Why does this puzzle offer f8=R as better than f8=Q?

Answer by SQB for Why does this puzzle offer f8=R as better than f8=Q?

November 5, 2020, 12:05 am

It seems as if the puzzle is based on an actual game played between Jorden van Foreest and Martin Petrov in April 2019.If you click on the button to show the solution, it shows the full game, of which...

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Answer by post as a guest for Why does this puzzle offer f8=R as better than...

November 4, 2020, 11:34 am

It is a quirk/bug of the software used by that site to pick moves expected in puzzles.

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Answer by Inertial Ignorance for Why does this puzzle offer f8=R as better...

November 3, 2020, 4:40 pm

If anything, promoting to a queen is the better choice, as it forces Black to exchange their rook. For promoting to a rook, Stockfish NNUE actually slightly prefers moving the f5-rook away instead of...

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Answer by Christian H. Kuhn for Why does this puzzle offer f8=R as better...

November 3, 2020, 3:39 pm

For an engine, it makes no difference if you promote to a rook or a queen. In both cases, your advantage is huge. There is no real resistance for black, but his best chances, if any, are to give his...

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