[Event "Koelle 2017"]
[Site "Mechanics Institute"]
[Date "2017-11-16"]
[White "Harrison Harrison"]
[Black "Rodney Jacobs"]
[WhiteElo "1757"]
[BlackElo "1704"]
[Result "0-1"]

1.d3 d5 2.Nd2 Nf6 3.e3 e5 4.Qe2 {Harrison will often play Qe2 in this type of position. Sometimes it gives him a possible Qb5ch. It effectively commits White to a fianchetto of his King's bishop. As a result, it helps Black to plan. (RJ)} Nc6 5.h3 Bd6 6.a3 O-O {Stockfish 7 gives Black already an advantage of 1, due obviously to his advantage in development - given that White has to move things before he can get his minor pieces out, maybe as much as 5-6 tempi. How, against Harrison, to make something of this, is the issue! He has a history of winning, while flouting opening principles, by virtue of his middle game magic.  (RJ)} 7.c3 b6 8.b3 a5 9.Bb2 Ba6 10.c4 Re8 11.cxd5 Nxd5 12.Ne4 Bf8 {This move, preserving the bishop, is best, according to Stockfish 7.} 13.g4 {As is this, which is surprisingly effective. (RJ)} Qd7 {Stockfish 7 gives Ndb4! (RJ)} 14.Bg2? {An error, The bishop is needed for the protection of d3. (RJ)} Rad8 {Again Ndb4 is on. (RJ)} 15.Rc1? {O-O-O is better. (RJ)} Ndb4! {Now the knight sac is decisive. (RJ)} 16.axb4 Nxb4 17.Rc3 {It's complicated. The engines say White is lost, but bishop f3 is best.(RJ)} Nxd3+ 18.Rxd3 {Forced. (RJ)} Bxd3 19.Qd2 Qc6! 20.f3 {The engines say White has nothing better than 20. Nf6 Qxf6 (RJ)} Bxe4 21.Qc1 Bb4+ {I considered Bc2! It is stronger. (RJ)} 22.Kf2 Qxc1 {Rd2 ch is better. (RJ)} 23.Bxc1 Bd5 24.Ne2 Bxb3 25.Ng3 Rd1 26.Ne4 {The last couple of times I have played Harrison, I have blundered in a winning position. And time was a bit short. As a result, I was now over-anxious to simplify and get safely to the end. This, of course is plain wrong-headedness. You start to feel that the game will win itself without you having to work for it, which is never true. (RJ)} Rxh1 27.Bxh1 Rd8 28.Bb2 f6 29.f4 exf4 30.exf4 Kf7 31.Ke3 Bd5 32.Bf3 Re8 {Black should be looking at a4! round here. (RJ)} 33.Kd4 Bxe4 {Again over-anxious to simplify. Potentially heading to an endgame with pawns on both sides of the board, the bishop should not be swapped for a knight. (RJ)} 34.Bxe4 Bc5+ 35.Kd3 Rd8+ {Getting the pawn roller going with b5 was a better plan. (RJ)} 36.Kc2 h6 37.Bc6 Bb4 38.Bc1 Rd4 39.Ba4 Rc4+ 40.Kb1 Rc3 {At last hitting on a reasonable plan. (RJ)} 41.h4 Rh3 42.h5 Rg3 43.Bd7 Ke7 44.Bf5 c5 45.Kc2 Rc3+ 46.Kb2 Rg3 47.Kc2 Kd6 48.g5 Rc3+ 49.Kb2 hxg5 50.fxg5 Rf3 51.Bg4 {Setting a nasty little trap. (RJ)} Rf2+ {If Rg3??  Bf4ch} 52.Kb3?? {Walking into a mating net. (RJ)} fxg5? {b5. (RJ)} 53.Bxg5 b5 {White can't ultimately avoid a4 mate. (RJ)} {#R}