MERGE RULES
It’s quite simple. There are two rules:
RULE #1: All merge combinations must be rectangular by nature
- This means no zig zags, “L” or “S”-shapes, snaking, etc
RULE #2: You cannot merge any rectangles narrower than 2:1
- This means the rectangle’s width can’t be more than 2x longer (in terms of tiles) than the height, and vice versa