- Teaching Logic using Group Puzzles
- Solving Group Logic Puzzles
- Puzzle Difficultly Levels Explained
- Detailed instructions for working a type 'Sudoku-8' group puzzle
- Detailed instructions for working a type 'Sudoku-8-X' group puzzle
- Detailed instructions for working a type 'HyperSudoku-8' group puzzle
- Detailed instructions for working a type 'Sudoku-8up' group puzzle
- Detailed instructions for working a type 'HyperSudoku-8up' group puzzle
- Detailed instructions for working a type 'SuperSudoku-8' group puzzle
- Fourteen Difficult (DiffLev 9-10) Sudoku-8 Puzzles (numbers 1-14)
- Sixteen Difficult (DiffLev 11-12) Sudoku-8 Puzzles (numbers 15-30)
- Sixteen Difficult (DiffLev 9-10) Sudoku-8-X Puzzles (numbers 31-46)
- Sixteen Difficult (DiffLev 11-12) Sudoku-8-X Puzzles (numbers 47-62)
- Sixteen Difficult (DiffLev 9-10) HyperSudoku-8 Puzzles (numbers 63-78)
- Sixteen Difficult (DiffLev 11-12) HyperSudoku-8 Puzzles (numbers 79-94)
- Sixteen Difficult (DiffLev 9-10) Sudoku-8up Puzzles (numbers 95-110)
- Sixteen Difficult (DiffLev 11-12) Sudoku-8up Puzzles (numbers 111-126)
- Sixteen Difficult (DiffLev 9-10) HyperSudoku-8up Puzzles (numbers 127-142)
- Sixteen Difficult (DiffLev 11-12) HyperSudoku-8up Puzzles (numbers 143-158)
- Sixteen Difficult (DiffLev 9-10) SuperSudoku-8 Puzzles (numbers 159-174)
- Sixteen Difficult (DiffLev 11-12) SuperSudoku-8 Puzzles (numbers 175-190)