Chess Crossword (spaces are periods)

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Across
  1. 2. Hit a lineup on a diagonal
  2. 5. The best outcome when down 20 pts of material
  3. 9. To trap a piece to a king
  4. 10. THE ROOOK!!
  5. 12. In between move
  6. 14. "____ Resign Now"
  7. 16. Avengers
  8. 17. GothamChess' recommended beginner opening
  9. 18. Diagonal lineups with bishop and queen
  10. 20. Without a good square
Down
  1. 1. Hikaru's Former Rival
  2. 3. 1. e4 e5 2. Nf3 Nc6 3. c3
  3. 4. The all-knowing open source software
  4. 6. "Here's the ____s it starts with"
  5. 7. Pressure a piece that is stuck to king
  6. 8. O-O
  7. 11. "I literally don't even care chat"
  8. 13. Highest rank
  9. 15. A type of mate; usually executed with 2 rooks
  10. 16. A "forced" move
  11. 19. Check a king whilex attacking a piece behind itray