an Entity references as follows:
The Classical Variation of the Scotch Game is a chess opening that begins with the moves: 1. e4 e52. Nf3 Nc63. d4 exd44. Nxd4 Bc5 White has several fifth move options, including 5.Be3, 5.Nxc6, 5.Nb3 and 5.Nf5.