The year 2012 was the ninth year in the history of the Konfrontacja Sztuk Walki, a mixed martial arts promotion based in Poland. In 2012 Konfrontacja Sztuk Walki held 4 events beginning with, KSW 18: Unfinished Sympathy.
KSW 18: Unfinished Sympathy was a mixed martial arts event held on February 25, 2012 at the Orlen Arena in PÃ Âock, Poland.
The original main event of Jan BÃ Âachowicz fighting Dave Branch was changed when Branch had passport issues in the days leading up to the event. He was replaced by Mario Miranda.
Marcin RÃ³à ¼alski was initially scheduled to face Jerome Le Banner in a non-main event fight. However, a knee injury forced Le Banner off the card and with only two days notice Valentijn Overeem stepped in as a replacement.
KSW 19: Pudzianowski vs. Sapp was a mixed martial arts event held on May 12, 2012 at the Atlas Arena in à Âódà º, Poland.
The main event featured former World's Strongest Man Mariusz Pudzianowski facing Bob Sapp.
Also on the card was the first ever women's bout in KSW history when Marta Chojnoska fought Paulina Suska in a catchweight bout.
The vacant KSW Middleweight Championship was given to the winner of Michaà  Materla and Jay Silva.
KSW 20: Fighting Symphonies was a mixed martial arts event held on September 15, 2012 at the Ergo Arena in Gdaà Âsk, Poland.
The event featured Jan BÃ Âachowicz defending the Light Heavyweight Championship against Houston Alexander.
The RÃ³à ¼alski-Le Banner bout was originally scheduled for , however Le Banner was forced to withdraw due to an injured knee. Le Banner was again forced out of this bout due to injury and was replaced by Rodney Glunder.
KSW 21: Ultimate Explanation was a mixed martial arts event held on December 1, 2012 at the Hala Torwar in Warsaw, Poland.
It was KSW comeback to Warsaw after two years with no events in capital city of Poland.
Mamed Khalidov was expected to fight Melvin Manhoef in the main event. However, Manhoef suffered an injury to his left leg and pulled out of the bout. Kendall Grove stepped in to fight Khalidov.