.25% more expensive.
What is the best strategy for Jacks or Better?
Always bet 5 coins (the royal pays 800:1 only at max bet, 250:1 otherwise), then follow hold priority: made hands first, then 4 to a royal, then high pairs, then draws by expected value. Our trainer checks every decision against the exact EV of all 32 possible holds.
How often do you hit a royal flush?
Playing 9/6 Jacks or Better optimally, a royal flush comes once per 40390.5 hands on average — our engine computed this across every possible deal. At 600 hands per hour, that is roughly 67 hours of play per royal.
Should I ever break a made flush or straight?
Yes — for a 4-card royal draw, and only for that. Holding 4 to a royal is worth ≈ 93 coins of expected value at a 5-coin bet, which crushes a pat flush (30 coins) or straight (20). A pat straight flush (250) you always keep. The trainer above shows these numbers live on any hand.
Is video poker better than slots?
Mathematically, yes: 9/6 Jacks or Better returns 99.54% with optimal play versus 85–96% for typical slots, and your decisions actually change the outcome.