1. d2d4  1... d7d5  2. g1f3  2... g8f6  3. e2e3  3... e7e6  4. f1d3  4... c7c5  5. b2b3 Many strategies are possible when you desperately need to win playing with the white pieces. One of them is to avoid a theoretical discussion in the opening and play something that keeps tension on the board. While this strategy will fail in today's example, it has been used many times successfully. Perhaps the most emblematic case is Kasparov's victory to save the 1987 match against Karpov in Seville. 5... b8c6  6. c1b2  6... c5d4  7. e3d4  7... g7g6 [%c_effect g6;square;g6;type;Interesting;persistent;true] An interesting move, preparing the development of the bishop on g7, where it will be well placed if Black manages to castle. The conventional 7...Bd6 is the most popular move. 8. e1g1  8... f8g7  9. b2a3 [%c_effect a3;square;a3;type;GreatFind;persistent;true] This is the only possible problem for Black's plan. If she wants to castle quickly, then the bishop needs to get back to f8. But a more aggressive plan is possible. 9... f6e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] 10. f1e1 [%c_effect e1;square;e1;type;Inaccuracy;persistent;true] This is a new move, and I'm not sure it helps White very much, since Black wants to play f5 anyway, and the rook is not going to do anything particularly useful on e1. 10... f7f5  11. c2c3 [%c_effect c3;square;c3;type;Inaccuracy;persistent;true] Petrosian's plan is tried in a slightly worse situation. 11... c8d7  12. d1c2 [%c_effect c2;square;c2;type;Inaccuracy;persistent;true] 12... a8c8 