[Event "Koelle 'A'"]
[Site "BCC"]
[Date "2016-10-27"]
[White "Rodney Jacobs"]
[Black "Harrison Harrison"]
[WhiteElo "1659"]
[BlackElo "1711"]
[Result "0-1"]

1.e4 d6 2.d4 Nd7 3.f4 e6 4.Nf3 Qe7 5.Bd3 h6 6.O-O b6 7.Nc3 Bb7 8.Nb5 {(RJ) It seems to me that White must have an almost winning game here, given his lead in development and Black's tangled kingside. But that does not take into account Harrison! Stockfish 7 gives e5 here, with a 1.3 advantage to White. Deep Shredder likes a4, obviously to dissuade Black from castling queenside.} Ndf6 9.Re1 {(RJ) Stockfish 7 gives e5, with a 1.7 advantage to White.} a6 10.Nc3 O-O-O 11.Qe2 {(RJ) Recommended by both my engines. Stockfish 7 gives White a 2.00 advantage at this point.} a5 12.a3 {(RJ) Again preferred by both engines. The threat is the obvious b4.} g5 13.b4 g4 14.Nd2 Bg7 15.bxa5 Nxe4 {(RJ) At the time I thought this was quite brilliant and could not see a decent continuation for White. But it is a mistake! Nd5 is best.} 16.Nb5? {(RJ) Shaken, White immediately goes astray. Simply Ndxe4 and White is winning easily.} Nc3! {(RJ) Best. But the engines say White nevertheless has a slight edge.} 17.Qxg4 {(RJ) Qe3 is better.} f5 {(RJ) The engines call it even here.} 18.Bxf5 {(RJ) Best.} exf5? {(RJ) Nxb5 is better} 19.Rxe7 {(RJ) White now has a 1.5 advantage.} fxg4 20.Rxc7+ Kb8 21.Rxg7 Nxb5 22.axb6? {(RJ) Throws away White's advantage. But I was still shaken by the unexpected turn of events and was under the impression I was losing. Rb1 (which I had considered and discarded) is the move.} Nf6 {(RJ) Now the computers say it's dead even.} 23.Bb2 Rhe8 {(RJ) Best.} 24.a4? {(RJ) It's incredibly tricky! I thought this move, attacking the knight which has no escape square, was my saving grace. But it's a mistake, after which Black has a slight edge. The programs recommend Nb3 or Rf1.} Re2 25.Nc4?? {(RJ) Probably the losing move. Correct is d5.} Rxg2+ 26.Kf1 Rxc2 {(RJ) Now Black has a 2.0 advantage.} 27.axb5? {(RJ) White has lost the thread of the game. Na5 is much better.} Rxc4 28.Ra7 Rd7 {(RJ) While White muddles, Black comes jup again and again with very accurate moves.} 29.Rg6 {(RJ) Best. But White is now lost.} Nd5 {(RJ) Again best.} 30.Rxh6 Nxb6 31.Ra1 Nd5 {(RJ) Rc2 was also good.} 32.Ba3 Ne3+ 33.Ke2 Nf5 34.Rf6 Bf3+ 35.Kd3 Rxd4+ 36.Kc2 Rc7+ 37.Kb3 Bd5+ 38.Kb2 Rd2+ 39.Kb1 Be4# {(RJ) A nice sharp game by Harrison, coping with the complications far better than me,}