-Here are some solutions to problems posed by IBM in their "Ponder This" series. -http://domino.research.ibm.com/Comm/wwwr_ponder.nsf/pages/index.html
-Each month IBM posts a puzzle up on the web and they invite people to submit solutions. -Very often the solutions can be obtained by writing some code. -In this project here on github some code is presented that is used to find solutions.