They should've been easy too, if I didn't mix them up a little bit! An x amount of 3x3 squares is 'traded' between the two 9x9 squares. (For example, the upper-left 3x3 square in 9x9 square one could've been traded with the upper-right 3x3 square in 9x9 square two.)
In a 9x9 square aren't any 3x3 squares switched. The only way to switch 3x3 squares is/was to 'trade' them with the other 9x9 square.
3x3 squares aren't turned, nor mirrored. The only squares that moved are 3x3 squares, so 1x1 squares didn't move themselves.
Your task: Remake the correct Sudoku's (So switch the 3x3 squares, following the rules) and solve them. Send the correct Sudoku's and the answers to me by using the EF Forum Private Message system. There's more than one solution, but you only need to find and send me one.
Upload your final answer on a filehosting website(i.e. imageshack), send it to me together with your username.
Good luck and happy puzzling.
Edited by tripsis, 18 July 2011 - 09:26 PM.