Thanks for the great puzzles. I'm not usually much into Sudoku, but these were great fun. (I did poorly on the test, but solved the rest later.)

By the way, the Anti Knight Disjoint is solvable without the "disjoint" constraint. Yes, finding this out was an accident.

Cheers
Rob

I didn't see the symmetry of the 150 point puzzle but I was able to solve it logically. For instance you can see from the first diagram of Rishi's, that R2C8 is a 5 because the anti-knight moves cancel out the possibilities for 5 being in any other spot on the diagonal.

Edited by WaterlooMathie 2011-02-15 8:43 AM

Hi, Is there anywhere password to get the PB?

regards

Please login in the Double Delight page and you should see the password.