Unexplained moves

[Eric Wainwright]

I was reviewing a 10-game match between Hiarcs 14 vs Komodo 6 at time controls 60' + 30". In a loss to Komodo, Hiarcs seems to have experienced a curious meltdown in the middle of the game and then immediately resigned. Afterwards, I had Hiarcs analyze the last few moves of the game at 15" per move and it easily found better lines than the game. In the record below, move 38…Qa4 seems a little questionable, but then 39…Qd1 seems like an outright blunder. Can anyone shed any light on this?

[Event "Match 11 - G60+30"]
[Site "?"]
[Date "2013.11.29"]
[Round "4"]
[White "Komodo 6 64-bit"]
[Black "Deep HIARCS 14 WCSC"]
[Result "1-0"]
[ECO "B00"]
[TimeControl "3600+30"]

1.e4 Nc6 2.d4 d5 3.e5 f6 4.f4 Bf5 5.c3 e6 6.Be2 Nh6 7.Nf3 Be7 8.O-O O-O 9.Nbd2 fxe5 10.fxe5 Qe8 11.Ne1 Nd8 12.Nd3 b6 13.Nf4 c5 14.g4 Bg6 15.h3 Rc8 16.Nxg6 Rxf1+ 17.Qxf1 Qxg6 18.Nf3 Nc6 19.Bd3 Qf7 20.Bd2 Qf8 21.Qe2 Qe8 22.Rf1 Nf7 23.h4 a5 24.Be3 a4 25.a3 Na5 26.Bb5 Qd8 27.g5 Nc4 28.Bxa4 cxd4 29.cxd4 Rc7 30.Bb5 Nh8 31.Ne1 Ng6 32.Bf2 Rc8 33.Ng2 Kh8 34.Be1 Nf8 35.Ne3 Nxe3 36.Qxe3 Qc7 37.Bd3 Qd7 38.h5 Qa4 $6 { +2.87/18 } ( 38...Qd8 { +2.23/14 } 39.g6 h6 40.Rf7 Qe8 41.Kg2 Nd7 42.Qh3 Nf8 43.Qf3 Kg8 44.Bd2 Nd7 45.b4 Rc7 ) 39.Rf7 Qd1 $2 { +4.75/15 } ( 39...Qe8 { +2.68/17 } 40.Qf3 Kg8 41.g6 Rc1 42.Qe3 Rc7 43.h6 Bd8 44.Rxc7 Bxc7 45.gxh7+ Nxh7 46.Qg3 Qf7 47.Bd2 Kh8 ) 40.Rxe7 1-0

[Mark Uniacke]

Put simply HIARCS went wrong, Qa4 was a questionable move, maybe it was under some time pressure at that stage.

I have noticed HIARCS was not using its book and that is not going to help and will add to the time pressure. I assume you turned the book off.