EXCALIBUR E714 Einstein Chess Wizard. Take on the Einstein Cosmos in the battle for chess supremacy. Use the built-in virtual chessboard to play with or without pieces. Choose from 73 power levels up to a strength rating of 1750. Play with or without chess pieces. Book-opening trainer teaches the most popular openings, such as the Ruy Lopez and Sicilian Defense. Rating feature tracks your improvement. Checkmate-trainer tutors you to solve checkmate problems.