Zen Sumplete — Free Number Logic Puzzle Online

About Zen Sumplete

Zen Sumplete is a number logic puzzle where you delete numbers from a grid so that each row and column adds up to a target sum shown on the edges. Keep some numbers, delete others — every row and column must hit its exact target. Faster solves with fewer errors score highest and rank you in your city leaderboard.

💡 Tips & Strategy ▾

Start with the smallest targets. A row with a target of 5 has very few possible combinations. Solve the constrained rows first.
Use intersections. If a number must be kept for its row, check whether that affects the column it sits in.
Work backwards. Calculate the total of each row and subtract the target. The difference is what you need to delete.
5x5 is the fastest for leaderboard. Smaller grids reward accuracy under time pressure.

Frequently Asked Questions

What is Sumplete?

Sumplete is a number logic puzzle where you delete numbers from a grid so each row and column sums to a target value. It combines elements of Sudoku, Kakuro, and Hitori.

Is Zen Sumplete free?

Yes. Completely free with unlimited puzzles and a daily challenge. No subscription needed.

How is this different from Sudoku?

In Sudoku you place numbers. In Sumplete you delete them to hit target sums. It tests mental arithmetic and logic simultaneously.

What grid sizes are available?

5x5 for beginners, 7x7 for intermediate, and 9x9 for expert. Each size has a daily challenge and unlimited random mode.