The King's Indian and the Gr nfeld are two of Black's most popular answers to 1 d4; unsurprising given that they were long-time favouritesof chess legends Garry Kasparov and, before him, Bobby Fischer. Brimming with complexity and dynamism, these two openings often leave those playing White scratching their heads wondering how to squeeze even the slightest of advantages out of the opening and, just as crucially, how to avoid becoming swamped in a...