1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6 In a world championship match, the Berlin is always to be expected. Nowadays it's considered the most solid and reliable way to meet the Ruy Lopez. 4. e1g1  4... f6e4  5. f1e1  5... e4d6  6. f3e5  6... f8e7  7. b5f1  7... c6e5  8. e1e5  8... e8g8  9. d2d4  9... e7f6  10. e5e1  10... f8e8  11. b1c3 [%c_effect c3;square;c3;type;Interesting;persistent;true] This pawn sacrifice is a fresh move, much less played than 11.c3, 11.Bf4 or 11.Rxe8+. 11... e8e1  12. d1e1  12... f6d4  13. f1d3 [%c_effect d3;square;d3;type;Interesting;persistent;true] An interesting and dangerous move, aimed against Black's idea of finishing development with 13...Ne8 followed by the advance of the d-pawn. 13... d4c3  14. e1c3  14... d6e8  15. b2b3 This position featured in two games from GM Van Foreest, a creative and respected theoretician whose games tend to be followed closely by the chess community due to its abundance of ideas in all phases. 15... d7d5 A new move, but hardly surprising. It's very natural and the first choice of the computer. 16. c1f4 The bishop changes its destination. 16... c8e6  17. a1e1 White has the pair of bishops and good piece play, but Black is a pawn up and has no weakness. The position is equal and the Berlin Defense survives once again. 17... d8d7  18. a2a4 Lei was still playing very fast at this point. 18... e8d6 Black has many other possible moves. This one is also good. 19. e1e3 The challenger finally took some time before playing this move. The rook is heading for g3. 19... d6e4 [%c_effect e4;square;e4;type;Interesting;persistent;true] Giving the pawn back in order to exchange queens. 20. c3c7  20... d7c7  21. f4c7  21... e4c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] The game is very close to a draw. 22. d3f1  22... a8c8 [%c_effect c8;square;c8;type;Inaccuracy;persistent;true] This makes Black's defensive task more difficult. Both 22...d4 and 22...Bf5 lead to an equal position. 23. c7e5  23... c5d7  24. f1d3  24... d7c5  25. d3e2 