Saturday (Gapped Non Consecutive, Gui Yong)
Sunday (Anti-Knight, Seungjae)
Monday (Triangle Sums, Zoltán Horváth)
Tuesday (Frame, Prasanna)
Wednesday (Non Consecutive Anti-Knight, Bastien) - this is a very powerful combination of constraints!
Thursday (Renban Groups, Jan Zvěřina)
As always, you can play with a day's delay on the sudokucup.com servers.
This week's puzzle is a difficult diagonal sudoku. Probably too hard for competition. Enjoy!
#254 Diagonal Sudoku – rated hardAll puzzles © Tom Collyer 2009-13.