BB vs BTN 4-bet 20.7bb
6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 60bb · BTN opens 3bb, BB 3-bets to 9bb, BTN 4-bets to 20.7bb · Big blind to act
Fits exactlyno game we have checked
CloseCP1 games
- CPCoinPoker cash with antes NL50rake before the flop in 3-bet pots there, none here
6-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 31.16bbYour cards?
9bb
20.7bb
0.5bb
Tap your two cards.
Big blind's range
602 of 1,326 combos get hereFold 70.1%Call 9%All-in 59.84bb 20.9%
Tap a hand, or type one above, to see its exact mix.
What is the GTO play for the big blind (BB) when BTN opens 3bb, BB 3-bets to 9bb, BTN 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 60bb?
BTN opens 3bb, BB 3-bets to 9bb, BTN 4-bets to 20.7bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 60bb: the big blind (BB) folds 70.1%, calls 9% and goes all-in 59.84bb 20.9%. Always call: ATs, A5s, KTs, QTs, 76s. Always all-in 59.84bb: 44+, AJs+, KJs+, QJs, AQo+. Mixed: K5s, 96s-97s, 75s, AJo, KJo+.
- Always fold
- Q5s, Q2s-Q3s, J4s-J6s, T2s-T6s, 94s-95s, 74s, 63s, ATo, A2o-A6o, K9o-KTo, K5o-K7o, Q8o+, J9o, T7o+, 97o+, 87o, 76o
- Always call
- ATs, A5s, KTs, QTs, 76s
- Always all-in 59.84bb
- 44+, AJs+, KJs+, QJs, AQo+
- Mixed
- K5s, 96s-97s, 75s, AJo, KJo+
Settings: 6-max · 60bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 60bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.91). 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.
Rake sources for the games it fits: 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.