Chess puzzle: an alternative for a bad Cordingley day

Just for a change, since today's Cordingley puzzle is a let down, here is one seen in Chess Today which is a far better puzzle.

White to play and win

Solution

This took me a bit of a while to solve. I first followed- got entranced by- fanciful lines starting with 1 Bb7 Qd1+, putting my king first on g2, then h2, before drawing a blank.

So, re-start, and apply Purdy's principles. Three LPDOs: Rd1, Bb7, Bb4; black king in a bit of a net, but at first I tried to get to it via h6/g7; then jump-checks and jump-smites, and Rd8+ became apparent, jumping over the Bd4: then I instantly realised that the Nh5 prevents black's king's escape to g7, so the solution became apparent: the line clearing 1 Bc5+! followed by 2 Rd8+ Rd8 3 Qd8 mate.

Nice.

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