Mental Calculation Challenge

1. Baseball Challenge2005-10-29 2. Horse Racing2005-11-05 3. Firefighting Challenge: Part 12005-11-12 4. Firefighting Challenge: Part 22005-11-19 5. Sweeper Challenge2005-11-26 6. Mental Calculation Challenge2005-12-10 7. Infinite Challenge - Master of Quiz Airs2005-12-17 8. Christmas Special2005-12-24 9. A Year-End Special2005-12-31 10. New Year's Day Special2006-01-07 11. Master of Quiz2006-01-14 12. Grandmother's House Special2006-01-21 13. Lunar New Year Special - Who Do You Want to Keep as a Pet?2006-01-28 14. Spring Special2006-02-04 15. St. Valentine's Day Special2006-02-11 16. School Graduation Special2006-02-18 17. Lee Hyori Special: Part 12006-02-25 18. Lee Hyori Special: Part 22006-03-04 19. Beginning School Special2006-03-11 20. 20th Episode Special2006-03-18 21. Camping Special2006-03-25 22. April Fools' Day Special2006-04-01 23. Black Day Special2006-04-08 24. New York Special2006-04-15 25. China Special2006-04-22 26. Yi Sun-sin Birthday Special / Lee Young-ae Special Event2006-04-29