Please read the post titled Betting – Structured Limit before reading this post. The betting is very similar.
We will again be playing Texas Hold’em with 4 rounds of betting. Pre-flop, Flop, Turn, and River. In Spread Limit flop games there is a Small Blind, a Big Blind, and a range of bet sizes with a minimum and a maximum, hence the term spread. Just like Structured Limit, the betting is usually capped at one bet and 4 raises. Sometimes the max is 3 raises. This game will be $2-$10 spread. The Small Blind is 1/2 the Big Blind, which is equal to the lowest bet size.
Under The Gun is first to act after the blinds of $1 and $2, respectively. They can either fold, call $2, or raise to anywhere between $4 and $10, inclusive. Assuming they make a min(imum) raise to $4, UTG+1 now has the same options. The can fold, call $4, or raise from $2-$10 for a total bet of $16 – $14. Once a raise has been made, this becomes the new minimum raise for that round.
Let’s start again with blinds of $1 and $2. UTG makes a full raise to $12 preflop. Since they raised the max, and any future raises this round must be at least the same amount, this round is effectively structured limit and all bets and raises are $10. On the next round someone can again bet anywhere from $2 – $10.