[Event "Koelle 2018"]
[Site "BMI"]
[Date "2018-11-08"]
[White "Ruari Coffey"]
[Black "Harrison Harrison"]
[WhiteElo "1487"]
[BlackElo "1655"]
[Result "1-0"]

1.d4 d6 2.c4 Nd7 3.Nc3 e6 4.Nf3 Ndf6 5.e4 h6 {No apparent weaknesses in this line of Harrison's opening theory (R.C)} 6.e5 {Might be a bit early. Bd3 might be played first to see black's plan (R.C)} dxe5 7.Nxe5 c6 8.Be3 Ne7 9.Bd3 Nf5 10.Bxf5 (10.O-O Nxd4 11.Nxf7 Kxf7 12.Bxd4 {Is the variation I saw but not sure white gets anything from this (R.C)}) 10...exf5 11.O-O Bd6 12.Qe2 O-O 13.f4 Re8 14.c5 Bc7 15.Rad1 Ng4 16.Rf3 Nxe3 17.Rxe3 f6 {I felt that this opens the king too much but I couldn't work out a plan for my knight (R.C)} 18.Nf3 {Funnily enough, best. (R.C)} Rxe3 19.Qxe3 b6 20.Kh1 {Just getting the king off my queen's diagonal, though 20. d5 can still be played (R.C)} Bd7 {Braving a long term pin. Qf8 looks more safe and pressures the c5 pawn (R.C)} 21.d5 cxd5 {Qe8 to swap off queens might have been better instead (R.C)} 22.Nxd5 bxc5 23.Qxc5 Bb6 24.Nxb6 axb6 25.Qd5+ Kf8 26.Nh4 {going for a mating net if allowed (R.C)} (26.Qxd7 Qxd7 27.Rxd7 Rxa2 28.Rd2 Ra1+ 29.Ng1 {I saw this but decided I have to work too hard for any win. Ideas such as g3, Kg2 and Ne2 solidify the position but I found is unclear if White can push for an advantage  (R.C)}) 26...g5 (26...Ra5 {or any move that does not involve the g-pawn. Qe8 wins white the exchange (R.C)} 27.Ng6+ Ke8 28.Qg8#) 27.fxg5 hxg5 28.Nxf5 Ra5 29.Qd6+ Kf7 {Black offered a draw (R.C)} 30.Qxd7+ Qxd7 31.Rxd7+ Ke6 32.Rd6+ Kxf5 33.Rxb6 Rxa2 34.h3 Ke5 {White must get the king into the game or a draw will occur (R.C)} 35.Kh2 f5 36.Kg3 Ra4 37.Rb8 Rc4 38.Re8+ Kf6 39.Re2 Rb4 40.Kf2 {If 40. Kf3, ...f4 and the king has trouble getting to the b-pawn (R.C)} Kg6 41.Ke3 Kh5 42.Kd3 Kh4 43.Kc3 Rb8 44.b4 Kg3 45.Kc4 f4 46.b5 {Perhaps Rb2 first in order to then protect the 3rd rank (R.C)} f3 47.gxf3 Kxf3 48.Re5 Kf4 49.Rd5 Rc8+ 50.Kb4 Rh8 51.Rd3 Ke4 52.Rc3 Kd4 53.Rg3 Rg8 (53...Rh4 54.Rg4+ Rxg4 55.hxg4 Kd5 {White is clearly winning (R.C)}) 54.b6 Kd5 55.Kb5 Kd6 56.Rd3+ Ke5 57.b7 Rf8 58.Kc6 Ke4 59.Rd7 Kf4 60.Rf7+ Rxf7 61.b8=Q+ Kf5 62.Qb5+ Kg6 63.Qe5 Rf6+ 64.Kd7 Rf7+ 65.Ke8 Rf4 {At this point, I thought black has a fortress. It would be the case but white's h-pawn is still there and can help break through. *Stockfish disagrees with the fortress idea and white is still winning both with and without the h-pawn (R.C)} 66.Qe6+ Kh5 67.Qe2+ Kh4 68.Qg2 Kh5 69.Qg3 Kg6 70.Ke7 Kh5 71.Ke6 Kg6 72.Qd3+ Kg7 {of course not Kh5, then Qh7#} 73.h4 Rxh4 {Stockfish gives mate in 19 moves (R.C)} 74.Kf5 Rf4+ 75.Kxg5 Rf7 76.Qd4+ Kh7 77.Qe5 Rg7+ 78.Kf6 Rg6+ 79.Kf7 {And the game is over (R.C)} Kh6 80.Qh2+ {White wins the rook and the game. (R.C)} {#r}