PokerSolver
PokerSolver/Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb/K4o

How to play K4o preflop

Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb · 30 spots where K4o gets a decision

Opens (raise first in)

SpotK4o
SB open (RFI)
First to act
Raise 2/2.5/3bb 83.6% · Call 16.4%

Facing an open or a limp

SpotK4o
BB vs SB limp
SB limps
Call 100%
BB vs SB open 2bb
SB opens 2bb
Call 100%
BB vs SB open 2.5bb
SB opens 2.5bb
Call 96.8% · Fold 3.2%
BB vs SB open 3bb
SB opens 3bb
Fold 99.9% · Call 0.1%

Facing an isolation raise

SpotK4o
SB vs BB iso raise 2bb
SB limps, BB isolates to 2bb
Call 99.2% · Raise 4/6bb 0.6% · Fold 0.2%
SB vs BB iso raise 2.5bb
SB limps, BB isolates to 2.5bb
Call 75.1% · Raise 5/7.5bb 24.8%
SB vs BB iso raise 3bb
SB limps, BB isolates to 3bb
Call 41.6% · Raise 6/9bb 35.9% · Fold 22.5%

Facing a 3-bet

SpotK4o
SB vs BB 3-bet 4bb
SB opens 2bb, BB 3-bets to 4bb
Call 97.7% · Raise 9.2bb 2.3%
SB vs BB 3-bet 6bb
SB opens 2bb, BB 3-bets to 6bb
Fold 90% · Raise 13.8bb 9.9% · Call 0.1%
SB vs BB 3-bet 5bb
SB opens 2.5bb, BB 3-bets to 5bb
Call 88% · Fold 11.1% · Raise 11.5bb 0.9%
SB vs BB 3-bet 7.5bb
SB opens 2.5bb, BB 3-bets to 7.5bb
Fold 95.4% · Raise 17.25bb 4.5% · Call 0.1%
SB vs BB 3-bet 6bb
SB opens 3bb, BB 3-bets to 6bb
Call 60.5% · Fold 22.6% · All-in 79.84bb 16.4% · Raise 13.8bb 0.5%
SB vs BB 3-bet 9bb
SB opens 3bb, BB 3-bets to 9bb
Fold 65.4% · Raise 20.7bb 34.6%

Facing a 4-bet

SpotK4o
SB vs BB 4-bet 9.2bb
SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB 4-bets to 9.2bb
Fold 93.2% · Call 6.8%
SB vs BB all-in
SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB goes all-in
Fold 99.8% · Call 0.2%
SB vs BB 4-bet 11.5bb
SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB 4-bets to 11.5bb
Call 72.3% · Fold 27.7%
SB vs BB all-in
SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB goes all-in
Fold 100%
SB vs BB 4-bet 17.25bb
SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB 4-bets to 17.25bb
Fold 85.9% · Call 13.9% · All-in 79.84bb 0.1%
SB vs BB all-in
SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB goes all-in
Fold 100%
SB vs BB 4-bet 13.8bb
SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb
Fold 91% · Call 9%
SB vs BB all-in
SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB goes all-in
Fold 100%
SB vs BB 4-bet 20.7bb
SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb
Fold 87.1% · Call 12.9%
SB vs BB all-in
SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB goes all-in
Fold 100%

Facing a 5-bet or shove

SpotK4o
SB vs BB all-in
SB opens 2bb, BB 3-bets to 4bb, SB 4-bets to 9.2bb, BB goes all-in
Fold 100%
SB vs BB all-in
SB opens 2bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb, BB goes all-in
Fold 100%
SB vs BB all-in
SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb, BB goes all-in
Fold 100%
SB vs BB all-in
SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb, BB goes all-in
Fold 100%
SB vs BB all-in
SB opens 3bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb, BB goes all-in
Fold 100%
SB vs BB all-in
SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in
Fold 100%
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.