Annotated Chess Game 11193082 by 64squaresofpain

Queen vs Rook endgame study

24. Nc3e2 Bd4xa1 25. Rf1xa1 Kc8b8 26. f3 Bb7c8 27. Ne2c3 c6 28. axb5 axb5 29. Nc3d1 g6 30. Nd1e3 f5
This only works because of the intermediate Qh7+
31. exf5 Qd7h7 32. Kh3g3 gxf5 33. gxf5 Bc8xf5 34. Ne3xf5 Qh7xf5 35. Ra1g1 Qf5f4 36. Kg3f2 Qf4xb4 37. Rg1g4 Qb4d2 38. Kf2g3 Kb8b7
Black's King finally gets involved
39. Kg3h3 Kb7b6 40. Kh3g3 c5 41. Rg4e4 Kb6c6 42. Kg3h3 Qd2g5
? Qf2 was better as it wins the pawn on f3 by force
43. Re4g4 Qg5f5 44. Kh3g2 d5 45. Kg2g3 c4 46. dxc4 dxc4 47. Bb3xc4
Saccing back to develop a passed pawn, and with tempo
47... bxc4 48. Rg4xc4 Kc6d5 49. Rc4e4
And the game steers towards a Queen vs Rook endgame... this is winning for Black, although some care is still needed
49... Qf5g6 50. Kg3f2 Qg6b6 51. Kf2e2 Qb6b2 52. Ke2d3 Qb2a3 53. c3 Qa3b3 54. Kd3d2 Qb3a2 55. Kd2d3 Qa2f2 56. Re4e3 Qf2f1 57. Kd3c2 Kd5c4
Hoping for Rxe5, allowing Qd3+ then Qxc3+ winning the Rook
58. Re3e4
This was obviously seen, ah well
58... Kc4d5 59. Re4e3 Kd5e6 60. Kc2d2 Ke6f5 61. Re3d3 Qf1f2 62. Kd2d1 Kf5f4 63. c4 Qf2b2 64. c5 e4 65. fxe4 Kf4xe4
Now 66.Rh3 Qd4+ 67.Ke2 Qxc5 68. Rh4+ Ke5 69. Rh5+ and the game is drawn... this is just one example of how a player can be careless in this endgame
66. Rd3d2 Qb2b1 67. Kd1e2 Qb1b5 68. Ke2d1 Ke4e3
And, just as discussed under rook endgames, the principal idea is to force your opponent into zugzwangs
69. Kd1c1 Qb5xc5 70. Rd2c2 Qc5a5 71. Rc2b2 Qa5a4 72. Rb2b1 Ke3d3 73. Rb1b3
Qxb3 is stalemate... there are many such tricks in this endgame