IOCCC 2005 winning categories are

• Most ingenious puzzle solution
• Best 3D puzzle
• Most discourteous interpreter
• Most superfluous output
• Most ambiguous language
• Best 2D puzzle
• Most sonorous output
• Abuse of the rules
• Best use of parenthesis
• Best use of the www
• Best of show
• Best emulator
• Best game
• Most circuitous walk
• Most beauteous visuals

The tar file.