You can actually share chess.com puzzles by copy and pasting the web address of the puzzle itself, or you can use the analysis board to create a pgn diagram of it:
https://www.chess.com/article/view/how-to-use-the-chesscom-diagr
I'll create a diagram to show what this looks like and I'll type my thoughts into it as the "Comment" button.
You can actually share chess.com puzzles by copy and pasting the web address of the puzzle itself, or you can use the analysis board to create a pgn diagram of it:
https://www.chess.com/article/view/how-to-use-the-chesscom-diagr
I'll create a diagram to show what this looks like and I'll type my thoughts into it as the "Comment" button.
Thank you, unfortunately pasting the URL has never worked for me. Must be something small I am doing wrong. Anyway, I appreciate the thorough explanation, I see what you mean. Not sure how I missed that, but then again I miss a lot of things 
.
The way to consider this solution is that in the final position, White is up by a piece. The knight on d7 is not trapped because it can capture a bishop on f8.
So White has won a piece.
Yes, I find that I have big trouble calculating these long capture-recapture sequences. Very often in live games there will be a flurry of such moves similar to in this puzzle and at the end suddenly the opponent is up +3 and I have no idea how until after the game I have to go back and review very closely.
Yes, I find that I have big trouble calculating these long capture-recapture sequences. Very often in live games there will be a flurry of such moves similar to in this puzzle and at the end suddenly the opponent is up +3 and I have no idea how until after the game I have to go back and review very closely.
Try to think ahead on all captures. He takes a piece, I take a piece, like this. Go as far as you can, and try to visualise the final position. Blunt calculation, you'll get better at it.
That's not saying how it will always play out though, there might be some zwishenzugs to account for, but it will give you a baseline to start with, and then before you play the move you can check the details.
Maybe I am missing something but isn't this a completely equal exchange? I can see that at the end of the official solution sequence, white is up by a knight, but white's knight on d7 is trapped. On the next move, black should simply move the bishop to safety. I can see nothing that white can do to protect the knight on d7, black can comfortably recapture after removing the bishop from danger and then the sides are equal on material (in fact black still has the bishop pair which helps balance out potentially losing castling rights to capture the knight). This is puzzle ID 1105856, sorry, I have trouble figuring out how to post the fancier interactive boards.