[%c_effect c3;square;c3;type;GreatFind;persistent;true] Avoiding the temptation.
1. g1f3  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. f1g2  4... d5d4 One of the popular ways of meeting the Reti these days. Black enters a reversed Benoni, down a couple of tempi. 5. e1g1  5... b8c6  6. e2e3 The most direct approach. White wants to make the most of his lead in development and needs open files. 6... e6e5 Keymer enters a forcing line. 7. e3d4  7... e5e4  8. d4d5 [%c_effect d5;square;d5;type;GreatFind;persistent;true] And here comes a star novelty $1 8... e4f3 Keymer took the knight quickly, but sank into deep thought after 9. d1f3  9... c6e5 Self-pinning. There was a lot to think about, since the knight is not safe anywhere. 10. f1e1  10... d8e7 The X-ray threats along the open file makes Black's previous move possible. 11. f3d1 [%c_effect d1;square;d1;type;GreatFind;persistent;true] An only move $1 Esipenko blitzes his moves out. 11... c8g4 Played after another long think. The game is forced again. 12. f2f3  12... g4f3  13. d1a4  13... e8d8  14. d2d4  14... f3g2  15. e1e5  15... e7d7  16. a4d7  16... f6d7  17. g1g2  17... d7e5  18. d4e5 White has a pawn for the exchange, and what a pawn it is $1 The powerful central duo makes Black's task extremely difficult. Add to this White's advantage on the clock, multiply it by the psychological impact of the surpise, and we can only guess what was Keymer's state of mind at this moment. 18... f7f6 The most direct attempt to deal with the white center, but a risky one. Only here did Esipenko start to think $1 19. e5e6 This is the issue—now the pawns become really scary. 19... c7c6  20. c1f4  20... c6d5  21. c4d5  21... a8c8 A small trap.