Puzzle rules
Tiled Sudoku
Treat every merged tile as one logical cell. Each physical row, column, and outlined 4×4 block must contain 1–9 once. Across the full grid, the nine top-left merged tiles, nine centered merged tiles, and nine bottom-right merged tiles must also each contain 1–9 exactly once.
How to solve
Complete rules
Goal: Complete the Tiled Sudoku with digits 1–9. Rules: - Every merged tile is one logical cell, and all physical squares belonging to that tile share one value. - Every unmerged square is one logical cell. - Each outlined 4×4 block contains nine logical cells and must use digits 1–9 exactly once. - Each physical row and column must use digits 1–9 exactly once when repeated squares from the same merged tile are counted as one logical value. - The nine top-left merged tiles across the grid must contain digits 1–9 exactly once. - The nine centered merged tiles across the grid must contain digits 1–9 exactly once. - The nine bottom-right merged tiles across the grid must contain digits 1–9 exactly once. - Given digits are fixed.