Narrow (the field)
Definition of narrow (the field)
"Narrow the field" means to reduce the number of players in a hand. When a player rolls an iso-raise, it will be said that he is making that game for "narrow the field". An iso-raise is when a player rolls raise preflop (raise preflop) after 1 or more limpers. A limper is a player who simply pays the big blind preflop rather than raising as most players do. So, if the player in the UTG position pays his blind, that a player with a cutoff also goes for a limp, the player on the button can iso-raise the players for narrow the field. It is called iso-raise because its purpose is to isolate itself with one player and not to play a multiway hand. The iso-raise will also be bigger than a standard raise.
The advantages of narrow (the field)
If you're the type to raise preflop to 3bb, your iso-raise may be 3bb + 1bb by limpeur. In other words, to use our example above, 2 players have limped, so if the button makes an iso-raise, it will do 3bb + 2bb so it will raise to 5 big blind. It could have made it bigger if it was out of position. The advantage of the iso-raise is that it will clean up the number of players present at the flop (narrow the field). The more players in the hand, the lower our equity will be. By doing an iso-raise (bigger than a classic raise), either everyone folds and you win the blinds, or you find yourself (most of the time) in a one-on-one position with the initiative (advantageous position).