If you like this sort of bit-level puzzles, this is a nice book: http://www.amazon.com/Hackers-Delight-Henry-S-Warren/dp/0201914654/ http://www.amazon.com/Hacke

If you like this sort of bit-level puzzles, this is a nice book: http://www.amazon.com/Hackers-Delight-Henry-S-Warren/dp/0201914654/ http://www.amazon.com/Hackers-Delight-Henry-S-Warren/dp/0201... -- probably the only book at such a low level I remember buying in many years.