Findings:

• RSA Secret Key Challenge
• challenge
• Pepsi Challenge
• Challenge of the Future
• Real World Road Rules Challenge
• Challenge a stupid patent
• The Saltine Challenge
• 13 challenges for the 13th generation
• Nodeshell Challenge
• University Challenge
• Agnosticism is the greatest intellectual challenge
• Christian challenge
• The Cheap Beer Challenge
• Scrapheap Challenge
• Minerva challenges Arachne
• BT Global Challenge
• Front Page Challenge
• Simon Singh's Code Book Cipher Challenge Cracked
• The challenge we face
• Reading Between the Lines: Lessons from the SDMI Challenge
• 24 challenge
• Daz Doorstep Challenge
• voluntary challenges in Nethack and Slash'Em
• The Great E2 Fin de Siecle Fiction Challenge
• European Soccer Challenge
• The 2-sentence Fin de Siecle Fiction Challenge Entry
• Learning Machine Challenge
• The 1-sentence Fin de Siecle Fiction Challenge Entry
• Fiction challenge results
• Challenge of Nexar
• Triangle Challenge
• Triangle Challenge Solution
• The Long Island Challenge
• Fed Challenge
• ECCp-109 Challenge
• Challenge Coin
• Chip's Challenge
• Ferrari F355 Challenge
• American Solar Challenge
• Freedom's Challenge
• James Randi Paranormal Challenge
• Three Peaks Challenge
• BOC challenge
• Challenge for Change
• Full Metal Challenge
• Cheesily Cheerful Chart Challenge
• The Lyme Park Downhill Challenge
• Most Extreme Elimination Challenge
• E2verse Valentines Challenge (collaboration)
• challenge response
• F1 Career Challenge
• Secret Me-Meta-Node Challenge
• The 99p Challenge
• DARPA grand challenge
• Challenge everything
• E2verse previous challenge (collaboration)
• Ivan's challenge
• Three Pint Challenge
• The Mentos Challenge
• wertperch's nodeshell challenge (document)
• Puzzle Quest: Challenge of the Warlords
• The Stephen King Challenge
• Harry Potter Interactive DVD Game: Hogwarts Challenge
• Millennium Challenge 2002
• THE IRON NODER CHALLENGE
• The Notebook Challenge
• Clomid challenge
• THE IRON NODER CHALLENGE 2: ELECTRIC BOOGALOO
• The Nuzlocke challenge
• THE IRON NODER CHALLENGE 3: THIS TIME IT'S MARTENSITIC
• Secret Santa Summer Nodeshell Challenge 2011
• "So?" is a challenge
• THE IRON NODER CHALLENGE 4: FERRASSIC PARK
• The challenge of writing a meaningful free-form poem using only two letter words
• THE IRON NODER CHALLENGE 5: THE FERROUS FRONTIER
• Sahara's Math Challenge # 1
• Noah's Ark challenge
• a partner who challenges you
• THE IRON NODER CHALLENGE 6: RUST NEVER SLEEPS
• The 2013 IRON NODER CHALLENGE (document)
• THE IRON NODER CHALLENGE 7: NODE HARDER WITH A VENGEANCE
• Up for a challenge?
• THE IRON NODER CHALLENGE 8: RUST IS FOR THE WEAK
• THE IRON NODER CHALLENGE: 9 FAST 9 FERROUS
• October Skeleton Challenge
• Ice bucket challenge
• THE IRON NODER CHALLENGE XII: WE'LL RUST WHEN WE'RE DEAD
• even if you fall from an impossible challenge,
• where you see mysteries, i see challenges
• "Age by age" reading challenge
• A Challenge is Issued
• Congratulations, you are about to experience a profound challenge
• A coder stumbles upon a dormant online game where real-world prizes are won; as they play, the challenges escalate to dangerous real-life tasks
• Kill Yourself
• yourself
• Decide to clean yourself up
• Be yourself
• Doing illogical things to feel better about yourself
• You are taking yourself too seriously
• Withdraw yourself from the situation
• Enjoy yourself. This is utmost in importance.
• Capitalism urges you to define yourself through your purchases
• Reflections of yourself
• Who needs another person when you have yourself?
• Enough rope to shoot yourself in the foot
• Formula for proclaiming yourself Pope
• Laugh at yourself before others do
• check yourself
• Teach Yourself Scheme
• Teach Yourself Scheme: 2.1 Simple Data Types
• Teach Yourself Scheme: 2.2 Compound Data Types
• Teach Yourself Scheme: 2.3 Other Data Types
• Teach Yourself Scheme: 2.4 S-Expressions
• Teach Yourself Scheme: 1 Enter Scheme
• Teach Yourself Scheme: 2 Data Types
• Teach Yourself Scheme: 3 Forms
• Teach Yourself Scheme: 3.1 Procedures
• Teach Yourself Scheme: 3.2 apply
• Teach Yourself Scheme: 3.3 Sequencing
• Teach Yourself Scheme: 4 Conditionals
• Teach Yourself Scheme: 4.1 'when' and 'unless'
• Teach Yourself Scheme: 4.2 cond
• Teach Yourself Scheme: 4.3 case
• Teach Yourself Scheme: 4.4 'and' and 'or'
• Teach Yourself Scheme: 5 Lexical Variables
• Teach Yourself Scheme: 5.1 'let' and 'let*'
• Teach Yourself Scheme: 5.2 fluid-let
• Teach Yourself Scheme: 6 Recursion
• Teach Yourself Scheme: 6.1 letrec
• Teach Yourself Scheme: 6.2 Named 'let'
• Teach Yourself Scheme: 6.3 Iteration
• Teach Yourself Scheme: 6.4 Mapping a procedure across a list
• Teach Yourself Scheme: 7 I/O
• Teach Yourself Scheme: 7.1 Reading
• Teach Yourself Scheme: 7.2 Writing
• Teach Yourself Scheme: 7.3 File ports
• Teach Yourself Scheme: 7.4 String ports
• Teach Yourself Scheme: 7.5 Loading files
• Teach Yourself Scheme: 8 Macros
• Teach Yourself Scheme: 8.1 Specifying the expansion as a template
• Teach Yourself Scheme: 8.3 fluid-let
• Teach Yourself Scheme: 9 Structures
• Teach Yourself Scheme: 9.1 Default initializations
• Teach Yourself Scheme: 9.2 'defstruct' definition
• Teach Yourself Scheme: 10 Alists and tables
• Teach Yourself Scheme: 11.1 Checking for and deleting files
• Teach Yourself Scheme: 11.2 Calling operating-system commands
• Teach Yourself Scheme: 11.3 Environment variables
• Teach Yourself Scheme: 12 Objects and classes
• Teach Yourself Scheme: 12.1 A simple object system
• Teach Yourself Scheme: 12.2 Classes are instances too
• Teach Yourself Scheme: 12.3 Multiple inheritance
• Teach Yourself Scheme: 13 Jumps
• Teach Yourself Scheme: 13.1 call-with-current-continuation
• Teach Yourself Scheme: 13.2 Escaping continuations
• Teach Yourself Scheme: 13.3 Tree matching
• Teach Yourself Scheme: 13.4 Coroutines
• Teach Yourself Scheme: 14 Nondeterminism
• Teach Yourself Scheme: 14.1 Description of 'amb'
• Teach Yourself Scheme: 14.2 Implementing 'amb' in Scheme
• Teach Yourself Scheme: 14.3 Using 'amb' in Scheme
• Teach Yourself Scheme: 14.4 Logic puzzles
• Teach Yourself Scheme: 15 Engines
• Teach Yourself Scheme: 15.1 The clock
• Teach Yourself Scheme: 15.2 Flat engines
• Teach Yourself Scheme: 15.3 Nestable engines
• Teach Yourself Scheme: 16 Shell scripts
• Teach Yourself Scheme: 16.1 Hello, World!, again
• Teach Yourself Scheme: 16.2 Scripts with arguments
• Teach Yourself Scheme: 16.3 Example
• Teach Yourself Scheme: 17 CGI scripts
• Teach Yourself Scheme: 17.1 Example: Displaying environment variables
• Teach Yourself Scheme: 17.2 Example: Displaying selected environment variable
• Teach Yourself Scheme: 17.3 CGI script utilities
• Teach Yourself Scheme: 17.4 A calculator via CGI
• Teach Yourself Scheme: R Scheme dialects

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