Sudoku Puzzles 6x6 grid medium to hard

200 Sudoku puzzles 6x6 gridMedium to hard difficulty levelTwo puzzles per pageThis smaller 6x6 grid is quite a good size for solving the puzzles while on travelMost puzzles with regular (square) sub-gridsA few puzzles have irregular (or jigsaw) sub-domainsFor more variety the last 10 puzzles have additional constraints like in Sudoku-X or Sudoku-diagonal, for both square and jigsaw sub-domainsBoth symmetric and not symmetric jigsaw sub-domains. Puzzle with both symmetric and non-symmetric distribution of the initial clues in the puzzle's gridNumber puzzlesMath puzzles