Opening range compass
Enter four cards, choose a stack depth, and the compass shows all three opening lanes at once. You get a clear open, mix, or fold read for each seat, plus the reason the best lane wins.
Interactive tool
Use standard card codes like Ah, Ks, Td, or 7c. The compass scores the hand across early, middle, and late position at the stack depth you enter, then explains which lane actually survives.
Enter four distinct cards. Example: As, Ks, Qd, Jd.
Enter four distinct hole cards to activate the compass.
Enter the stack in big blinds. Deeper stacks reward nutty, connected hands more often.
The same hand can move from fold to mix to open as the stack changes.
Use the presets to compare seat pressure across hands with different structures.
Live read
The compass will compare the seat lanes, explain the stack fit, and point you to the right free study page.
Enter cards to see which opening lane is strongest.
Enter a hand to see whether early position can support it.
Enter a hand to see whether the balanced lane is enough.
Enter a hand to see whether late position unlocks the open.
The strongest lane usually points to one guide for structure and one tool for a faster check.
Common shapes
The point is not to memorize a chart. It is to recognize when a hand keeps enough nut paths alive to open, when it only mixes, and when the stack and seat make it a clear fold.
Connected and suited
Double-suited rundowns and broadway hybrids often move up in value as the seat gets later and the stack gets deeper because more streets can still matter.
Pair-led value
High pairs and two-pair starts can still open, but they lean harder on shorter stacks, less pressure, and a board that does not punish them immediately.
Ragged and rainbow
When the ranks are far apart and the suits do not cooperate, the compass usually sends the hand back to the starting-hands guide instead of forcing an open.
Study notes
The best workflow is simple: check the lane here, then verify the structure in the evaluator or the opening-ranges guide before you put more money in.
Early lane
Early position trims the range the hardest, so the hand needs stronger suit coverage, better connectivity, or a stronger made-hand base.
Middle lane
Middle position often becomes the hinge point where a hand can still open, but only if the stack depth and board coverage are good enough.
Late lane
Late position is where strong connectivity and suit leverage matter most because the hand can keep more future boards live.