1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. g1f3  3... f8g7  4. e2e3 This shy move is used by some elite chess players as an Anti-Grunfeld weapon. 4... e8g8  5. f1e2  5... d7d6  6. b1c3  6... b8d7 Nepomniachtchi plays in typical King's Indian style, putting the knight on d7 and then playing e5. It can't be too bad. 7. h2h3 The game will quickly take an original course. I think Keymer's idea was to postpone castling and thus make the e5-e4 advance less pleasant for Black. 7... e7e5  8. b2b4  8... e5d4 A new move. 9. e3d4  9... d6d5 [%c_effect d5;square;d5;type;GreatFind;persistent;true] 10. e1g1 White cannot avoid the isolated pawn structure.