The Blogspot Chess Game Viewer can also be used to display chess puzzles of which the solution has to remain hidden as long as the right answer hasn't been given.

The chess problem below from the game Aljechin - Ricondo is a nice example. After three attempts or after making the right move the solution will become visible. You can make a move by clicking at a piece followed by clicking the target square.
Please note that it is also possible with this game viewer to add a description of the initial position at the right side of the board.


The solution will also be revealed by clicking on show solution.