Make four complete king-to-ace runs, one in each suit. The finished runs stay in the tableau; there are no ace-based foundations.
Your six of hearts needs the seven of hearts
Build down by suit. Any face-up card can move with all the cards resting on it, even when that group is out of order. A six of hearts carrying unrelated cards can therefore go onto the seven of hearts. Empty columns accept only kings or king-led groups.
This version deals all 52 cards into seven columns, with eight cards hidden. There is no three-card reserve or later stock deal.
To uncover a hidden card, trace a route for the group above it to its exact suited receiver. Before moving a king into an empty column, check which useful cards it will carry along—and whether you can release them afterward.