TopNotch wrote on 06/20/21 at 22:17:06:
L'Ami did a Benko DVD for Chessbase that was quite good. As a practical weapon the Benko is still useful but it is creaking theoretically in a number of places, so choose your opponents carefully.
My ten-yer old post (with minor modifications) is still valid:
I have played Benko 38 years. In the good old days people took the pawn and I was winning almost every game. Many players avoided it against me and played e.g. 2.Nf3. Nowadays Benko feels very different.
Glenn Flear: "Again we see the problem for Black in the Benko Gambit Accepted: If White is well-prepared, he can keep Black's dynamic activity in check and gradually make progress. This explains why top level players are reticent to play the Benko on a regular basis: Black's winning chances are perhaps not much better than in more 'solid' openings and he may have to play many moves with little to show for the pawn deficit."
I agree.
Despite its defects Benko used to be until recently nice at least against lower rated players, but what openings are not. Nowadays also lower rated players usually know how to minimize black's activity.
How often does one nowadays meet comfortable benko-like positions, when white has so many uncomfortable ideas such as 4.Qc2, 4.Nf3, 5.b6, 5.e3? Moreover, even the "real Benko" -variations with 5.ba are better for white. The old main line with 12.a4 is simply better for white and Perunovic's line is neither good enough for equality.
Benko is also very committal. You cannot play fluent positional chess: at some point you often just sit and wait, or you decide to make a highly committal -c5-c4, -e7-e6, -f7-f5 -move when you either get more activity or lose quickly.