ArithBlock

ArithBlock: A Puzzle of Logic & Numbers If you enjoy the focused logic of puzzles like Sudoku, ArithBlock offers a fresh twist. Place numbered blocks on the board so that every square sums exactly to 10. It’s simple to learn, yet surprisingly deep. How to Play - Switch between available blocks to plan your move. - Rotate a block for the perfect fit. - Drag it onto the board. - Each block’s numbers add to the numbers already on the board. - The sum in any cell cannot exceed 10. - Fill the board to win! Free to Start - Play for free with puzzles of up to 5 blocks. - Unlock puzzles with 6–10 blocks for a one-time purchase. - No ads. Features - Easy to Learn: Understand the rules in seconds. - Challenging to Master: Spatial and numerical thinking are both required. - Endless Variety: A new solvable board is generated whenever you want. - Adjustable Difficulty: From quick, casual puzzles to deep, multi-block challenges. - Perfect for Short Breaks: Each puzzle is a compact mental workout. A clean, ad-free puzzle experience—simple to pick up, hard to put down.