The Big Blind is a defensive position — you close the action preflop and get a discount to call. GTO defends wide vs small opens (especially from the BTN) but knows when to fold vs tight UTG ranges. Mastering BB defense is the fastest win-rate boost for most players. At 200bb you are deep-stacked — implied odds skyrocket, but so does the cost of dominated hands. GTO actually tightens from early position at 200bb (reverse implied odds hurt), while late position can still open wide. Postflop skill matters most here. Below is the GTO range grid for BB at 200bb (6-max, rake 5% cap $3) — green = raise, amber = call, red = fold. Hover any hand for exact frequencies and EV.
63.3%
Raise (107)
0.0%
Call (0)
36.7%
Fold (62)
Hover or tap a hand to see GTO action, frequencies, and EV.
Pre-computed with TexasSolver · 0.5% exploitability · Rake 5% cap $3 · 6-max
| Action | Hands | Frequency | Avg EV (bb) |
|---|---|---|---|
| Raise | 107 / 169 | 63.3% | 1.24 bb |
| Call | 0 / 169 | 0.0% | 0.00 bb |
| Fold | 62 / 169 | 36.7% | 0.07 bb |
From the Big Blind, defend wide vs BTN/SB opens (call with any suited hand, most offsuit broadways, and pairs), but fold more vs UTG/HJ. Vs a 2.5x BTN open at 100bb, GTO defends ~55–60% — if you fold more, regs exploit you by opening 100%. Deep-stack strategy: prioritize hands that make nutted postflop hands — suited connectors, suited aces, and big pairs. Avoid dominated offsuit hands from early position; they lose huge pots when outkicked. Postflop edge matters more than preflop frequency.
Pro tip: BB defense is the #1 leak for microstakes players. If you fold BB vs BTN more than 45% at 100bb, regs print money against you. Study which suited hands GTO calls and why.
GTO open-raise frequency for BB at 200bb depends on rake and field, but our TexasSolver-based chart (0.5% exploitability, 5% rake cap $3) shows the solver-preferred raise/call/fold mix for all 169 hands. Hover the grid above for exact frequencies per hand. Generally, BB is defensive (call-heavy vs steals) — see the grid for 200bb specifics.
Use the 3-step method: (1) Quiz yourself — cover the grid and ask 'What does GTO do with AJo BB 200bb?' (2) Check and note surprises. (3) Drill the borderline hands (the amber/mixed cells) with Lab's spaced-repetition drills. 10 minutes a day per position beats cramming.
These ranges are solved for 6-max cash, 5% rake cap $3, which matches most micro-to-mid stakes online games. At very low stakes with high rake or vs extremely tight/loose opponents, exploitative adjustments beat pure GTO — but you need to know GTO first to know when to deviate. See our Methodology for solver details.
No. This chart is for post-hand study only. Using any solver chart or AI assistance during live play violates PokerStars and GGPoker Terms ofService and risks account bans and fund seizure. Study off-table, play your A-game on-table.
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