Puzzle rules
Symbol Rooms
Place 1, 2, and 3 once in every row, column, and bold irregular room. Equal numbers cannot touch, even diagonally. Each N×N grid has N connected rooms of N cells; all remaining cells stay empty.
How to solve
Complete rules
Goal: Place 1, 2, and 3 throughout the grid. Rules: - Every row contains 1, 2, and 3 exactly once. - Every column contains 1, 2, and 3 exactly once. - Every bold irregular room contains 1, 2, and 3 exactly once. - An N×N grid contains N connected rooms, each containing N cells. - Equal numbers cannot touch horizontally, vertically, or diagonally. - Different numbers may touch. - All remaining cells stay empty. - Given numbers are fixed. - Generated puzzles use an irreducible clue set: removing any one given creates multiple solutions.