Range Evolution
Opening ranges in seat order, one missing. Which shape fills the gap? Learn how ranges widen smoothly from early to late position.
Which range fills the gap?
How to play
Read the chain. Opening ranges from under the gun to the button, one blanked.
Judge the width. The gap must be wider than its left neighbour, tighter than its right.
Pick the fit. Choose the option whose coverage completes the progression.
Because ranges only widen as position improves, the missing shape is pinned between its neighbours. Count roughly how much of each option is lit and slot in the one that fits the trend.
Why think in progressions
Memorising six separate charts is hard; understanding one smooth widening is easy. Once you see ranges as a progression you can reconstruct any seat from the ones around it, and you read opponents faster because you know exactly how much wider each later seat plays. Build the ranges directly in the Range Trainer and study the theory in preflop & ranges.
Frequently asked questions
What is Range Evolution?
You see opening ranges laid out in seat order — under the gun through the button — with one missing. Pick the range shape that fills the gap. It trains the fact that ranges widen smoothly as position improves.
How do ranges change by position?
They only ever get wider as you move later. Each seat opens everything the earlier seat did plus more marginal hands. So a missing range must be wider than the seat before it and tighter than the seat after — that constraint tells you the answer.
Why learn the progression?
Seeing ranges as a smooth progression, not six unrelated charts, makes them far easier to memorise and to read. You can reconstruct any seat's range from its neighbours.
Are these standard ranges?
Yes — the widely-taught 'GTO-based' 6-max opening ranges used across the trainer.
Is it free?
Yes — free, no signup, runs entirely in your browser.