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Sudoku, potatoes and crossnumber's biggest secrets finally revealed in our spring 2025 issue. Plus all your favourite columns!

Pre-order your copy now!

Sus Mafia strategies, LMS president Ulrike Tillmann, and Bae's theorem ❤️ all feature in our spring 2021 edition. Plus all your favourite puzzles & columns.

Behind today's door... A binary magic card trick!

Solve the puzzles that appeared in Issue 04.

When people do science for money…