I wanted to vacate a square for my dark-squared bishop, although perhaps Qb6+ is good as well.

White's light-squared bishop is incredible strong here.

? Wrong move by me. Ng6 is potentially better, or perhaps d4. I'm losing a pawn due to my pinned e6 pawn.

With the intention of e5 fxe5 Rxe5. Nf6 is viable here as well.

Puts the knight on a good square while threatening the family fork of Ng3+.

I wanted to double my rooks, so moved the rook to d6 in case white tries to play f6.

With this move my knight is attacked by his queen in a discovered attack.

? I probably should not have retreated the knight to this square. A better move may have been to defend it with the queen.

My knight which was on a great square is now gone, and all he lost in return was his lackluster knight.

Perhaps I could have recaptured with the pawn instead. On f6 my queen is covering a lot less squares than it was on d6. If I took with the pawn then my critical central passed pawn would have a defender.