Medium Killer Sudoku

Medium Killer Sudoku — around 20 givens. Cage sums increasingly narrow down combinations before row and column constraints kick in; keep a running list of each cage's possible combos.

Medium puzzles start to need basic pencil-mark techniques: naked pairs (two cells in a unit that can only be two specific digits) and hidden singles across wider units. A typical solve runs 7–15 minutes.

Available packs

Or jump to a difficulty