[%c_effect e5;square;e5;type;GreatFind;persistent;true] Once the d7-pawn is fixed, Black gets a typical Kann/Taimanov failure. His queenside is left workless, the huge hole on d6 is a wonderful spot for the white pieces, and the pawn on d7 itself becomes an eternal weakness.
1. d2d4  1... g8f6  2. c1g5 The Trompowsky will always remain an excellent choice for a blitz game. 2... c7c5  3. b1c3  3... c5d4  4. d1d4  4... b8c6  5. d4h4  5... e7e6  6. e1c1  6... f8e7  7. e2e4 And now we are suddenly in a Classical Sicilian type of position, with a white queen mysteriously teleported to the kingside instead of retreating to the d2-dquare. 7... e8g8  8. f2f4  8... h7h6  9. g1f3 [#] 9... f6h7 A novelty and a strategical resignation... 10. g5e7  10... d8e7  11. h4e7  11... c6e7 