[%c_effect c6;square;c6;type;Interesting;persistent;true] Usually this is not a good square for the knight in similar pawn structures, but Black has a specific idea: to prepare …e6-e5.
1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. g1f3  3... a7a6 A modern way of playing the Queen's Gambit. 4. c1g5  4... f8e7  5. g5e7  5... d8e7  6. e2e3  6... g8f6  7. b1d2  7... e8g8  8. a1c1 