1. c2c4  1... c7c6  2. g1f3  2... d7d5  3. e2e3  3... g8f6  4. b1c3  4... a7a6 The Chebanenko Slav, named after a prominent Moldovan coach, is one of the most important opening discoveries of the second half of the twentieth century. 5. d2d4 