Interesting endgame position

[David Dahlem]

[d]8/5p2/8/4Pk2/2bPnpp1/8/2p1NPP1/2B1K3 b - - 0 1

With best play by White, is this a draw?

[David Dahlem]

[d]8/5p2/8/4Pk2/2bPnpp1/8/2p1NPP1/2B1K3 b - - 0 1

With best play by White, is this a draw?

This position occured at move 42 in one of my engine vs engine games. Black did manage to win after a long struggle. Here is the full game.

[Event "Stockfish171 Gauntlet"]
[Site "?"]
[Date "2010.05.03"]
[Round "3"]
[White "Stockfish 1.7.1"]
[Black "Mystery Engine"]
[Result "0-1"]
[ECO "C02"]
[TimeControl "40/300:40/300:40/300"]

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.a3 Nh6 7.b4 {-0.24/17} cxd4 {+0.06/18} 8.cxd4 {-0.20/18} Nf5 {+0.04/16} 9.Bb2 {-0.24/18} b5 {+0.04/17} 10.Bxb5 {0.00/17} a5 {+0.05/17} 11.Bd3 {0.00/17} axb4 {+0.14/15} 12.Bxf5 {0.00/20} exf5 {+0.11/17} 13.O-O {0.00/21} Qb6 {+0.01/17} 14.axb4 {+0.16/20} Rxa1 {+0.04/18} 15.Bxa1 {+0.20/17} Nxb4 {-0.11/18} 16.Nc3 {+0.28/20} Be7 {-0.08/18} 17.Bb2 {+0.44/19} O-O {-0.04/19} 18.Ba3 {+0.28/20} Be6 {-0.15/18} 19.Na2 {+0.36/20} Rb8 {0.00/19} 20.Qd2 {+0.20/18} Nxa2 {0.00/17} 21.Bxe7 {+0.12/18} Qb3 {0.00/19} 22.Re1 {0.00/19} Nc3 {+0.06/18} 23.Re3 {0.00/20} Qb1+ {+0.08/17} 24.Re1 {0.00/26} Qb2 {+0.07/18} 25.Qxb2 {0.00/22} Rxb2 {+0.07/16} 26.Ra1 {0.00/24} h6 {+0.03/17} 27.Ba3 {0.00/25} Rb8 {+0.01/19} 28.Kf1 {+0.16/17} f4 {+0.02/19} 29.h4 {+0.08/18} Ne4 {+0.17/18} 30.Ke1 {0.00/19} Rc8 {+0.12/18} 31.Bb4 {0.00/20} Rc4 {+0.34/17} 32.Ba5 {-0.08/16} Kh7 {+0.46/18} 33.Bd2 {-0.52/16} g5 {+0.50/16} 34.Rc1 {-0.48/17} Kg6 {+0.52/17} 35.hxg5 {-0.56/18} hxg5 {+0.43/19} 36.Rxc4 {-0.56/20} dxc4 {+0.51/17} 37.Bb4 {-0.60/21} c3 {+0.58/18} 38.Ng1 {-0.28/19} c2 {+0.58/18} 39.Ne2 {-0.80/19} Bc4 {+0.56/20} 40.Ba3 {-0.56/20} Kf5 {+0.57/19} 41.Bb2 {-0.84/20} g4 {+1.22/20} 42.Bc1 {-1.17/21} f3 {+1.47/20} 43.gxf3 {-2.02/22} gxf3 {+1.47/19} 44.Nf4 {-1.85/25} Nc3 {+1.74/18} 45.Kd2 {-2.46/23} Nd1 {+1.74/16} 46.Nh3 {-2.38/21} Bb3 {+2.09/20} 47.Ke1 {-2.50/22} Ke4 {+2.09/21} 48.Ng5+ {-2.66/21} Kxd4 {+2.09/19} 49.Nxf3+ {-2.74/22} Kd3 {+2.09/21} 50.Bg5 {-2.50/23} Nc3 {+2.09/21} 51.Ng1 {-2.54/23} Bc4 {+2.09/22} 52.Be3 {-2.42/21} Be6 {+2.12/21} 53.Bd2 {-2.62/24} Bg4 {+2.09/20} 54.Bg5 {-2.42/23} Ne4 {+2.40/22} 55.Bc1 {-2.50/23} Nc5 {+2.40/21} 56.f3 {-2.54/23} Bh5 {+2.40/19} 57.Bh6 {-2.70/22} Kc3 {+2.40/22} 58.Ne2+ {-2.74/22} Kc4 {+2.40/23} 59.Nc1 {-2.74/24} Bxf3 {+2.40/21} 60.Kd2 {-2.50/23} Bd1 {+2.40/23} 61.Bg7 {-2.10/21} Ne4+ {+2.40/23} 62.Ke3 {-2.86/21} Ng5 {+2.40/24} 63.Bf6 {-2.30/22} Nf3 {+2.32/24} 64.Bh8 {-2.50/21} Nh2 {+2.32/24} 65.Kd2 {-2.54/23} Nf1+ {+2.32/22} 66.Ke1 {-2.18/6} Ng3 {+2.32/24} 67.Kd2 {-2.54/22} Ne4+ {+2.32/23} 68.Ke3 {-2.38/25} Nc3 {+2.41/24} 69.Nd3 {-2.58/23} Nb1 {+2.41/23} 70.Nc1 {-2.50/22} Bg4 {+2.42/22} 71.Bg7 {-2.66/22} Bf5 {+2.44/23} 72.Bh6 {-2.58/22} Kc3 {+2.54/23} 73.Ne2+ {-2.78/19} Kb4 {+2.50/22} 74.Kd4 {-2.82/20} Kb3 {+2.48/21} 75.Bc1 {-2.98/21} Bg4 {+2.67/21} 76.Ng3 {-3.19/23} Nc3 {+2.82/21} 77.Kd3 {-3.31/22} Nb5 {+2.98/22} 78.Kd2 {-3.27/22} Nd4 {+2.98/22} 79.Ke3 {-3.51/22} Nc6 {+2.98/20} 80.Kf4 {-3.51/21} Bh3 {+3.21/22} 81.Ke3 {-3.59/22} Nxe5 {+3.55/22} 82.Kd4 {-4.28/22} Nc6+ {+3.63/21} 83.Ke3 {-4.28/23} Na5 {+3.71/21} 84.Ne2 {-4.24/23} Nc4+ {+3.84/20} 85.Kd4 {-4.20/21} Nd6 {+4.02/21} 86.Nf4 {-4.36/22} Bf1 {+4.02/20} 87.Ke5 {-4.52/25} Nb5 {+4.07/21} 88.Nd5 {-4.60/26} Nc3 {+4.11/20} 89.Ne3 {-4.72/27} Bh3 {+4.12/21} 90.Kf6 {-4.88/26} Na2 {+4.13/22} 91.Nxc2 {-4.88/30} Kxc2 {+4.40/20} 92.Bg5 {-5.33/29} Be6 {+4.40/19} 93.Ke5 {-5.77/31} Kd3 {+4.47/18} 94.Bf4 {-5.73/26} Ke2 {+4.80/19} 95.Bg5 {-5.81/26} Nb4 {+5.36/18} 96.Kf4 {-5.77/27} Nd3+ {+5.36/16} 97.Kg3 {-10.30/27} f5 {+5.62/17} 98.Bh6 {-76.89/25} Bd5 {+5.94/18} 99.Bg5 {-14.66/28} Kd1 {+6.24/18} 100.Bh6 {-76.96/24} Kc2 {+6.24/16} 101.Bg5 {-77.07/29} {White resigns} 0-1