Interactive Problems (Games) are reanimated

Hi Friends!

In short: four interactive problems should work again. (however I've tried only say-100 and wumpus so feel free to report if anything is wrong)

So I invite you to play with them and have fun!

In more details: these problems require one to write program interacting with server via http. In this way the solution and server can make moves (or steps) like playing real game. More than two years ago they ceased to work (I think I hadn't read thoroughly terms of use of sourceforge servers when placed them there - and they were removed).

It is a specific trouble of choosing at which server to place them so they won't endanger main site in case of misuse or abuse...

Recently I've got an idea they may be somewhat rewritten so that they could be deployed at google's appengine. This seems to work, so I've updated the urls in the problem statements...