Sudoku 365 medium Large Format: difficulty in 8.5x11 format Two structured puzzles per page for adults, seniors and gift giving (sudoku advanced)

Sudoku 365 Extreme large Format: challenges in 8.5x11 format Two intense grids...

365 Extreme Sudoku — Deluxe Edition: Very Hard Puzzles Large Format 8.5x11...

Sudoku 365 easy large Format: puzzles in 8.5x11 format Two clear grids...

Sudoku 365 Mixed Large Format: puzzles from easy to hard in 8.5x11...