157 Large Print Calcudoku

157 Large Print Calcudoku puts one big, clear puzzle on every page, so you can concentrate on the maths and the logic instead of squinting at small print. Each book holds 157 Calcudoku in large print, with room to work.

There are three books. Novice runs from Easy to Hard and is a comfortable place to start. Adept runs from Medium to Very Hard, for solvers who already know the rules well. Master runs from Hard to Extreme, for experienced solvers who want large print without giving up a challenge.

The rules are the same as in all Calcudoku: every row and column holds each number once, and every outlined cage must reach its target using +, −, × or ÷. If you're new to the puzzle, our solving guide explains the rules and the main techniques with worked examples.

Large print suits anyone who prefers bigger numbers and more space, whether for comfort, for eyesight or simply for a more relaxed solve. If you'd rather have more puzzles per book in a standard size, see 600 Calcudoku.