1. e2e4  1... e7e5  2. g1f3  2... g8f6  3. b1c3  3... b8c6  4. f1b5  4... c6d4 Rubinstein's move is considered to be the most reliable weapon against the Four Knights. 5. b5c4  5... f8c5  6. f3e5  6... d8e7 