18126 Players currently online!
Man vs. Machine - good luck!
Turn-based games at any time!
Vote for the best move to win!
Do you have what it takes?
Backgammon, Yatzy, and more!
Sharpen your tactical vision!
Get advice and game insights!
Learn from top players & pros!
View millions of master games!
Your virtual chess coach!
Perfect your opening moves!
Test your skills vs. computer!
Find the right private coach!
Can you solve it each day?
Bring it all together!
Beginners, start here!
Make friends & play team games!
News from the world of chess!
Search all Chess.com members!
Find local clubs & events!
Who's the best of your friends?
Read what members are saying!
I noticed that there is a Semi-Slav tournament coming up and it says that all opening moves must be these:
All games start with the Semi-Slav,
1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6
However the book opening says this:
Also the chess website agrees with the book opening.
The opening that uses c6 instead of e6 is actually called the slav.
So, it appears that there was a mistake and the name of the tournament should be changed to the Slav instead of the Semi Slav.
Something is weird. I investigated the semi slav after I saw the invitation for the tournament. I am an e4 player as white and play the Nimzo or Queens Indian as black against 1 d4 so I'm really not terribly familiar with the Slav or the Semi Slav as it isn't part of my arsenal.
However, I am noticing now that those differences exist in which opening is which.
I pulled out Modern Chess Openings 14th edition and it gives the following moves:
Semi-Slav: 1 d4 d5 2 c4 c6
Slav: 1 d4 d5 2 c4 c6
IM Silman's Complete Book of Chess Strategy agrees with it.
What is the difference? Why do these other sites claim that the Semi Slav is 1 d4 d5 2 c4 e6?
So is it that the chess website and the book opening recorded on chess.com are wrong?
Someone is wrong. 2...c6 and 2....e6 are very different moves. Which is the right one for the semi slav?
Semi-Slav is pretty much a mix between a Slav and QGD pawn structure to begin with. Notice in both your lines in the start end in exactly the same position? The only difference is in which order you move the pawns.
I think when you play c6 you leave yourself with the option to play either the Slav or Semi-Slav and when you play e6 you have the option to play a QGD or a Semi-Slav.
Semi-Slav is part of the QG and Semi-Slav may arrive from the Slav.
Semi-Slav is charactreized by both ...e6 and ...c6 (forget about move order).
1.d4 d5 2.c4 (Queen's Gambit)
1.d4 d5 2.c4 c6 (Slav)
1.d4 d5 2.c4 c6 3.Nf3 e6 (This may become Semi-Slav or just QGD/Slav or even just English)
1.d4 d5 2.c4 c6 3.Nc3 e6 (This may become Semi-Slav or just QGD/Slav or even Caro-Kann)
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 (Semi-Slav from Slav)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 (Semi-Slav from its own, same position as above)
That makes sense. Thanks.
The best way to simplfy is no matter the number of moves if black puts in e6 it will probably transpose to the semi-slav,qgb ect.Thus the tournament moves were correct. Had e6 not been played it probably would have been a slav opening.
Although after c6 most people play KNF3 not KNC3. Both are good.
Alexey Dreev uses this move order :
1.d4 Nf6 2.c4 c6 in his book The Meran & Anti-Meran Variations.
Those should all be slav move orders as d5 will be next for black. Although getting off track here the move order D4 KNF6 C4 C6 NC3 E6 NF3 BB4 is the Nimzo G3 or F3 lines
yusuf_prasojo is correct. Don't be confused by move order - there are any number of reasons players adopt one particular order over another which have nothing to do with the specific opening we are discussing. The Slav proper employs an early ...dxc4. The Semi-Slav does not, ...e6 is played immediately instead. Obviously either one can arrive from the same first moves, and can even transpose later. But that's the difference, what makes each a unique family of opening lines.
The tournament designation is fine. They just picked one of several move orders to reach the starting position, which is the Semi-Slav.
One important thing to consider is that opening variations are characterized first by pawn structure, and then by piece position, rather than by the actual move sequence leading to them.
the move to e6 will in most cases be a semi-slav move
The only way to play a true semi slav is by passing one move, and then playing c6 and e6 in one go. Both e6 and c6 will brush on the QG and the Slav, so this problem cannot be avoided.
I have one book that starts the semi slav with e6 and one with c6. So really it doesn't matter. Should white exchange in either case, it won't be the same opening. If white does not, the semi will be reached.
Part of the question of which move order to pursue comes down to whether you'd rather face the QGD exchange or the Slav exchange as black. They have very different characters, and very different plusses and minuses.
Top 7 Aggressive Openings
by ThrillerFan a few minutes ago
Reporting Moderation Abuse
by VibrantMoves a few minutes ago
If you could only ask one question on chess.com, what would it be?
by winerkleiner 4 minutes ago
How do I start a thread?
by didibrian 5 minutes ago
10/6/2015 - No Interest In Her
by sard2342 9 minutes ago
by NeverSawIt 12 minutes ago
How to stop CHRONIC trolls on chess.com
by I-USE-PROGRAMS-LOL 12 minutes ago
Why the Benko Gambit is so awesome!
by Arjun316694 20 minutes ago
by I-USE-PROGRAMS-LOL 24 minutes ago
The Hnerf Attack
by TheronG12 29 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2015 Chess.com
• Chess - English
We are working hard to make Chess.com available in over 70 languages. Check back over the year as we develop the technology to add more, and we will try our best to notify you when your language is ready for translating!