4 new improvements:
- I've fixed a bug in mates of more than 4 moves. Now if the engine plays an inferior line and let you mate in less then the expected numer of move the solution is correctly evaluated.
- Also another bug in evaluating checkmates has been solved, sometimes was considered correct a solution that leads to stalemate or to be mated.
- Now are showed castling moves available for each colour on the applet; O-O: king side, O-O-O: queen side
- If the last opponent move give you a chance to an en passant capture the square on wich you can capture is shown