Disenchantment in the Opening: The End of 3...b5 in the QGA? by FM Dennis Monokroussos
In chess and elsewhere, it sometimes turns out that a clever and beautiful idea has a fatal flaw. Finding the flaw may not be easy, but once it’s spotted the idea must be retired. This may be the case for the line 1.d4 d5 2.c4 dxc4 3.e4 b5, intending an exchange sacrifice. It has been trendy since 2014, but this game, along with the companion game Huschenbeth-Haast, may have put it out of business.