Puzzle of the Day 11 September 2020 |  Find the best move

1. Re7 Qxe7 2. Nxe7+ Bxe7 3. a3 Bd8 4. Qb3 Ra5 5. Qe6+ Kc7 6. b4 Rxa3 7. Qxf5 Be7 8. Qe4