btw, white's actual move was 19. a3
I don't really want to go any further into the game because it's still an ongoing game, and I don't want to give myself any unfair advantage. But, we're only on move 21 now.
Why not Rg1?
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And yes, I realize it was a big mistake to castle when I did. Luckily, I came out ok even though I really think I should have lost my queen here.
I'm not interested in if there's a better move, but why would he say 19. Rg1 is a bad move?
He probably thought that after 19.Rg1 there isn't much the rook can do there and that black's queen is harmless. However, he probably did not see that after 19.Rg1 black's queen is trapped.
It looks trapped but seeing as the white queen needs to stay on that diagonal (otherwise black has the escape square h3) I think black can get the queen out with 19...Rd6 20. Qf5 Ne7.
I don't think it's bad, but I don't think you can win the queen without losing yours. Not computer checked though, could be wrong.
@Scottrf
In your line - 19...Rd6, I think White can play the intermediate move 20.Qe8+. If Black moves his King away, then 21.Rxg2. If he interposes his Rook with 20...Rd8, then White can just play 21.Qxd8+ Nxd8 22.Rxg2. White is a piece up after the dust settles.
Not as huge of an advantage as getting a Queen for free. But a huge advantage nonetheless.
Dualbishops
Ah yes, you're right, I saw Qe8+ but didn't think about the capture, just repeating the position.
So I'm playing this game, and this move has come and gone, and I thanked my opponent (who was playing white) for not moving Rg1. He said it would have been a mistake. Can someone explain to me why? It seems like a good move to me.