The Slav Defense is a chess opening that begins with the moves:
The Slav is one of the primary defenses to the Queen's Gambit. Although it was analyzed as early as 1590, it was not until the 1920s that it started to be explored extensively. Many masters of Slavic descent helped develop the theory of this opening, including Alapin, Alekhine, Bogoljubov, and Vidmar.
The Slav received an exhaustive test during the two Alekhine–Euwe World Championship matches in 1935 and 1937. Played by 11 of the first 13 world champions, this defense was particularly favored by Euwe, Botvinnik, and Smyslov. More recently the Slav has been adopted by Anand, Ivanchuk, Lautier, Short, and other top grandmasters, including use in six of the eight games that Vladimir Kramnik played as Black in the 2006 World Championship (in the other two, he played the related Semi-Slav Defense).
Today the theory of the Slav is very extensive and well-developed.
There are three main variations of the Slav:
Cheekbones and hormones
Your only self-defense
Lying through dinner
And your rock and roll teeth again
You've harbored a coward
Fed him full of broth
This nocturnal sadness
Leave you pale as this tablecloth
Careful don't you spill your dinner
That would be a good defense
Then you wouldn't have to sit here
On the fence
Cheekbones and hormones
He's the accidental man
Tell you in a stage whisper
About the boy who cried benefit
As the poet drags the darkness
Within him to the light
It's only in self-defense
That they drag you out into the night
Careful don't you spill your dinner
That would be your best defense
Careful what you wish for
An idiot and a genius
Standing up to dine
Breaking manmade laws
Cause I only follow those that are divine
And only when you're chased
Do you ever run fast
And it's wrong to commit a suicide