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Error in puzzle 23307

Instead of 3... Qf2 I played 3... R8f2 but this was considered a wrong answer, though both moves lead to a forced mate in 4.
It has become apparent to me that these problems are generated by a very quick scan of played games by an engine. Any position, like this one, where calculating an alternate mate takes a bit longer to figure out, will be miscalculated.

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