Patches #160 Full Analysis
First read: Patches #160 starts with 6 clue cells on a 6×6 board. Begin with the fixed clues at r2 c4, r2 c5, r3 c3 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 best anchor is the 4-cell square clue at r5 c2, not a random corner. This clue is useful because a strict shape has less room to wiggle than an open patch. After reveal, check it against Region 5, which should form the 2×2 square block from r5 c1 to r6 c2.