Why did Black resign?

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ed1975

 

Things look about even and Black has some defence? By the way, this game is famous for the very strong White knight on d5.

AussieMatey

Black resigned because if 30...Qxh5 31.Nf6+ wins the Queen, and if Black keeps his Queen on the g file (the only option), then White's Qh1 and Rg1 is going to mate or win material or both.

ed1975

Thanks AussieRookie!

Rat1960
AussieRookie wrote:

Black resigned because if 30...Qxh5 31.Nf6+ wins the Queen, and if Black keeps his Queen on the g file (the only option), then White's Qh1 and Rg1 is going to mate or win material or both.

Yes. ... Qg6/7 to stop the mate has the price of queen for rook.