This turned out to be a novelty.
1. c2c4  1... e7e5  2. b1c3  2... f8b4  3. d1b3 [%cal dd1b3][%c_arrow d1b3;keyPressed;none;from;d1;opacity;0.8;to;b3;persistent;false] \"A modern line and the first line of some chess engine.\" (Korobov) 3... a7a5  4. g2g3  4... g8f6  5. f1g2  5... e8g8  6. g1f3  6... b8c6  7. e1g1  7... f8e8  8. d2d3  8... c6d4 \"I was out of book—I did not know what to do.\" (Korobov)