Black to move

1) +0.09 (46 ply) 18...Bg5 21.Na3 O-O 22.Nc4 a5 23.h4 Bh6 24.Ncb6 Ra7 25.Nc8 Ra8 26.Nce7+ Kh8 27.Bb5 axb4 28.cxb4 Ra3 29.O-O Qb8 30.Bc4 Nd8 31.Nf5 Ne6 32.b5 Rc8 33.Nde7 Rxc4 34.Nxd6 Qf8 35.Nxc4 Rc3 36.Qd5 Qxe7 37.b6 Rb3 38.Nd6 Rxb6 39.Nc8 Nf4 40.Nxe7 Nxd5 41.Nxd5 Ra6 42.Rb1 g6 43.Rb8+ Kg7 44.g4 Bd2 45.Nc7 Ra1+ 46.Kg2 h6 47.Rb5 Be1 48.Rxe5 Bb4 49.Re8 Bd6 50.Nd5

2) +0.38 (46 ply) 18...O-O 21.h4 a5 22.Bc4 axb4 23.cxb4 Qd7 24.Nce3 Bd8 25.O-O Kh8 26.Qe2 Ra7 27.g3 g6 28.Bd3 Qh3 29.Rd1 Bxh4 30.gxh4 Qxh4 31.Ng2 Qh3 32.Qe3 Qxe3 33.Ngxe3 Kg7 34.Kg2 h5 35.Rc1 Ra2 36.Bf1 Nd8 37.Nc4 Nb7 38.Nc3 Ra7 39.Ne3 Rfa8 40.Nb5 Ra4 41.Nd5 Ra1 42.Rc7 Rb8 43.Bc4 Rb1 44.f3 Rc1

3) +0.81 (45 ply) 18...Qc8 21.Nce3 Bd8 22.Bc4 O-O 23.h4 a5 24.g3 Kh8 25.O-O Qh3 26.Be2 Qc8 27.Kg2 Qc6 28.Qd2 a4 29.Bd3 a3 30.Rh1 Ra7 31.Qe2 Qe8 32.Bc4 Qd7 33.Ba2 Qa4 34.Nf5 Ra8 35.h5 h6 36.Bc4 Ra7 37.Rb1 Qe8 38.Ra1 Bg5 39.f4 Bd8 40.Ba6 Qe6 41.Rxa3 Re8 42.Qd3 exf4 43.gxf4 Qxe4+ 44.Qxe4 Rxe4 45.Nd4 Nc5 46.bxc5 dxc5 47.Nb3 Re6 48.Nxc5 Re1