On Monday I unveiled the new hold’em pot equity calculator that supports hand ranges. Today I added a feature that lets you weight your hand ranges, making the tool a whole lot more flexible.
To weight a range, simply add a colon plus an integer between 1 and 100 after your range unit. From the documentation:
Finally, you can weight any unit within a range by appending a colon and then an integer from 1 to 100. The number represents a percentage of the total times dealt a hand in the unit. For example, the range TT+,AK,JTs:10,T9s:10,98s:10 might represent someone’s 3-betting range preflop. They’d reraise 100 percent of the time with any pair tens or better or AK (TT+ is equivalent to TT+:100), and they’d also raise 10 percent of the time they were dealt JTs, T9s, or 98s. These weights allow you to better simulate actual hand ranges.
The colon+number applies only to the unit it sits next to, not any other units separated by commas. And if a hand is represented by multiple units, only the highest weight is used. For instance, for AKs:80,**s:30,**:5, AhKh has a weight of 80, Jd4d has a weight of 30, and 3c2h has a weight of 5.
To see how this new functionality works, try out these examples:
- TT against AhAs,55:17. The weight of 17 percent on the 55 balances out the fact that only one combination of aces is used, and the result is nearly 50/50.
- TT+,AK,JTs:10,T9s:10,98s:10 against 88
- TT+,AK,JTs:10,T9s:10,98s:10,**:1 against 88. Adding a 1 percent chance of bluffing with every random hand changes the equity significantly.
Note also that weights matter only if two or more different weights are used in the same range. A range of AA:1 is identical to a range of AA:42 or simply AA. However, AA:1,JTs:80 is very different from AA:42,JTs:80, which is very different from AA,JTs:80.
A few bugs probably slipped through, so if you find one, please let me know in the comments.
Tags: hand ranges, hand weights, poker, pot equity calculator, pot-equity