1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. a4c6 [%c_effect c6;square;c6;type;Interesting;persistent;true] No surprises in Ding's opening choice—we were all expecting a classic 1.e4 e5. But Nepomniachtchi shows his weapons already on move six. He had never played the \"Delayed Exchange Variation\" before.