[%c_effect g4;square;g4;type;GreatFind;persistent;true] Which should not be allowed.
1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... g8f6  4. c4d5  4... e6d5  5. c1g5  5... c7c6  6. e2e3  6... f8e7  7. f1d3  7... b8d7  8. d1c2  8... f6h5  9. g5e7  9... d8e7  10. e1c1 A fascinating version of the Carlsbad pawn structure. Both sides castle on the long side. Everything turns upside down. Instead of the common plan of a white minority attack on the queenside, she might rather prefer to attack on the kingside. 10... d7b6  11. h2h3  11... g7g6  12. g1f3  12... h5g7 Black is ready to solve the problem of her bad bishop.