[Event "Australian open 2019"]
[Site ""]
[Date "2018-12-28"]
[White "Ruari Coffey"]
[Black "Winston Zhao Cheng"]
[WhiteElo "1400"]
[BlackElo "1573"]
[Result "1-0"]

1.d4 Nf6 2.Nd2 {Black spent about a minute adjusting to this move then proceeded to though me off as well. (R.C)} c5 3.Ngf3 cxd4 4.Nxd4 e5 5.N4b3 d5 6.e3 {Black is better out of the opening and white will have some trouble organising their pieces (R.C)} Bd6 7.c4 O-O 8.Be2 Nc6 9.cxd5 Nxd5 10.Nc4 Bb4+ 11.Bd2 Bf5 {The idea being to have a knight also controlling the light squares which would prove troublesome. (R.C)} 12.a3 Bxd2+ 13.Ncxd2 {This knight or the queen has to recapture the bishop as b5 would exploit the c4 knight. White is now threatening e4 with a fork. (R.C)} Rc8? {Overlooking the threat. Black spent a few minutes thinking on this move (about 5) making me doubt whether e4 works. (R.C)} 14.e4 Nf4 15.exf5 Nxg2+ 16.Kf1 Nh4 17.Ne4 {Wanting to trade queens. If allowed this would only benefit white. (R.C)} Qb6 18.Qd3 {Having to protect the knight somehow, while also being able to deal with Rd8 ideas. (R.C)} Rfd8 19.Qh3 Nxf5 20.Rc1 Nfe7 21.Rg1 Ng6 22.Rc3 {Now a rook is helping to defend the knight. The queen can now move and the h-pawn can be pushed. This would be great if allowed. (R.C)} Nce7 23.Qe3 Qxe3 24.fxe3 {Freeing a square for the king as the knights are able to attack the light squares around the king. (R.C)} Nd5 25.Rxc8 Rxc8 26.Kf2 Rc2 27.Rc1 (27.Rd1 Rxb2 28.Rxd5 Rxb3 29.Rd8+ Nf8 30.Nc5 {And white will lose another piece. (R.C)}) 27...Rxb2 28.Rc8+ Nf8 29.Nbc5 Ne7 30.Ra8 b6 31.Nd7 Ng6 32.Nxf8 Nxf8 33.Rxa7 f5 34.Nd6 g6 35.Nc4 Rb5 36.a4 Rc5 37.Nxb6 Ne6 38.Bc4 Rc6 39.a5 Kh8 40.Bxe6 Rxe6 41.Rc7 {A poor decision by white. This gives black some counter-play as the endgame would be a rook vs lots of pawns. I wasn't too confident in my ability to win that. (R.C)} g5 42.Rb7 Rc6 43.a6 Rc2+ 44.Kg3 h5 45.Nd5 {I can give back the knight if needed but also aiming for f6 where there is a real mating threat} f4+ 46.exf4 exf4+ 47.Kf3 Rxh2 48.a7 (48.Nf6 {And there is no way to stop the mate. (R.C)} Rh3+ 49.Ke4 Re3+ 50.Kf5) 48...Rh3+ 49.Ke4 Ra3 50.Rb8+ Kg7 51.a8=Q {#r}