PokerSolver
PokerSolver/Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/55

How to play 55 preflop

Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb · 37 spots where 55 gets a decision

Opens (raise first in)

Spot55
SB open (RFI)
First to act
Raise 2/2.5/3bb 100%

Facing an open or a limp

Spot55
BB vs SB limp
SB limps
Raise 2/2.5/3bb 97.8% · Call 2.2%
BB vs SB open 2bb
SB opens 2bb
Raise 4/6bb 99.7% · Call 0.3%
BB vs SB open 2.5bb
SB opens 2.5bb
Raise 5/7.5bb 80.4% · Call 19.6%
BB vs SB open 3bb
SB opens 3bb
Call 85.4% · Raise 6/9bb 14.6%

Facing a 3-bet

Spot55
BB vs SB 3-bet 4bb
SB limps, BB isolates to 2bb, SB 3-bets to 4bb
Call 89.2% · All-in 79.84bb 9.3% · Fold 1.3% · Raise 9.2bb 0.2%
BB vs SB 3-bet 6bb
SB limps, BB isolates to 2bb, SB 3-bets to 6bb
Call 95.9% · Fold 2% · Raise 13.8bb 1.1% · All-in 79.84bb 1%
BB vs SB 3-bet 5bb
SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb
Call 71.6% · Raise 11.5bb 24.7% · Fold 3.6%
BB vs SB 3-bet 7.5bb
SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb
Call 48.1% · Fold 35.8% · All-in 79.84bb 15.6% · Raise 17.25bb 0.5%
BB vs SB 3-bet 6bb
SB limps, BB isolates to 3bb, SB 3-bets to 6bb
Call 93.4% · All-in 79.84bb 4.7% · Fold 1.4% · Raise 13.8bb 0.5%
BB vs SB 3-bet 9bb
SB limps, BB isolates to 3bb, SB 3-bets to 9bb
Fold 31.9% · All-in 79.84bb 27.6% · Call 25.5% · Raise 20.7bb 15.1%
SB vs BB 3-bet 4bb
SB opens 2bb, BB 3-bets to 4bb
Call 99.8% · All-in 79.84bb 0.1%
SB vs BB 3-bet 6bb
SB opens 2bb, BB 3-bets to 6bb
Call 100%
SB vs BB 3-bet 5bb
SB opens 2.5bb, BB 3-bets to 5bb
Call 87.4% · All-in 79.84bb 7.3% · Raise 11.5bb 5.3%
SB vs BB 3-bet 7.5bb
SB opens 2.5bb, BB 3-bets to 7.5bb
Call 92% · All-in 79.84bb 8%
SB vs BB 3-bet 6bb
SB opens 3bb, BB 3-bets to 6bb
Call 74.4% · All-in 79.84bb 25.4% · Raise 13.8bb 0.2%
SB vs BB 3-bet 9bb
SB opens 3bb, BB 3-bets to 9bb
Call 100%

Facing a 4-bet

Spot55
BB vs SB 4-bet 9.2bb
SB opens 2bb, BB 3-bets to 4bb, SB 4-bets to 9.2bb
Call 96.1% · All-in 79.84bb 3.2% · Fold 0.7%
BB vs SB all-in
SB opens 2bb, BB 3-bets to 4bb, SB goes all-in
Fold 92.8% · Call 7.2%
BB vs SB 4-bet 13.8bb
SB opens 2bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb
Call 96.8% · Fold 2.5% · All-in 79.84bb 0.7%
BB vs SB all-in
SB opens 2bb, BB 3-bets to 6bb, SB goes all-in
Fold 52.5% · Call 47.5%
BB vs SB 4-bet 11.5bb
SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb
Call 75.2% · All-in 79.84bb 24.2% · Fold 0.7%
BB vs SB all-in
SB opens 2.5bb, BB 3-bets to 5bb, SB goes all-in
Fold 99.8% · Call 0.2%
BB vs SB 4-bet 17.25bb
SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb
Call 70% · All-in 79.84bb 29% · Fold 1%
BB vs SB all-in
SB opens 2.5bb, BB 3-bets to 7.5bb, SB goes all-in
Fold 68.6% · Call 31.4%
BB vs SB 4-bet 13.8bb
SB opens 3bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb
Call 76.7% · All-in 79.84bb 23.3%
BB vs SB all-in
SB opens 3bb, BB 3-bets to 6bb, SB goes all-in
Fold 99.1% · Call 0.9%
BB vs SB 4-bet 20.7bb
SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb
Call 53.6% · All-in 79.84bb 43.9% · Fold 2.5%
BB vs SB all-in
SB opens 3bb, BB 3-bets to 9bb, SB goes all-in
Call 54.6% · Fold 45.4%

Facing a 5-bet or shove

Spot55
BB vs SB all-in
SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB 4-bets to 9.2bb, SB goes all-in
Call 75.5% · Fold 24.5%
BB vs SB all-in
SB limps, BB isolates to 2bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb, SB goes all-in
Call 65.1% · Fold 34.9%
BB vs SB all-in
SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB 4-bets to 11.5bb, SB goes all-in
Fold 93.9% · Call 6.1%
BB vs SB all-in
SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB 4-bets to 17.25bb, SB goes all-in
Fold 70.2% · Call 29.8%
BB vs SB all-in
SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb, SB goes all-in
Call 81.4% · Fold 18.6%
BB vs SB all-in
SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in
Fold 65.4% · Call 34.6%
SB vs BB all-in
SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb, BB goes all-in
Call 99.3% · Fold 0.7%
SB vs BB all-in
SB opens 3bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb, BB goes all-in
Fold 93.6% · Call 6.4%
Settings: Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 22.38). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.