iamdeafzed: My patzer-level chess analysis, without using software:
5...Bxc3: Not sure if this is/was part of theory, but giving up the dark-square bishop so early seems a bit controversial to me, given the Dutch's penchant for dark square weaknesses (maybe that's primarily the Stonewall variation?) At any rate, it did at least inflict doubled-pawns.
14...Rf5: I'm not entirely sure what the purpose of this move was, other than to perhaps vacate f8 for the knight. Provoke white to weaken his king with g4, maybe?
19.Rb1: Not fearing the materialistic Qxa2 reply because 20.Ra1 would trap the black queen on the b-file. I guess. Though Alekhine did grab that a-pawn a couple moves later, after clearing the center pawns a bit.
29.Qxd3: Not sure what an engine would "think" but this move looks a bit suspect to me, as it gives Alekhine connected passed pawns. I suppose white is arguably already lost at this point anyway though. Keeping the queens on doesn't look too pleasant either.
30...h5: Good move by Alekhine that undermines f5. Which ultimately allows him to untangle his bishop from the rook pin.
35...Nxd4!: Great move by Alekhine. Taking the knight would allow the d-pawn to march to d2 and ultimately to promotion.