July 2009 (Contest V)
Quadratic Equations, Lights Off, Sums in a cuboid, Lights Off, Revisited!, Buggy algorithm, The White Knight, Johny the farmer
August 2009 (Contest VI)
Magic sequence, Bytelandian Robots, Curry Stained Napkin, Golf course, Crystals, Divide and conquer
September 2009 (Contest VIII)
A Coin Game, Mosaic, Chemical reactions, Alien language, Smart Frog, A Bowling Game, Se7en
October 2009 (Contest IX)
Congruent triangles, A puzzle game, Paragraph Formatting, Just a simple sum, Kayaks, Forces in the crystal
November 2009 (Contest X)
The Best Box, The LCS Problem Revisited, Help the judge, Help the DJ, SudokuX, Magic Strings
December 2009 (Contest XI)
Park tour, The N Queens Puzzle Revisited, Effective Sets, Palindromic Numbers, Maze of Digits, Plant Location
January 2010 (Contest XII)
Jawbreaker, Lost Primes, Wildcard Matching, Circle of towers, Place the balloon, Cell Phone Towers
February 2010 Contest
Overlapping discs, Sorting device, Soccer League, Motorbike Racing, The Mine Field, Toll Trolls
March 2010 Contest
Treasure Hunting, Heroes of Magical Might, K-important Strings, The Best Tower, Tri-Hexagonal Puzzle, Traffic jam
