This is more logical than retreating the bishop to a4.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. d2d3  4... f8c5  5. c2c3  5... e8g8  6. c1g5 [%c_effect g5;square;g5;type;Interesting;persistent;true] A rare move, certainly well studied by Lei's team. This type of pin, once considered dubious, is now an interesting try in the Ruy Lopez and also in the Italian. 6... d7d6 Played after long thought, indicating that Ju was surprised by 6.Bg5. 7. b1d2  7... a7a6 