PokerSolver
PokerSolver/3-handed · 100bb · SB 0.4bb · 5% rake, cap 10bb/SB vs BTN 4-bet 18bb

SB vs BTN 4-bet 18bb

3-handed · SB 0.4bb · 5% rake, cap 10bb (blinds 0.4/1bb) · 100bb · BTN opens 2.6bb, SB 3-bets to 7.8bb, BTN 4-bets to 18bb · Small blind to act

3-handed · 100bb · SB 0.4bb · 5% rake, cap 10bbChange game
Stacks (bb), if they differ
Pot 26.8bbYour cards?
7.8bb
1bb
18bb

Tap your two cards.

Small blind's range

698 of 1,326 combos get here
Fold 81.3%Call 10.1%All-in 100bb 8.7%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind (SB) when BTN opens 2.6bb, SB 3-bets to 7.8bb, BTN 4-bets to 18bb in 3-handed · SB 0.4bb · 5% rake, cap 10bb at 100bb?

BTN opens 2.6bb, SB 3-bets to 7.8bb, BTN 4-bets to 18bb in 3-handed · SB 0.4bb · 5% rake, cap 10bb, 100bb: the small blind (SB) folds 81.3%, calls 10.1% and goes all-in 100bb 8.7%. Always call: AA. Mixed: 44-KK, 22, A9s+, A6s-A7s, A3s-A4s, KQs, KTs, K4s-K6s, QTs+, Q6s-Q7s, Q3s-Q4s, JTs, J6s, T5s, 96s-97s, 92s, 86s, 74s, 53s, AQo+, A9o, KQo.

Always fold
33, A8s, A5s, A2s, KJs, K8s-K9s, Q8s-Q9s, Q5s, J9s, J7s, J4s-J5s, J2s, T7s+, T3s, 98s, 94s-95s, 82s-83s, 73s, 32s, ATo-AJo, A6o-A7o, A3o-A4o, K9o-KJo, K7o, QTo, Q8o, Q6o, J9o+, 65o
Always call
AA
Always all-in 100bb
No hand plays this every time
Mixed
44-KK, 22, A9s+, A6s-A7s, A3s-A4s, KQs, KTs, K4s-K6s, QTs+, Q6s-Q7s, Q3s-Q4s, JTs, J6s, T5s, 96s-97s, 92s, 86s, 74s, 53s, AQo+, A9o, KQo
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.