context: 1. e2e4  1... c7c6  2. d2d4  2... d7d5  3. e4e5  3... c8f5  4. c2c4 One of White's many interesting lines in the Advance Variation of the Caro-Kann. 4... e7e6  5. b1c3  5... f8b4 A good option, but not forced. 6. g1e2 A rare move. Van Foreest is a known opening specialist, and he is usually the first to show a new idea.