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Balanced (solver-style) · Expert · ★★★★★

Grinder, the balanced (solver-style) poker bot

A solver-style regular that mixes its bets and rarely gives anything away. From the cutoff Grinder plays 30.9% of hands; over a session it targets a VPIP of 24% and a PFR of 20%.

Opening range from the cutoff

AA AKs AQs AJs ATs A9s A8s A7s A6s A5s A4s A3s A2s
AKo KK KQs KJs KTs K9s K8s K7s K6s K5s K4s K3s K2s
AQo KQo QQ QJs QTs Q9s Q8s Q7s Q6s Q5s Q4s Q3s Q2s
AJo KJo QJo JJ JTs J9s J8s J7s J6s J5s J4s J3s J2s
ATo KTo QTo JTo TT T9s T8s T7s T6s T5s T4s T3s T2s
A9o K9o Q9o J9o T9o 99 98s 97s 96s 95s 94s 93s 92s
A8o K8o Q8o J8o T8o 98o 88 87s 86s 85s 84s 83s 82s
A7o K7o Q7o J7o T7o 97o 87o 77 76s 75s 74s 73s 72s
A6o K6o Q6o J6o T6o 96o 86o 76o 66 65s 64s 63s 62s
A5o K5o Q5o J5o T5o 95o 85o 75o 65o 55 54s 53s 52s
A4o K4o Q4o J4o T4o 94o 84o 74o 64o 54o 44 43s 42s
A3o K3o Q3o J3o T3o 93o 83o 73o 63o 53o 43o 33 32s
A2o K2o Q2o J2o T2o 92o 82o 72o 62o 52o 42o 32o 22
  • Raise 2.5bb · 30.9% · 410 combos
  • Fold · 69.1%

How Grinder plays

Grinder plays close to an equilibrium strategy: it opens about a quarter of hands from the cutoff, 3-bets a polarised range and splits its river bets between value and bluffs.

Its mixed frequencies are randomised hand by hand, so you cannot pick up a tell from timing or bet size alone.

What playing Grinder trains

  • Balanced ranges under pressure
  • Spotting your own leaks, since it punishes them without exploiting itself
  • Long sessions with no easy money

How to beat Grinder

There is no big exploit: aim to lose as little as possible by defending your blinds correctly and not overfolding to 3-bets.

Track your win rate over thousands of hands. Against Grinder, breaking even is a good result.

Hands Grinder mixes

These hands are opened only part of the time. The bot decides at random each hand, so you will see it both open and fold them.

K3s, Q6s, K9o, A5o

Questions about Grinder

How does the Grinder poker bot play?

Grinder plays close to an equilibrium strategy: it opens about a quarter of hands from the cutoff, 3-bets a polarised range and splits its river bets between value and bluffs. Its long-run targets are VPIP 24%, PFR 20%, 3-bet 8% and an aggression factor of 2.8.

How do you beat Grinder?

There is no big exploit: aim to lose as little as possible by defending your blinds correctly and not overfolding to 3-bets. Track your win rate over thousands of hands. Against Grinder, breaking even is a good result.

Is Grinder a good bot for beginners?

It is rated expert. Start against Sticky or Rock, then move up to Grinder once you are beating the softer bots.

Guides that use Grinder