Puzzles where Opponent Blunders

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Avatar of khurst

So I have seen a few puzzles where the opponent does not make the best move, but normally  they aren't totally egregious.  This one I totally don't get.

https://www.chess.com/puzzles/problem/647298/practice

After Qg8+ why doesn't the king just go back to h5?  It does offer perpetual, but a draw is better than losing.  Moving the king to g6 is just a nonsense move.  

What am I missing here.

Avatar of Fire

 

Avatar of Fire