Diagonal Sudoku [DIAG-4-009P]
Asterisk Sudoku [ASTE-3-008P]
Frame Sudoku [FRSU-4-004P]
Little Unique Killer Sudoku [LUKS-3-008P]
Anti-King Sudoku [KING-4-009P]
Center Dot Sudoku [CDSU-2-007P]
Consecutive Sudoku [CONS-4-009P]
Rossini Sudoku [ROSU-3-008P]
Kropki Sudoku [KROP-2-002P]
Girandola Sudoku [GIRA-3-008P]
Skyscraper Sudoku [SKSU-4-009P]
Anti-Diagonal Sudoku [ADSU-4-009P]
Classic Sudoku [SUDO-3-008P]
Even-Odd Sudoku [EOSU-4-009P]
