Hallucinations

A positive hallucination is when you see something that is not there.

A negative hallucination is when you do not see something that is there.

That's my best explanation for the following game.

perrypawnpusher - molerat
blitz, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Kf8

 7.Qxe5 Qe7

Played twice by Alonzo Wheeler Jerome, defending against his own gambit, in correspondence games with Jaeger in 1888.

8.Qf4+ Qf6 9.Qg3 Bd6 10.Qe3 b6

11.Nc3 Bb7 12.d3 Bf4

Continuing to harass my Queen, Black makes an oversight, hanging the Bishop. Instead, 12...Re8 would retain Black's advantage.

13.Qe2

Negative hallucintation: simply 13.Qxf4 won a piece.

13...Bxc1 14.Rxc1 Ne7 15.0-0 d6

16.f4 Ke8 17.e5 dxe5 18.fxe5 Qe6 19.d4 Nd5 20.Qf3 Ke7 21.Qg3 Qg6 22.Qh4+ Kd7 23.Qh3+ Qe6 Black resigned

It is not clear why Black gave up: the game seems to be even,  but maybe he saw something that I didn't...