July 2009 (Contest V)
Lights Off, Quadratic Equations, The White Knight, Buggy algorithm, Johny the farmer, Lights Off, Revisited!, Sums in a cuboid
August 2009 (Contest VI)
Magic sequence, Bytelandian Robots, Curry Stained Napkin, Golf course, Crystals
October 2009 (Contest IX)
Forces in the crystal, Kayaks, Just a simple sum, A puzzle game, Congruent triangles, Paragraph Formatting
January 2010 (Contest XII)
Place the balloon, Circle of towers, Cell Phone Towers , Wildcard Matching, Lost Primes, Jawbreaker
January 2011 Challenge
Chess Pushing Game, Count Relations, Splitting Giant Subs, Flu Shot Lineup, Restaurant Expansion
February 2011 Contest
Bogosort, Glass Measurement, Rush Hour, Milestones, Counting Terms, Coloring Colorable Graphs
India