1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. d2d3 The two chess players continue the theoretical battle in the Ruy Lopez that occurred in their dramatic match for the world championship. 6... b7b5  7. a4b3  7... d7d6  8. c2c3  8... e8g8  9. a2a4  9... c8d7  10. b3a2 [%c_effect a2;square;a2;type;Interesting;persistent;true] A very rare move, but one once played by GM Peter Svidler, a great expert in the Ruy Lopez with both colors. The idea is to anticipate the typical move 10...Na5 followed by c7-c5, which can occur after 10.Nbd2. 10... h7h6  11. h2h3  11... f8e8  12. c1e3 A normal Spanish position on move 12 without any specific theory. This is more or less what white players seek in the difficult art of modern theoretical preparation. The position may be unknown to me, to you, and perhaps even to the world champion, but it was certainly well-known to Nepomniachtchi, as we will see. 12... a8b8  13. b1d2  13... e7f8  14. g2g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] The first choice of the computer and still preparation by Nepomniachtchi. 14... d7e6 A logical idea, since the a2-bishop is a monstrous piece.