Group Puzzles (Sudoku Generalized) TournamentPlus Sudoku-by5 Logic Puzzles, Volume 1.
  1. Teaching Logic using Group Puzzles
  2. Solving Group Logic Puzzles
  3. Twenty TournamentPlus (DiffLev 30-32) Sudoku-by5 Puzzles (numbers 1-20)
  4. Twenty TournamentPlus (DiffLev 33-35) Sudoku-by5 Puzzles (numbers 21-40)
  5. Twenty TournamentPlus (DiffLev 36-38) Sudoku-by5 Puzzles (numbers 41-60)
  6. Twenty TournamentPlus (DiffLev 39-41) Sudoku-by5 Puzzles (numbers 61-80)
  7. Twenty TournamentPlus (DiffLev 43-45) Sudoku-by5 Puzzles (numbers 81-100)