A somewhat mysterious but likely useful move.
1. e2e4  1... e7e6  2. d2d4  2... d7d5  3. b1c3  3... g8f6  4. e4e5  4... f6d7  5. f2f4  5... c7c5  6. g1f3  6... b8c6  7. c1e3  7... a7a6  8. a2a3  8... b7b6 Quite a rare line. 9. g2g3  9... f8e7  10. f1g2  10... e8g8  11. e1g1 [#]