(1) Aleksandrov,Aleksej (2638) - Flear,Glenn C (2498) [D45]
12th ch-EUR Aix-les-Bains FRA (8.60), 30.03.2011
[Mueller,Karsten]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 e6 5.Nf3 Nbd7 6.Qc2 b6 7.Bd3 Bb7 8.0-0 Be7 9.Rd1 Qc7 10.a4 a6 11.cxd5 cxd5 12.Bd2 0-0 13.Rac1 Rac8 14.Qb1 Qb8 15.b4 e5 16.dxe5 Nxe5 17.Be2 Nxf3+ 18.Bxf3 d4 19.exd4 Bxf3 20.gxf3 Bd6 21.Kg2 Rfe8 22.b5 a5 23.Qf5 Ba3 24.Rc2 Re6 25.Bf4 Bd6 26.Bxd6 Rxd6 27.Ne4 Rxc2 28.Nxd6 Rc3 29.Qe5 h6 30.d5 Qc7 31.Rd2 Rc1 32.f4 Rg1+ 33.Kxg1 Qc1+ 34.Kg2 Qxd2 35.Nc4 Qxd5+ 36.Qxd5 Nxd5 37.f5 Kf8 38.Kf3 Ke7 39.Nb2 Kd6 40.Ke4 Nc3+ 41.Kd3 Nd5 42.Kd4 Nf4 43.Nc4+ Kc7 44.Ne5 f6 45.Nc4 h5 46.Nd2 Kd6 47.Ne4+ Kc7 48.Ng3 h4 49.Ne4 Ne2+ 50.Ke3 Nc1 51.h3 Kd7 52.f4 Na2 53.Kf3 Nb4 54.Kg4 Nd5 55.Kxh4 Nxf4 56.Ng3 Nd3 57.Kh5 Ke7 58.Ne2 Ne5 59.Nf4 Kf7 60.Nd5 Nd7 61.Kg4 g5 62.fxg6+ Kxg6 63.Kf4 Kh5 64.Kg3 Kg5 65.h4+ Kf5 66.Ne7+ Ke6 67.Nc8 Kf5 68.Kf3 Kg6 69.Kg4 f5+ 70.Kf4 Kh5 71.Kxf5 Kxh4 The barrier Botvinnik's guideline that knight endings are like pawn endings has good points as zugzwang and outside passed pawns play a major role here as well. But there are also differences due to the tactical possibilities of the knight:

72.Kg6!
Aleksandrov walks round the mine field. [72.Ke6? Nc5+ and; 72.Ke4? Nc5+ walk directly into it.; But 72.Kf4 wins as well: 72...Kh5 and now the king can circumvent it in the south: 73.Ke3 Kg5 74.Kd4 Kf6 75.Kd5+- ]

72...Kg4 73.Kf7
The king walks through the hole.

73...Kf5
[73...Ne5+ 74.Ke6 Nc4 75.Kd5 Nb2 76.Nxb6 Kf5 77.Kd6 Now White has constructed a mine field: 77...Kg6 (77...Ke4 78.Nd7 Nxa4 79.Nc5++- ; 77...Kf6 78.Nd7++- ) 78.Kc6 Kf7 79.Nd5 Nxa4 80.Nc3 Nxc3 81.b6+- and the knight is dominated in a typical way.]

74.Ke7 Nc5 75.Nxb6 Ke4 76.Kd6 Kd4 77.Kc6
White uses zugzwang - one of the typical endgame weapons, which is often applied against knights.

77...Nd3 78.Nd7 Kc4
[78...Nb2 79.b6 Nxa4 80.b7+- ]

79.b6 Nb4+ 80.Kd6 Na6 81.b7 Kb4 82.Nc5
[82.Nc5 Nb8 83.Kc7 Kxc5 84.Kxb8+- ] 1-0