Hey everyone, first time posting on this site:

A lot of you may be familiar with the KID game Piket-Kasparov, Tilburg 1989.  Here are the moves:

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.Ne1 Nd7 10.Be3 f5 11.f3 f4 12.Bf2 g5 13.b4 (I'm not sure if this position was reached with this particular move order) Nf6 14.c5 Ng6 15.cxd6 cxd6 16.Rc1 Rf7 17.a4 Bf8 18.a5 Bd7 19. Nb5 (given a ?! by Nunn + Burgess) g4 20. Nc7 g3 21.Nxa8 (given a ?) 21.Nh5 (!) 22.Kh1 gxf2 23.Rxf2 Ng3+! 24.Kg1 Qa8 25.Bc4 a6! 26.Qd3 Qa7! 27.b5 axb5 28. Bxb5 Nh1! 0-1

My question is, 22.Bxa7! (instead of Kh1) seems to be holdable for white.  Neither Fritz 7 nor I found anything other than rough equality (a very unclear game, to be sure): 22...Qh4 23.h3 Bxh3 24.gxh3 Qxh3 25.Rf2 gxf2 26.Kxf2 Rg7 etc., and it's unclear but probably about equal.  In any case doesn't it make all the punctuation before move 22 incorrect?  It probably doesn't matter too much as the opponents at my rating level (2000) don't have the knowledge of Piket or Kasparov, but I was still curious.

-Garrett