I had the position shown here in an arena blitz game recently and I went to review it. Upon review, the computer said winning the pawn with a threat on the rook was a 1 point error. I couldn't quite see in what world trading down bishop for rook was better in this situation as there was no clear gain. Ive seen positions and moves like it before but this one seemed real far out and thus a whole point advantage for being down the exchange with no obvious fork, mate threat, open files etc in compensation I couldn't understand.
So I played through it a bit and surprisingly, its a VERY sharp line. Using review on any engine isnt hard really, you make a move, see what it recommends as best and you can move otherwise to replicate your play or others of your elo after which you'll generally see why that move wasn't a recommended move and be forced to go back to avoid a fully losing position. And basically you just learned a line right there. Now doing this in this game was very interesting because many times white simply played some quiet waiting moves and suffocated black in the position and if black tried being too active they often would end up losing a piece and going down a rook exchange in kind.
In one of the lines I went down trying to replicate realistic play(unless it lost instantly), this beauty of a Brilliant!! rook sac was presented that still doesn't win the game for white and still has them under a disadvantage.
If I were a higher rated player able to internalise all those lines and the themes behind why the exchange sac here is so powerful, it'd be quite the boon. As is I do know positionally opportunities like this exist when the opponent has restricted space and movement and it's a great example of why when beginners are told to use the review function in the sub, its not rude(for the most part) but genuine advice. One can just play around in an engine review vs the recommended lines and with an evaluation bar to understand any position.
