PokerSolver
PokerSolver/6-max · 100bb · SB 0.5bb · 5% rake, cap 3bb/BB vs SB 4-bet 17.25bb

BB vs SB 4-bet 17.25bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 100bb · SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb · Big blind to act

6-max · 100bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 24.75bbYour cards?
7.5bb
17.25bb

Tap your two cards.

Big blind's range

684 of 1,326 combos get here
Fold 52.3%Call 32.5%Raise 37.95bb 12.7%All-in 100bb 2.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in 6-max · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 52.3%, calls 32.5%, raises 37.95bb 12.7% and goes all-in 100bb 2.6%. Always call: AA, 88-TT, 55-66, AJs-AQs, A2s-A3s, KTs+, K6s-K8s, K4s, K2s, QTs+, J8s+, T7s+, 97s+, 86s+, 76s, 64s+, 53s+, 43s, AQo, KQo. Always raise 37.95bb: A7o, A5o, KTo-KJo. Mixed: JJ-KK, 77, AKs, A4s-A7s, 96s, AKo, AJo, K9o, JTo.

Always fold
J2s-J4s, T2s-T6s, 92s-95s, 84s, 62s-63s, 52s, 32s, A6o, A2o-A4o, K3o-K8o, Q5o-Q8o, J7o-J9o, T7o+, 54o
Always call
AA, 88-TT, 55-66, AJs-AQs, A2s-A3s, KTs+, K6s-K8s, K4s, K2s, QTs+, J8s+, T7s+, 97s+, 86s+, 76s, 64s+, 53s+, 43s, AQo, KQo
Always raise 37.95bb
A7o, A5o, KTo-KJo
Always all-in 100bb
No hand plays this every time
Mixed
JJ-KK, 77, AKs, A4s-A7s, 96s, AKo, AJo, K9o, JTo
Settings: 6-max · 100bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 100bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 26.89). 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: GGPoker Rush & Cash NL2, NL10, NL50, NL100, NL200; GGPoker regular cash NL200; Natural8 Rush & Cash NL2, NL10, NL50, NL100, NL200; Natural8 regular cash NL200.

Close: GGPoker regular cash NL100 (rake cap 5bb there, 3bb here).

Close: PokerStars Zoom NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars Zoom NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: CoinPoker cash NL100 (rake cap 5bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL200 (only its tables without antes).

Close: WPT Global cash NL10, NL20 (rake cap 6bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL100, NL200 (rake cap 4bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL400, NL600, NL1000 (rake cap 2bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: Natural8 regular cash NL100 (rake cap 5bb there, 3bb here).

Close: ACR Poker cash NL50 (rake cap 6bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL100 (its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL200 (rake cap 1.5bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

CoinPoker tables with antes: their own chart.

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); natural8.com/en/poker/rush-and-cash (fetched 2026-10-31; caps $0.06 to $6, 3bb at every stake); the same GGNetwork pools as GGPoker, whose preflop rake we confirmed on GG exports; natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); pokerstars.com/poker/room/rake (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; wptglobal.com/poker/poker-table-rake (fetched 2026-10-31); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).

Tree: Two HRC solves of this game in one: the extra-sizes solve (3-bets to 2x, 3x or 4x, 4-bets to 2.3x or 3x or all-in) wherever it has every move of the base solve, and the base solve where the extra-sizes one allows no second caller (overcalls).