|zanzibar: Featured on p5 of Horowitz & Reinfeld's <Chess Traps Pitfalls & Swindles> where Alekhine's position before 34...Nf4?? is identified as completely winning.|
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5r2 /1b1p2kp/1p6/p1pn1q2/P1BbN1p1/6P1/1P2RP1P/3Q1NK1 b - - 0 34
Actually moving the Black knight to any square off the f-file is winning (as is 34...b4) though c3 is best (then b4).
The multiple blunders by both players are blamed on "grueling" time trouble
<each player only had a few seconds for his remaining moves before the time control>.
I haven't looked too closely, but perhaps Black's (Alekhine's) first blunder is 32...Bd4 allowing 33.Nd6 when 32...Bxd5 wins a pawn outright.
Maybe Alekhine was partly blinded by thinking his attack on White's king was stronger than it really is?