TRY THIS: Blindfold chess!

I'm just a simple soul and I find it very difficult (or should i say: impossible!) to master blindfold chess beyond two moves (...) so it's fascinating to me how some players manage to play chess without board or pieces. Follow the link but don't be disappointed when you don't succeed at first. Keep trying!

The difference between a Chess Problem and a Chess Puzzle

A chess problem, also called a chess composition, is a puzzle set by somebody using chess pieces on a chess board, that presents the solver with a particular task to be achieved. For instance, a position might be given with the instruction that white is to move first, and checkmate black in two moves against any possible defense.

The term "chess problem" is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzles or tactical exercises on the other.

Problems can be contrasted with tactical puzzles often found in chess columns or magazines in which the task is to find the best move or sequence of moves (usually leading to mate or gain of material) from a given position. Such puzzles are often taken from actual games, or at least have positions which look as if they could have arisen during a game, and are used for instructional purposes.