- Teaching Logic using Group Puzzles
- Solving Group Logic Puzzles
- Puzzle Difficultly Levels Explained
- Detailed instructions for working a type 'Sudoku-by5' group puzzle
- Detailed instructions for working a type 'Sudoku-Xtreme' group puzzle
- Detailed instructions for working a type 'Education-Xtreme' group puzzle
- Detailed instructions for working a type 'HyperSudoku-by5' group puzzle
- Detailed instructions for working a type 'HyperSudoku-Xtreme' group puzzle
- Eight TournamentPlus Sudoku-by5 Puzzles (numbers 1-8)
- Eight TournamentPlus Sudoku-Xtreme Puzzles (numbers 9-16)
- Eight TournamentPlus Education-Xtreme Puzzles (numbers 17-24)
- Eight TournamentPlus HyperSudoku-by5 Puzzles (numbers 25-32)
- Eight TournamentPlus HyperSudoku-Xtreme Puzzles (numbers 33-40)