context: 1. g1f3  1... g8f6  2. g2g3  2... c7c5  3. f1g2  3... b8c6  4. c2c4  4... d8b6 A rare move, only Black's seventh most popular choice. The idea is to prevent the d2-d4 advance. There will be a transposition to a more familiar position in a few moves. 5. b1c3  5... e7e6  6. e1g1 This is a position known to theory, with almost two hundred games in the database. 6... f8e7  7. b2b3 A natural way of developing the bishop. 7... e8g8  8. c1b2  8... d7d6 [%c_effect d6;square;d6;type;Inaccuracy;persistent;true] A passive move that leaves White with a comfortable position after the e3/d4 plan. 9. e2e3  9... c8d7  10. d2d4  10... c5d4  11. f3d4 A new move. 11... a7a6  12. d1d2  12... a8c8  13. a1c1  13... b6a7  14. f1d1 White has a good position, with more space. The two bishops cross the board and are far superior to their two colleagues. Even so, Black's position is solid and the d6-pawn is the only weaknesses. 14... c6d4 A good decision - Fedoseev doesn't like to wait. 15. d2d4  15... a7d4  16. d1d4  16... d7c6 After this move Black has a passive position again. 17. c1d1  17... c6g2  18. g1g2  18... f8d8  19. b2a3  19... f6e8  20. d4d3  20... c8c6 Black's problem is that his position is passive and there's no clear plan. 21. a3b4  21... g8f8  22. e3e4  22... e8c7  23. a2a4  23... f8e8  24. a4a5  24... b7b5  25. a5b6  25... c6b6  26. b4a5  26... b6b7  27. e4e5 [%c_effect e5;square;e5;type;Inaccuracy;persistent;true] A creative attempt, but it's not the best move. 27... d6e5  28. d3d8  28... e7d8  29. c3e4  29... d8e7 [%c_effect e7;square;e7;type;Mistake;persistent;true] This is the losing move. 30. b3b4 [%c_effect b4;square;b4;type;GreatFind;persistent;true] With this and the next surprising moves, White seals the game in impressive fashion. 30... f7f5 [%c_effect f5;square;f5;type;Inaccuracy;persistent;true] 31. e4c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] 31... e7c5  32. b4c5  32... b7a7  33. c5c6 A beautiful position. The passed pawn, combined with the active rook and bishop, form a great contrast with the painful situation of Black's rook and knight, which have almost no safe moves. 33... c7a8 The only way to prevent 34.Rd7. 34. d1b1 Threatening 35.Rb7. Material losses are inevitable. 34... a7c7  35. b1b8  35... e8e7  36. b8a8  36... c7c6  37. c4c5  37... e5e4  38. a5b6  38... e6e5  39. a8a6 White remains a piece up and completely winning. 39... f5f4  40. a6a7  40... e7f6  41. a7c7  41... c6e6  42. c7d7  42... h7h5  43. b6d8  43... f6g6  44. d7d6  44... e6d6  45. c5d6  45... g6f5  46. g3f4  46... e5f4  47. d8g5  47... f4f3 