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 