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  3. A satisfying mate :)

[Event "Rated Rapid game"]
[Site "lichess.org/hCve4aH6"]
[Date "2018.11.29"]
[Round "-"]
[White "denniss"]
[Black "General-Advance"]
[Result "0-1"]
[UTCDate "2018.11.29"]
[UTCTime "12:44:51"]
[WhiteElo "1504"]
[BlackElo "1535"]
[WhiteRatingDiff "-10"]
[BlackRatingDiff "+11"]
[Variant "Standard"]
[TimeControl "900+0"]
[ECO "B20"]
[Opening "Sicilian Defense"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. e4 c5 { B20 Sicilian Defense } 2. d3 Nc6 3. Be3 e6 4. Nf3 Nf6 5. Bg5 Be7 6. Be3?! { (-0.65 → -1.27) Inaccuracy. Best move was Be2. } (6. Be2 h6 7. Bf4 g5 8. Bg3 Nh5 9. c3 d5 10. Nfd2 Nxg3 11. hxg3 a6 12. Kf1 b5) 6... Qc7 7. h3?! { (-0.80 → -1.31) Inaccuracy. Best move was Nc3. } (7. Nc3 d5 8. exd5 exd5 9. d4 c4 10. Be2 O-O 11. O-O Re8 12. a3 Bf5 13. Qc1 h6) 7... d5 8. exd5 exd5 9. c3 O-O 10. Qd2?! { (-1.13 → -1.76) Inaccuracy. Best move was Be2. } (10. Be2 Bd7 11. Nbd2 Rfe8 12. O-O Bd6 13. Re1 h6 14. d4 c4 15. b3 Rxe3 16. fxe3 Bg3) 10... Re8 11. g3? { (-1.29 → -3.87) Mistake. Best move was Be2. } (11. Be2 Bd6 12. Na3 a6 13. O-O h6 14. Nc2 Bf5 15. Rfe1 Rac8 16. Rad1 b5 17. Nh4 Bd7) 11... d4 12. cxd4?? { (-3.65 → -7.25) Blunder. Best move was Bf4. } (12. Bf4 Bd6+) 12... cxd4 13. Bf4 Qb6 14. Qd1?? { (-6.85 → Mate in 1) Checkmate is now unavoidable. Best move was Be2. } (14. Be2 Bb4 15. Nc3 Qa5 16. Kf1 dxc3 17. bxc3 Bxc3 18. Qd1 Bxa1 19. Qxa1 Qa6 20. Qb2 Qb6) 14... Bb4# { Black wins by checkmate. } 0-1

Hi everyone, first time posting here. I played a game with a cool (by my low skill standard) mate I wanted to show. Also curious to see what experienced players thought of 6. Qc7. I'm always paranoid about e5. Any thoughts welcome & thanks for reading!

Cool mate! White was way too slow with developing, wasting several moves on his queen's bishop, while you made natural moves and swiftly punished him for his poor opening play.

As for 6... Qc7 stopping a potential e4-e5: I suppose it wasn't really a "threat" for white at this point (having already wasted many moves on the bishop), but yeah it does not hurt to already put the queen on a better square, overlooking e5 and f4.

White playing e5 in such positions is always double-edged, and whether it is good or not depends a lot on the concrete characteristics of the position. Usually e5 gains space, retricts your pieces and gains a tempo on your knight, but at the same time his pawn becomes vulnerable, and can be traded off with a timely f7-f6 or d7-d6 in case of emergency. Depending on the concrete position it can be good or bad for white.

Here for instance 6... O-O 7. e5 can be met with 7... Ng4, attacking the pawn (and the bishop on e3). If 8. Bf4 then 8... f6 threatens to win the e-pawn, and after the forced 9. exf6 Bxf6 you threaten 10... Bxb2 winning a pawn, and you threaten a discovered attack on Bf4. So 10. c3 can still be met with 10... Bxc3+.

That said 6... Qc7 is of course a perfectly logical move. In this case I just think you didn't have to worry about e5 just yet.

Development is rule in chess, you fail this and you will be punished for that, so simple.

Thanks alot for your input! I just looked at the sequence you spoke of and hadnt considered that response to e5 after 0-0. I think I was being overly defensive as I usually worry about my king knight being off f6. Thanks again, I'll keep what you've said in mind in future. @thijscom

I was taught development is like a race and have tried to stick to that as much as possible! @zorba7676