At some point, when I was booting up a game of Magic or something, without prompting I asked myself "Will this be fun if I lose twice in a row?". The answer was no, so I closed Magic, and I've been asking it constantly every time I ask myself which game I want to play. A side effect of this is that I've been playing a lot more chess recently.
I'm black in this position from a Caro-Kann. I feel like I have a pleasant advantage (although in retrospect I didn't capitalize on it as much as I could have). Here, any beginner would find the only move Stockfish charcterizes as maintaining that advantage: Be7. But I'm no beginner, and this leads me to try a much less sound move, ...Qb5?!. I'm lucky, and my opponent misses the refutation (the game went 1. ...Qb5?! 2. Re1 Qxe2 3. Rxe2?? Rd1+ 4. Re1 Rxe1#)-- but in actuality, I'm losing quite badly now.
My idea with Qb5 is as follows: If my opponent and I play the logical moves 1. ...Qb5 2. Qxb5 cxb5, white won't be able to attack my pawn twice. This means that by the time they can muster anything reasonable, I can stack my rooks-- and they can't even develop their knight to d2. However, my tactic was ultimately unsound. Why can white wriggle out of Qb5?