05/10/05 tough puzzle from sudoku.com.au

This one is equivalent to 05/09/24. Proof :

1) Take 05/09/24 grid. Now move rows 123456789 (1=bottom!) on new positions 987456321

2) Now move columns abcdefghi(a=left!) on new positions acbfedhgi. Do you begin to feel like déjà vu?

3) All that's left now is to renumber last grid's values 123456789 on 859427136 and you get exactly 05/10/05's puzzle.

4) Now applying the same "dictionary" (changing rows, columns, values) to proof of 09/24 you will mechanically get a proof of today's. Try it !

See more illustrated examples of equivalence between puzzles : 09/26,09/29, 10/02, 10/03, 10/04.
See equivalent puzzles :
09/24 , 09/25

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