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I spent almost an hour trying to solve this one:
It's "just" a tempo problem btw (a very good tempo problem, don't misinterpret), after all possible black moves there is mate - except for one (unpinning the rook). Just find that mate too and you're set
Ah, I missed that one when someone posted it last year. But yes, I soon saw that it was almost a zugzwang position, and I eventually found the right move after trying all kinds of waiting moves first. Still, a good exercise.
I found the solution after many tries, but anyway I'm very surprised that there is a mate in two that chess engines can't solve... (if I run the analysis I get Bxe4 which is mate in three)
Which engine(s) did you use?
Hunt around, find that you don't have a response to e5 because Bb6+ can be taken by the no-longer pinned rook, and then it becomes easy.
Nice problem though :)
When I wrote that, I was using Robbolito which is not able to found the mate in two... but I just downloaded the latest Fire, and this one instead has found the solution
Qg5 was a mate in 3 because black has Ra6+, neat solution that I didn't find.
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