Sum Sudoku
Classic Sudoku plus arithmetic! Specific highlighted rows, columns, or regions must sum to target values.
Rules:
- Each row must contain 1-6 (no repeats)
- Each column must contain 1-6 (no repeats)
- Each 2×3 block must contain 1-6 (no repeats)
- NEW: Purple-highlighted cells have sum constraints (see below)
Sum Constraints:
Row 2: Must sum to 18
Row 4: Must sum to 15
Column 1: Must sum to 20
Column 4: Must sum to 21
Fill cells to satisfy both Sudoku rules and sum constraints!