PokerSolver
PokerSolver/3-handed · 100bb · SB 0.4bb · 5% rake, cap 10bb/BB vs BTN 4-bet 20.6bb

BB vs BTN 4-bet 20.6bb

3-handed · SB 0.4bb · 5% rake, cap 10bb (blinds 0.4/1bb) · 100bb · BTN opens 3bb, BB 3-bets to 9bb, BTN 4-bets to 20.6bb · Big blind to act

3-handed · 100bb · SB 0.4bb · 5% rake, cap 10bbChange game
Stacks (bb), if they differ
Pot 30bbYour cards?
9bb
20.6bb
0.4bb

Tap your two cards.

Big blind's range

842 of 1,326 combos get here
Fold 79.2%Call 11.3%All-in 100bb 9.6%
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 20.6bb in 3-handed · SB 0.4bb · 5% rake, cap 10bb at 100bb?

BTN opens 3bb, BB 3-bets to 9bb, BTN 4-bets to 20.6bb in 3-handed · SB 0.4bb · 5% rake, cap 10bb, 100bb: the big blind (BB) folds 79.2%, calls 11.3% and goes all-in 100bb 9.6%. Always call: ATs. Mixed: 77+, 33-55, AJs+, A9s, A5s-A6s, A2s-A3s, KQs, K9s-KTs, K7s, K4s-K5s, K2s, Q9s+, Q7s, Q5s, J9s+, J7s, J3s, T7s-T8s, T5s, 96s+, 86s, 84s, 76s, 73s-74s, 65s, 43s, ATo+, A8o, A5o, KTo, QJo.

Always fold
66, A7s-A8s, A4s, KJs, K8s, K6s, K3s, Q8s, Q3s-Q4s, J8s, J5s, J2s, T9s, T6s, T3s-T4s, 92s-94s, 87s, 85s, 83s, 75s, 62s-64s, 52s+, 42s, 32s, A9o, A6o-A7o, A2o-A4o, KJo+, K5o-K9o, Q8o-QTo, Q2o-Q4o, J9o+, J6o-J7o, 85o-86o
Always call
ATs
Always all-in 100bb
No hand plays this every time
Mixed
77+, 33-55, AJs+, A9s, A5s-A6s, A2s-A3s, KQs, K9s-KTs, K7s, K4s-K5s, K2s, Q9s+, Q7s, Q5s, J9s+, J7s, J3s, T7s-T8s, T5s, 96s+, 86s, 84s, 76s, 73s-74s, 65s, 43s, ATo+, A8o, A5o, KTo, QJo
Settings: 3-handed · 100bb · SB 0.4bb · 5% rake, cap 10bb (small blind 0.4bb, big blind 1bb, 100bb stacks, 5% rake capped at 10bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC). 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: GGPoker regular cash NL5 (rake cap 5bb there, 10bb here).

Close: CoinPoker cash NL5 (rake cap 6bb there, 10bb here; only its tables without antes).

Close: Natural8 regular cash NL5 (rake cap 5bb there, 10bb here).

Close: ACR Poker cash NL5 (rake cap 20bb there, 10bb here; its page does not say whether pots that end before the flop are raked).

Rake sources: ggpoker.com/poker-games/texas-holdem (fetched 2026-10-31); Rush rake and preflop rake confirmed on our own GG exports (972 of 1,034 pots, 210 of 211); regular tables' preflop rule from natural8.com/en/poker/texas-holdem (same network, fetched 2026-10-31); coinpoker.com/games/texas-holdem/ (caps and the preflop rule) and coinpoker.com/guides/poker-rake/ (5%), fetched 2026-10-31; natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).

Rake: Wrong rake for a 3-handed GG table: this solve caps the rake at 10bb, which is right only for a 6-max hand folded to the button. GG caps an NL5 table with 3 players dealt in at $0.25 (5bb). A solve with GG's cap is queued.