2005 Problem 1: Cycles of a Permutation
2005 Problem 2: Company Control
2005 Problem 3: Repeating Decimals
2004 Problem 1: LED Clocks
2004 Problem 2: Right Down There
2004 Problem 3: Postfix Productions
2003 Problem 1: Decommenter
2003 Problem 2: Columnizer
2003 Problem 3: Typesetting Travels
2002 Problem 1: Grocery Bill
2002 Problem 2: ASCII Braille
2002 Problem 3: Zip Code Lottery
2001 Problem 1: Roman Numerals
2001 Problem 2: Bead Counting
2001 Problem 3: Overlapping Windows
2000 Problem 1: Alphabet Pyramid
2000 Problem 2: Guard Those Bits!
2000 Problem 3: Martian Coin Changing
1999 Problem 1: Diamonds
1999 Problem 2: Ballplayer's Bonus
1999 Problem 3: Checkerboard Holes
1998 Problem 1: Squares
1998 Problem 2: The Roofs of Madison County
1998 Problem 3: The Absent-Minded Mathematician
1997 Problem 1: Well-Ordered Numbers
1997 Problem 2: The Three M's
1997 Problem 3: The Happy Wanderer
1996 Problem 1: Stepping Stones
1996 Problem 2: Digital Product Root
1996 Problem 3: Sales Commissions