Tower of Hanoi, Rubix Cube and any other little puzzle games?

[DJLad15]

I'm wanting to improve my problem solving ability, so I've been recently started having a go at the tower of hanoi and the rubix cube - along with looking at the algorithms and stuff like that for them.
So I was wondering if there are any other puzzle toys/games I could have a go at?

[firedraco]

Those sliding puzzle games with numbers on them?

http://en.wikipedia.org/wiki/Sliding_puzzle

[Grey Wolf]

Go to Amazon^[*] and search for "Logic Puzzles"

[*] Other book stores available