Here are a two tactics from the Alex Fishbein simul that was held at the Denver Chess Club. I also included some tactics from this simul in my Tactics Time Newsletter, which you should sign up for if you haven’t already. Each newsletter contains an original tactics problem taken from real games.
See Answers Below
Tactic #1 Answer: Here Black just tried to get fancy on the previous move with 15. ..Rxe5. Black saw that White cannot capture the Black Queen on d7, because of the back rank mate threat of Re1#.
However, White can play 16. Bf4 which attacks the rook on e5, and connects the rooks, eliminating the back rank mate problem, and making the threat to the Black Queen on d7 real.
Black does not have time to move their queen, and rook at the same time, so will lose the exchange.
Tactic #2 Answer: White can trap the black bishop with 10. c5