George Duke wrote on Thu, Apr 11, 2013 04:34 PM UTC:
Move 23 is where White goes wrong. '23 a4...' does not do anything right
away as needed by the provoking h-Pawn the other edge of board. '23
Nxb7' is the correction. Because of threat the same Knight then to d6,
Black Queen has to take the sacrificial Knight at once.
Reti versus Alekhine year 1925,
http://www.chessgames.com/perl/chessgame?gid=1012326.
So both sides have not better follow-up than 23 Nxb7 Qxb7 24 Nxc6..., upon
which White is down a point but poised better than Black. White
continuation may grab Knight-d5 or Bishop-g4, and Black Queen is put out of position. In particular, no longer pawn-protected, Black Knight on d5 has only retreat squares available, all three of which block own Queen or Rook.
Back to the surf board from the chess board, because vaunted Reti-Alekhine another imperfect game.
Next, where does Black go wrong? Http://www.chessgames.com/perl/chessgame?gid=1284171.