You are given a position and you should find the best move. This move can be either a defending or a winning move. Some moves are very subtle and difficult to find, making this challenge useful for very experienced chess players as well. For players who want more challenge, try blindchess
Solution is Qxc5. White has to take the bisshop on c5 to get an equal position. This is an example of a rather simple exercise.
Solution is b5. This will give black an equal position. Other moves give white a better position, so this is the best move.
Example 4Sometimes more moves should be done. This is an example where three move should be found. Finally white has perpetual and can make a draw.