[tarentel]

Chess puzzles always have one solution. I don't know how this game was picked but the solution to this particular puzzle is the only solution. There are certainly other moves that could be played in this position but they are all losing as far as I can tell. Assuming every position from every game chosen is like this it sort of makes sense but as someone who does a lot of chess puzzles I don't see how this is much different from just normally doing chess puzzles.

[indigo945]

No, I am pretty sure you are wrong. Rb6 Rc8 .. Rxe6 Rxc7 .. Rxf6 was played in the game, but Rb6 Rc8 .. Qb7 Qe8 .. Rxf6 is an alternative line with the same idea.

OK, I just checked, the computer says I'm wrong. I am wrong because black can instead go Rb6 Rc8 .. Qb7 Qc4 .. Rxf6 Qxf1!.

Also, you're still at least a bit wrong because the computer thinks since black is already losing, it should go for Rb6 Re8 .. Rxe6 R8xe6, black giving up the queen for the rook in order to protect the bishop in the end. But yes, that's a computer idea.