Reptar7
Visionary
Silver Level
Triple range merge was explained like -
"You have three ranges - total air, showdown value hands, nut hands.
Some bets (e.g. c/r shoving a turn card on a draw heavy turn) can be either SDV hands, total air bluffs or nut hands and so you have merged all three ranges which makes it difficult for villain to play against you."
As Baudib says, I don't think this really exists, and if it does it only in the highest level of the game such as what you watch on TV. That is my understanding of it anyway. He has been giving you good advice so far, my little bit of advice would be worry less about irrelevant topics at 4NL and just play a strong range in position and value bet hard.
Who explained that?
I found this article about merging ranges: http://www.bluffeurope.com/poker-news/en/poker_clinic/Triple-range-what-_10490.aspx
(The guy is asked about Triple Range Merge and then proceeds to just talk about merging ranges which is kind of annoying)
And then here is an AEJones post about merging ranges which I really like: http://archives1.twoplustwo.com/showflat.php?Cat=0&Number=10167797&page=0&fpart=1&vc=1
*patiently waiting on someone to yell about how they hate the terms polarization
Also, why would you hate polarization? http://en.wikipedia.org/wiki/Gravity_of_Earth