Annotated Chess Game 13414922 by moonbus

White: kshansen; Black: moonbus. Rating differential about 450 points. Notes by moonbus.

30... Qc8a6
In post-mortem analysis, Stockfish found a sharper continuation here: . . . f8(Q); RxQ, RxR; RxR, RxR; and if now QxR then . . . Qa6+ wins the White queen.
31. Kd3d2 Qa6a5 32. Kd2c2 Qa5a4 33. Kc2b2 Rf8b8 34. Kb2c1 Rb8b3 35. Rh1f1 Rb3xa3
Post-mortem: Stockfish found a forced mate in ten after . . . Rc3+.
36. Ra1xa3 Qa4xa3 37. Kc1d1 Qa3a1
Black dallies with some wasted checks, just to see whether White will blunder away his queen. He doesn't.
38. Kd1d2 Qa1b2 39. Kd2d1 Qb2b3 40. Kd1d2 a5
The a-pawn cannot be stopped.
41. Rf1xf2 Rf6xf2 42. Qe2xf2 Qb3b2
After Ke1, QxQ+; KxQ, the a-pawn runs home. White resigned. 0-1.