#30: Sudoku X
Rules: Place a digit from 1-9 into every cell such that every digit appears in every row, column, thickly outlined 3x3 region, and marked...
#30: Sudoku X
#29: Classic Sudoku
#28: Killer Sudoku
#27: Classic Sudoku
#26: Valentine's Day Puzzle #2
#25: Valentine's Day Puzzle #1
#24: tea day!
#23: firefly
#22: Sudoku X
#21: collection
#20: Icewalk
#19: Pipelink
#18: X-Sums Sandwich Sudoku
#17: Extra-Regions Sudoku
#16: scarves
#15: Ring-Ring
#14: Aqre
#13: stimulus
#12: synesthesia
#11: streetlamp