This game has only one inaccuracy!

Can you guess what it is?  First person to do so wins a prize!  It has no mistakes or blunders!  By white-black had a few. 

Was it Qb3 instead of cxd5?

no, Qb3 is good.  Hint-it looks like a harmless move. 

5 e3, perhaps, because it weakens dark squares on qside? At very least, it gives Black e4 - the N could jump in immediately. Maybe 5 ...Ne4 and, after 6 Nd2 (Nb3?!), Qa4. Probably Black has better than that:)

how are the queenside darksquares weakened?  e3 strengthens the center so they can't be attacked. 

This is from chess.com computer analysis-it only found 1 inacuraccy.

the chess.com computer analysis probably didn't find every single mistake. also some people are better with some pieces than other pieces. So if i like bishops trading it for a knight may not be a good idea. The computer doesn't know that.

I'd be cautious about using chess.com analysis... Frankly I dont know why they bother with it, apparently its a major drain on reasources and secoundly the job can be done both faster and better by simply downloading a GUI with Rybka.


In anycase, as for the "inaccuracy", I'd say 11...e6 is a mistake. I think Black has several possibilities: Bg4, Bf4, Be6, Qb6

I'll give you a quick look at Be6 since it seem the most interesting (if a little counter-inutitive)


Be6...

{a}...(Be6) Qb6 Qxb6 axb6 e5 Bg4 ...

{b}...(Be6) Qe2 Bg4

{c}...(Be6) Qd3 Nh5!? d5 Bf5...

{c1}  (Bf5) e4? Nxf4 Qe3 Bh6! dxc6 Qxd1 Rxd1 Nh3+ gxh3 Bxe3 exf5 Bb6 cxb7 Rab8
{c2}  (Bf5) Ne4?? cxd5
{c3}  (Bf5) Qd2 Nxf4 exf4 c5?!

In all these variations, I think black ends up doing ok.

I had a game with only one inaccuracy once.  Of course, it had five mistakes and a blunder, but only one inaccuracy.

1. d4

Yes it should have been 1. e4 e5 2. Ke2

Perhaps 4. Bf4 is the inaccuracy?

From a brief look, I'd guess the inaccuracy is either at 17. Be5 or at 20. gxf3

But then again, I basically forgot how to play chess - so don't trust me to determine inaccuracies.

Got an odd feeling it's 13.Bg3, perhaps it should have been Bg5?  My other guesses would be 16.Qc5 and 9.O-O.  Last one was half-joking .

If it's somehow 9.O-O, don't bother with the prize, the hint led me to seek out the most harmless move, and the most harmless move would probably be castling.

After 8... O-O, why not Bxf7+, then if Rxf7, Ng5?

Seems to me this wins at least a pawn...?

Guess the inaccuracy.  I like this type of puzzle.

I will guess 10. Rfd1.

Yes...I think this works nicely for White:

What about 21. ... a5.  It loses tempo in a game where whoever owns the g file pretty much owns the game?

I don't like 10. Rfd1 either. Better was 10. Be2 preserving the white-squared bishop