This looks like a Benko gambit
To me it rather looks like a load of nonsense - especially this 4.c4 move which does Black the favour to deny the c4 square to his own pieces (e.g. the b1 knight).
This looks like a Benko gambit
To me it rather looks like a load of nonsense - especially this 4.c4 move which does Black the favour to deny the c4 square to his own pieces (e.g. the b1 knight).
I'm inserting an inspiring benoni video https://youtu.be/x0TDJK973ms
In a must win with black situation: down 0-2 in a 24 games match
https://www.chessgames.com/perl/chessgame?gid=1044727
This looks like a Benko gambit, when White gives back the pawn, at least the pawn structure is quite similar - 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.b6
But Black is some "tempos" down, as White has already played a4, Nc3 and e4.
Yeah, that’s why I don’t trust 2...b5. Loses too much development.