LearnModule F1 · Single-raised pots: raiser in position

F1-L4

Checking back, and betting later

When checking back the flop beats betting, how to bet the turn after that check, and when slowplaying a strong hand makes sense.

The flop drills here are dealt from Rail's flop library: twelve heads-up 6-max 100bb lines, each solved on 100 representative flops. A drill's flop is one of those, so it is graded combo for combo. Your own hands on any other flop are read from the nearest solved flop by hand category, and the analysis marks those grades as mapped.

Approximate: the ranges here are hand-written teaching ranges or rest on Rail's narrowing model, not on a solve of the whole hand. The direction is what to take away.

In this lesson

  • Choose the hands that do better checking back the flop.
  • Bet the turn when the caller checks again and shows a capped range.
  • Slowplay only when the board is static and the opponent's range is weak.
  • Bet strong hands fast against passive opponents.

The checking range

When the raiser checks back the flop in position, it is not a give-up; it is the other half of the plan. The checking range holds medium hands that want showdown, weak hands with some equity that would rather see a free card, and a few strong hands, so that a turn bet from the big blind does not find you with nothing.

Checking back has two costs: you give a free card, and you let the big blind see a turn without paying. On static boards those costs are small; on dynamic boards they are bigger, which is why the checking range shrinks there.

Betting the turn after a check

When you check back and the big blind checks again on the turn, its range is capped: the strong hands it holds would often have bet. Your checked range still holds some strong hands and many medium ones, so a turn bet does well: thin value from the medium hands that improved or are still ahead, and bluffs from the hands that missed.

That is the delayed c-bet. The turn card matters: a card that helps the raiser's range, such as an overcard to the board, is a good one to bet; a card that completes the big blind's draws calls for more care.

5.5 bb
4.1 bb
45%
Alpha: folds needed
42.7%
EV if it never wins when called
+0.22 bbProfitable
A turn bet of three quarters of the pot into 5.5 bb needs about 43% folds as a pure bluff. Move the fold rate to see where it profits.

Fast or slow with strong hands

A strong hand that checks back the flop gives up a street of value. It pays back when the big blind bets the turn into a capped-looking range, or when its own range needs protecting. Against players who rarely bet when checked to, that pay-back never comes: bet your strong hands on the flop.

The flop drills come from Rail's flop library; the turn drills are solved on demand from ranges Rail narrows through the flop. Your own hands on flops the library did not solve are read from the nearest solved flop.

Rules of thumb

  • Check back the hands that win at showdown but cannot stand a raise.
  • Keep a few strong hands in the checking range.
  • After the flop checks through, bet the turn often when the big blind checks again: its range is capped.
  • Against opponents who never bet when checked to, bet your strong hands on the flop.

When they break

  • On very dynamic boards, checking back gives away too much; bet more medium hands for protection.
  • Against opponents who stab every turn after a check, check back more strong hands and let them bet.

Example hands

Examples come from two places only: your own analysed hands in this lesson's spots, and a hand Rail deals and grades itself. Never a hand from outside Rail.

From your own hands

Sign in, with analysed hands, to see examples from your own play here.

A hand Rail deals

Rail scripts this hand from the lesson's own practice, always the same one, and grades it with the analysis. Decide first, then read Rail's verdict.

Practice

The lesson is mastered when every exercise below that Rail can grade is passed. Missed items come back later as review cards.

Exercise 1

Pass: 2 of 4 right

Four flops from Rail's library, you in position as the raiser after a check, dealt hands where the solve mixes: bet or check?

Exercise 2

Pass: 2 of 3 right

Three turns after you checked back the flop and the big blind checked again, solved on demand.

Exercise 3

Optional

Your own hands flagged for checking back a very strong hand, the costliest first.

Sign in to practise on your own hands.

Module F1 review · Single-raised pots: raiser in position

6 items mixed across this module's lessons: a spot from one lesson, a sum from another. Telling which idea a spot asks for is half of it. Missed items join your review cards; the score is not kept.

Checking back, and betting later — Learn | Rail