The inventor of quadruple clue sudoku
Inviato: ven 9 ott 2009, 18:55Henry Kwok is the inventor of the variant
http://www.gamepuzzles.com/henry.htm
I regret I didn't meet him when I was in Singapore.
http://www.gamepuzzles.com/henry.htm
I regret I didn't meet him when I was in Singapore.