[Retros] Chessgame Sudoku

[Otto Janko]

Hi there,

I would like to draw your attention to a new puzzle genre called "Chessgame
Sudoku". Chessgame Sudoku is a hybrid between Retrograde Analysis and
Sudoku, invented by Manus Hand.

http://www.manushand.com/chessgame

Best Regards,

-- Otto Janko [mailto:otto at janko.at] [https://www.janko.at]
-- They who can give up essential liberty to obtain a little temporary 
-- safety, deserve neither liberty nor safety. [Benjamin Franklin]