Watsonfox wrote on 03/22/09 at 16:58:12:
I normally play the semi-slav but I don't like to play it in must win games because of the exchange slav. Do you have any idea what I should play instead? I'm thinking of the Dutch or Modern Benoni. Also what books/DVDs should I get?
In each opening you will find a variation you do not like to play against. That's life. Going for the modern Benoni or the Dutch will not change anything to this constatation.
The Modern Benoni is even worse than the Dutch because white can always refuse it from.
Now before choosing an opening for a must win situation, you should first answer the questions TN has asked.
If you are good in tactics, king's-side fianchetto opening could suit you. Then you can choose between, for example, the possibly ugly positions of some dutch variations and the very easy to find plans of the Benoni/Benko. The Grünfeld and KID are also good opportunities for a tactical player.
If you like more passive but solid positions, you can go for e6 openings.
Another possibility, when afraid of the exchange variation, is to take the pawn on c4 and going for the QGA or the Slav.
Something I am always upset with is that many players think that they shouldp lay agressively from the very beginning in a must-win situation. Being patient, building a solid position, having clear plans and waiting for an inaccuracy of the opponent are often a better guarantee of winning than trying to sac 3 pawns and 2 pieces during the first 20 moves. And this rule is even more true for players used to play "calm" chess.
My conclusion: just try to play good in positions you feel comfortable with and never try without serious preparation something you never did before.