Benko Gambit Accepted Pin in Chess

A benko gambit accepted pin is a tactical motif that arises after Black accepts the Benko Gambit (typically 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5). In the accepted line, the resulting piece placement often allows Black to pin a White piece (commonly along a file or diagonal) so it cannot move without losing material or allowing a decisive follow-up. The defining feature is that the accepted pawn structure and open lines give Black a direct pin target.