Su Doku

OK.. My sister-in-law Shirley and Anna have gotten me hooked on Su Doku. It's a simple game of logic. Here's what a basic puzzle looks like:



The basic point of the game is to fill in all the spaces with the numbers 1 - 9. All 9 numbers must be used in each row (vertically and horizontally) and each block of 9 numbers must contain all of the numbers 1 - 9. Here's the answer to the puzzle above:




So, Anna got me 2 Su Doku puzzle books for my birthday. One book is mild and the other is spicy. The mild ones are fun and easy. The spicy ones make me want to pull my hair out. Here's one example that seems to be deceptively simple on the surface, but took me a long time to solve:



Print it out and try to solve it....