This app ships eight raise-first-in (RFI) nodes — one for every seat except the big blind, which never opens. Walking them in order from UTG to the small blind makes the positional widening from the previous topic concrete: each seat's combo-weighted opening percentage below is computed live from the exact range data the Trainer and Play mode grade against, not a transcribed table that could drift out of sync with it.

Two patterns to notice. The percentage climbs almost monotonically from UTG to the button — the earliest seat plays the game's tightest range, the button the widest. And the open size shrinks in big-blind terms as position improves: UTG opens bigger (more likely to meet a real hand, so build a bigger pot with the good ones), the button smaller (steal-sized, since it folds out the field most of the time anyway). The small blind is the outlier — wide and comparatively large, because it's already posted and now opens against only the big blind, a near-heads-up spot.

Use the Position topic's widget to see any one of these ranges as a full 13×13 grid.