Summandum: 250 Hard Sum Puzzles for Adults

Description

Summandum – 250 Hard Sum Puzzles for Adults

Push your logic to the limit with the ultimate number challenge!

Summandum takes puzzle solving to the next level. Each grid hides a web of sums that demand precision, patience, and strategic thinking. Place the edge numbers carefully and use advanced logic to uncover the unique solution. Perfect for experienced solvers who crave a serious mental workout.

✅ 250 hard-level puzzles designed to test your logic and focus
✅ Grid sizes: 4×4, 5×5, 6×6, 7×7, and 13×13
✅ Deeply logical and rewarding gameplay for true puzzle enthusiasts
✅ Large, clean design for comfortable solving even in complex grids
✅ Solutions included for every puzzle
✅ Ideal for Sudoku and math logic fans seeking a tougher challenge

Exercise your brain, sharpen your focus, and enjoy the thrill of solving the toughest sums!