This was my win in 7 moves, but I didn't put it in the showcase, since I didn't win due to some particular skill to show off with, rather due my opponent's mistakes. My question is - where did he go totally wrong? I thought I could learn by his mistakes, if you point out what his worst blunder was. Blocking the check with the bishop? Doesn't this resemble scholar's mate?

3 ... Nc6  then 4. Qe5+ loses the queen

Seems to me 2 ... c5 is not very good, it only forces white to move the Queen to a safer square at best. In your case an attacking square.

I don't know a great deal about the Centre counter but 3. Qxd4 seems abit weak

 

3...c5 (Nc6 better) and 4...Be7 (Qe7 better) are bad, but 5...d6 is the whopper; it loses immediately. 5...Nf6 heads off your attack and maintains a small advantage. In addition, 6...Bf6 shortens the game by allowing Mate in 1, but isn't as bad as 5...d6. 6...Be6 is called for instead, though he's still losing. Also, 5.Bc4 by you is a blunder against a good player, throwing away some of your advantage; an immediate 5.Qxg7 is called for. Otherwise, you played the right moves in an early Blackmar-Diemer Gambit.

Magicmunky wrote:

I don't know a great deal about the Centre counter but 3. Qxd4 seems abit weak

 

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Center Counter, or Scandanavian Defense, is as follows: 1.e4 d5 2.exd5 Qxd5 or 2...Nf6. http://en.wikipedia.org/wiki/Center_counter

 

The game above is the Blackmar-Diemer Gambit :1.e4 e5 2.d4 exd4 with 3.Nc3 and 4.f3 to follow. 3.Qxd4 is not favored, but is playable. http://en.wikipedia.org/wiki/Blackmar-Diemer_Gambit

Clownfish wrote:

This was my win in 7 moves, but I didn't put it in the showcase, since I didn't win due to some particular skill to show off with, rather due my opponent's mistakes. My question is - where did he go totally wrong? I thought I could learn by his mistakes, if you point out what his worst blunder was. Blocking the check with the bishop? Doesn't this resemble scholar's mate?

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sushijunkie wrote: ... 5.Bc4 by you is a blunder against a good player, throwing away some of your advantage; an immediate 5.Qxg7 is called for. ...

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 This is an important little part of the game. It is a good habit to play the best move that you can think of even against a weak player. Otherwise there is a danger that you get into a habit of playing badly. Therefore I certainly agree that 5. Qxg7 is called for.

This was not the Blackmar-Diemer gambit which goes 1. d4 d5 2. e4. This was 1. e4 e5 2. d4 which is called the Danish gambit.

Sorry Sushijunkie, I got the Centre counter and Centre game mixed up;

http://en.wikipedia.org/wiki/Centre_Game

 

Instead of 4...Be7,  Black must play Qe7.

Thanx for much interesting input! It seems that it is indeed called the Centre Game, while it would've been the Danish Gambit if I had offered a pawn on c3 instead of taking his pawn with the Queen. On Wikipedia, it sais: "Black's next move is almost always 3...Nc6", which you have suggested above.

It is interesting to hear you say that one should always play the "best" move immediately, and not save it for later, while backing up and making it stronger, but risking not to be able to make it. If I wouldn't have done 5. Bc4, but 5. Qxg7, his Bf7 would have come earlier and actually been a problem! 5. Bc4 made him waste a 5. d6, but I guess you mean that, of course, I should not trust someone to make that blunder. I was lucky!

 Thanx again for your input!