http://www.w3.org/ns/prov#value | - This leads to openings such as Alekhine's Defense ??? in a line like 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 (the Four Pawns Attack), White has a formidable pawn center for the moment, but Black hopes to undermine it later in the game, leaving White's position exposed.
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