This ought to keep some of you guys busy.
1000 positions distilled from the short games of chess by Irving
Chernev, with Answers! Look at the puzzle, and then click "show answer"
and play through the moves. This constitutes much work.
"http://www.academicchess.com/images/chessviewer/1000positions.htm"
For an index of many more problems, click he
http://www.academicchess.com/play/indexdiagrams.shtml
But these will be changing a lot in the next few months.
http://www.academicchess.com
Best Learning Chess Site on the Planet