Daily chess puzzle: Check Mate # 85

Another puzzle from Dragoslav Andric's 1981 book “Matni Udar”.

White to play and mate Black (with a twist)

Hartlaub v Walle, Bremen 1923

Solution

'Fairly' standard today: just a bit of calculation required to put the moves into order, and one pretty move at the end. For what I mean by 'fairly', see tomorrow's post.

1 Re7! Qe7[] 2 Rf6!

2… gf[] 3 Nf5

3…Qe4

4 Qg5+! 1-0 since 4…gh 5 Nh6 mate.

Very pretty.

Puzzle

What's the twist?

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