Defending and leading multiway

How to defend against a bet when other players are still to act behind you, and when to lead into the field yourself.

Rail's flop library is heads-up. Multiway flops are read by the analysis' heuristic and the minimum-defence split, with facts and flags but no solver grade (a call or fold facing a bet gets an approximate one), so this lesson's practice is arithmetic and your own hands.

In this lesson

Defend tighter when players behind you can still raise.
Call wider as the last player to act.
Split the job of defending with the other players in the pot.
Lead into the field when the board favours your range.

Read first: What changes with three or more players · Advice, not a lock: every lesson opens.

Concepts used: Multiway pots, MDF and alpha

Players behind you

Facing a bet with another player still to act behind you is harder than closing the action. A call can be raised behind you, and a hand that is ahead of the bettor can still be behind the player who has not acted. So defend tighter when someone can still act after you, and wider when you are last.

The defence is shared. Against a bet of three quarters of the pot, 3 into 4, alpha is 3 / 7, about 42.9%. Two defenders sharing it equally each defend about 34.5%, much less than the 57.1% one defender would need.

Leading into the field

Out of position in a multiway pot, a lead can make sense where the board hits your range hard: low and connected boards when you defended from the blinds. Lead with strong hands and strong draws, and check the rest to the raiser.

In Rail

Your own multiway hands carry the analysis' multiway facts: each opponent's narrowed range, your equity against the field, the MDF split and the flags. The sums below drill the split itself.

Rail's flop library is heads-up. Multiway flops are read by the heuristic and the MDF split, with facts and flags but no solver grade.

Rules of thumb

Defend tighter with players still to act behind you.
Call wider when you close the action.
Share the defence: each player defends less than heads-up.
Lead only with strong hands and strong draws on boards that favour your range.

When they break

Against a bettor who only bets strong hands into a crowd, fold more.
When the player behind is very passive, defend almost as if you closed the action.

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

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: 5 of 6 right

Six sums: how much each player must defend against bets of different sizes.

Exercise 2

Optional

Your own multiway decisions facing a bet, on any street, the costliest first.

Module F5 review · Multiway flops

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.