The Logical World of Puzzles

This blog deals with grid-based puzzles and the various types of logic and ideas used to solve them. It also contains notices, information and results about various puzzle and sudoku championships across the globe.

Puzzle No.150

Puzzle: Untouchable Sudoku
Author: Rohan Rao

EXAMPLE:

SOLUTION:

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1 comment:

Rohan RaoJuly 15, 2009 at 10:37 PM
How long did you take to solve it?
Post your timings here.
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About Me

Rohan Rao: Mumbai, Maharashtra, India; I am 22yrs old, doing my post-graduation in Applied Statistics at IIT-Bombay. Puzzles is my passion and I won the Indian Sudoku Championship in 2010, 2011, 2012, and the Indian Puzzle Championship in 2010, 2011, 2012. I represented India at the World Championships in 2008, 2009, 2010, 2011, 2012. Chess has always been my favourite game and I achieved my FIDE Elo rating in chess in Feb-2005. I am a member of the high-IQ Mensa organisation. I love creating puzzles and have organised many puzzle and sudoku championships.

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