Printable Hard Sudoku

This week's set of six hard puzzles (rated SE 2.5–3.4). A new set appears every Monday. Fold the page in half for two sittings, or hand three puzzles to a rival and race.

#1 32 clues · SE 3.2

64512751943983212816334982736237

#2 28 clues · SE 2.8

4262517859371258463178142793

#3 28 clues · SE 2.8

4682241915288961278545641723

#4 26 clues · SE 2.5

84169522938749382852791734

#5 28 clues · SE 2.6

1733496947839487892425679261

#6 28 clues · SE 2.5

6972634374283251948199642716

Other difficulties: Easy · Medium · Expert — or try the daily print sudoku.

Stuck on one of these? The Sudoku Academy walks through every solving technique from naked singles to forcing chains, with examples pulled from real games.