Infinite Challenge: 2x20
20th Episode Special
2 - 1Baseball Challenge Oct. 29, 2005
2 - 2Horse Racing Nov. 05, 2005
2 - 3Firefighting Challenge: Part 1 Nov. 12, 2005
2 - 4Firefighting Challenge: Part 2 Nov. 19, 2005
2 - 5Sweeper Challenge Nov. 26, 2005
2 - 6Mental Calculation Challenge Dec. 10, 2005
2 - 7Infinite Challenge - Master of Quiz Airs Dec. 17, 2005
2 - 8Christmas Special Dec. 24, 2005
2 - 9A Year-End Special Dec. 31, 2005
2 - 10New Year's Day Special Jan. 07, 2006
2 - 11Master of Quiz Jan. 14, 2006
2 - 12Grandmother's House Special Jan. 21, 2006
2 - 13
2 - 14Spring Special Feb. 04, 2006
2 - 15St. Valentine's Day Special Feb. 11, 2006
2 - 16School Graduation Special Feb. 18, 2006
2 - 17Lee Hyori Special: Part 1 Feb. 25, 2006
2 - 18Lee Hyori Special: Part 2 Mar. 04, 2006
2 - 19Beginning School Special Mar. 11, 2006
2 - 2020th Episode Special Mar. 18, 2006
2 - 21Camping Special Mar. 25, 2006
2 - 22April Fools' Day Special Apr. 01, 2006
2 - 23Black Day Special Apr. 08, 2006
2 - 24New York Special Apr. 15, 2006
2 - 25China Special Apr. 22, 2006
2 - 26Yi Sun-sin Birthday Special / Lee Young-ae Special Event Apr. 29, 2006