Can't believe I won this game

What about it?

[Event "Rated Blitz game"] [Site "https://lichess.org/MJMxWbFD"] 1. e4 e6 2. f4 d5 3. e5 Nc6 4. Nf3 Bc5 5. c3 f6 6. d4 Bb6 7. Bb5 Bd7 8. Bxc6 Bxc6 9. Nbd2 f5 10. O-O Ne7 11. Nb3 Ng6 12. Nc5 Bxc5 13. dxc5 Nxf4 14. Bxf4 O-O 15. Nd4 Qh4 16. Nxe6 Rfe8 17. Nxc7 Qxf4 18. Rxf4 Rac8 19. Nxe8 Rxe8 20. Qh5 d4 21. Qxf5 d3 22. Qf7+ Kh8 23. Rg4 Rg8 24. Rf1 d2 25. Qf8 Bd5 26. Qxg7+ Rxg7 27. Rf8+ Rg8 28. Rf1 Bb3 29. axb3 Rxg4 30. e6 Re4 31. Rd1 Re1+ 32. Kf2 Rxd1 33. e7 Re1 34. c6 Rxe7 35. c7 Rxc7 36. Ke2 Rd7 37. Kd1 Kg7 38. c4 Kf6 39. b4 Kf5 40. c5 Ke4 41. b5 Ke3 42. c6 bxc6 43. bxc6 Rc7 44. Kc2 Rxc6+ 45. Kd1 Rc1# 0-1

How is this not checkmate?

What about it?

I know absolutely nothing about chess, but I'm doing a puzzle and i moved rook from F8 to F1 and it says I failed, am I missing something obvious here?

My first accidental checkmate

What about it?

(I was the white pieces)

Idk

What about it?

I just started playing chess last night and I'm confused on how this is a stalemate, can anyone help me understand?

My first accidental checkmate

What about it?

(I was the white pieces)

This is not a brilliant move but it’s still cool.

Angry Pawn

Happy to find this checkmate

Can you see the beautiful sequence that I missed in this game? Black to play.

Why is this brilliant?

why is it a brilliant move?