Easy board
Structure hint
Easy · 6 dominoes · 12 cells. Start by checking the smallest constrained regions: R1: Sum = 10; R2: All equal; R3: Sum = 1; R4: No rule.
Domino set
Available dominoes: 5-3, 3-1, 2-5, 2-3, 5-1, 6-5.
Full solution
Easy board
Canonical placement by domino order: 5-3 at (4,2)-(4,1); 3-1 at (4,0)-(3,0); 2-5 at (0,2)-(0,1); 2-3 at (0,3)-(1,3); 5-1 at (0,0)-(1,0); 6-5 at (3,3)-(4,3).
