[Event "BCCC 2017"]
[Site "Mechanics Institute"]
[Date "2017-05-18"]
[White "Peter Lumsdon"]
[Black "Kevin Perrin"]
[WhiteElo "1724"]
[BlackElo "1573"]
[Result "0-1"]

1.e4 d5 2.exd5 Qxd5 3.Nf3 Nf6 4.Nc3 Qa5 5.Be2 e6 6.O-O Be7 7.d4 O-O 8.Bd2 c6 9.Re1 Nbd7 10.Bd3 Qh5? {Qc7 preparing c5! is tried and true} 11.Ne2! {White now has a clear lead until the blunder on move 38} Bd6 12.c4 b5 13.Nf4 Bxf4 14.Bxf4 bxc4 15.Bxc4 Bb7 16.Rc1 Rac8 17.Bd6 Rfe8 18.Qb3 Nb6 19.Bd3 Red8 20.Rc5 Qh6 21.Bg3! {Black gets enough for the queen after 21.Rxe6,fe 22.Qxe6+,Kh8 23.Ne5 which at first sight looked tempting} Rd5 22.a4 Ba8 23.Ba6 Re8 24.h3 Nbd7 25.Rxd5 Nxd5 26.Re4 f5 27.Re1 f4 28.Bh4 Rb8 29.Qa3 Nb4 30.Bc4 {e6 of course, and a combinative finish to the winning position. However simply Bg5 and taking on f4 is apt.} Nf8 31.Qc3? {PLStill  31.Bg5! White had nothing to fear from 31. ...Nc2 which loses to Qd6. (BvR) Not sure, Peter. White is clearly better, but perhaps had too many options to improve the (very complicated) position. 31.Bg5 is unclear imo (31.Be7 is perhaps even better), for instance Qg6; 32.Bxf4, Nc2;33.Qd6(?), Nxe1; (threatening checkmate on g2) 34.Nxe1, Rxb2 wins for black.(If 32.Bxf4,Nc2 I'd have to have dropped the light squared B back to d3 Bas; my Q is on a3 , black's Q on g6 and 33. Qd6 would indeed be wrong now! Don't ask me what I would have played instead as I don't know! Yes I had many options and it's hard to recall exactly what I dismissed and took on board.) (BvR). 33.Bd3 (after 32...Qg6) would have been a mistake because of 33..Nxa3; 34.Bxg6, Rxb2; 35.Bxc2, Rxc2; 36.Bxf4 and 37...c5 or Ra2. I believe that  white here has lost all its advantage and has to fight for a draw even. PL Sorry we're crossing wires.To clarify:
   Instead of 31.Qc3 I could have better played 31.Bg5 which is extremely tricky and took too much of my time before I dismissed it. 
  If 31...Qg6  then 32.Bxf4,Nc2 is what I think we are considering. Then 33.Bd3 and the black c2 N takes the white Q on a3 in reply 34.Bxg6,Rxb2 is good for white! 
   35.Bd3 traps the N which is now on a3 and if 35...Rb2-b3 then white could play Re3 and expect to win. 
   This is hypothetical as I may have missed stuff and only went as far as when the Q's  went off and it's only now I see that this possible position would show black's pieces poorly placed, and losing.} Nd5 32.Qd2? {White should simply have traded the N and played Qc5 or Qc7 depending on how black recaptures (BvR) No need for a question mark: white is still comfortable ahead, but he seems to be indecisive} c5 33.dxc5 Rc8 34.b4 {(BvR) A mistake missed by both players: 34...Nxb4!35.Qxb4, (or Be7), Bxf3 and 36...Qxh4 ( PL If 34... Nxb4 then 35.Rxe6,NxRe6 36.Qd7 followed by Ng5 or e5 and black is mated or loses Q.    I spent far too much time looking at all this searching for nice finish rather than being work-a-day, which , when you think about it, isn't the way if you want to win. Trappychess and sacrificial attacks can be alright for fun, which is what I often want to do. It blew up in my face this time! But I still like interesting positions where both players can just play chess.)} Bb7 35.Qd4 {...appeared to be gaining a decisive edge... (The engine algorithm Stockfish agrees with Patrick Cook with a value of 4.5 for white, whatever that's worth!?)} Nf6? {A mistake in a fascinating position, though understandable on the basis of allegro finish. Now white  must act with Rxe6 but confusedly my brain switched off! Had the black B(b7) both capturing on f3 and also recapturing my bishop that had taken his rook on c8. So 36. Rxe6 was never played and a comedy of errors continued with a now mis-timed 36 Bg5. (BvR) 36.Rxe6 wins instantly for white. Without  ifs or buts.., 36.Bg5 is still clearly winning, though} 36.Bg5 Qg6 37.Qxf4? {(BvR) 37.Rxe6 again} Bxf3 {Ironically Rxe6 still wins easily!} 38.Qxf3?? {(BvR) For a while white had lost control, overlooking the Rxe6 tactical win 3 times. After 38.gxf3, h6, he still could have played 39.Rxe6 and win ( PL Brain snap? Fingerslip? Tired? Ill? Clock trouble?These are all excuses we can use. Simply, I was confused when I took with the Q. it was reflex lightning probably as I can't take on f6 and at the time I'm seeing nothing else!
Chess is a good fun game: sometimes you win and sometimes you lose! My timing and concentration from move 31. and onwards was obviously bad and  sometimes I'm more focussed. So what? )} Qxg5!! {...before great tactical alertness by Kevin won a piece and his nimble Queen snuffed out Peter's last chance (Round 5 synopsis of games by Patrick Cook)} 39.Qb7 Rd8 40.Qxa7? {Instead c6! Passed pawns must be pushed is the mantra  and here it may have offered a fighting chance. But the 33rd piece is the clock and bad/good moves are history.} Nd5 41.b5? {Didn't see it going to f4, but white is now lost anyway.} Nf4 42.Qb7 Nxh3+ 43.Kf1 Nf4 44.Qe4? {g3 offers more resistance, though black has a straightforward win now.} Rd4!! {Nice!} 45.Qf3 Rxc4 46.c6 Rxa4 47.b6 Qb5+ {#R}