Alekhine Defense Osullivan Gambit Intermediate (1.e4 Nf6 2.e5 Nd5 3.d4 b5 / 1.e4 Nf6 2.e5 Nd5) in Chess

The alekhine defense osullivan gambit intermediate is an obscure sideline in the Alekhine Defense, but its exact move order is not widely documented in standard references. For an intermediate player, the important point is that it belongs to the 1.e4 Nf6 family and usually involves White trying to seize space early while Black challenges that center with the typical Alekhine counterattack ideas. Because the precise defining move sequence is not consistently standardized, this variation is best understood as a rare branch rather than a heavily analyzed mainline.