Patches #73 Solving Notes
First read: Patches #73 starts with 11 clue cells on a 7×7 board. Begin with the fixed clues at r1 c6, r2 c3, r2 c7 instead of guessing color groups from empty space. Those clue cells are the safest anchors because every solved region must keep exactly one clue area and still cover the whole board.
Main anchor: The strongest number anchor is the 6-cell clue at r2 c7. Large regions usually have fewer safe placements, so this clue is a better first test than a tiny patch. After reveal, check it against Region 7, which should form the 6-cell vertical strip from r2 c7 to r7 c7.