Programming Puzzles & Code Golf

programming puzzle enthusiasts and code golfers
Solved Questions
Unsolved Questions
  1. Code Golf: Duck, duck, goose!
  2. Third time the charm

  3. Showcase of Languages
  4. Count up folks!
  5. Program Sequence Generator

  6. Text to Brain-Flak
  7. "Hello, World!"

  8. An Ant on a Cube

  9. What's the file extension?
  10. Print numbers from 1 to 10
  11. Calculate the Hafnian as quickly as possible

  12. Triangle a number!

  13. 𝘜𝘯𝘪𝘤𝘰𝘥𝘦 𝗠𝗮𝗿𝗸𝗱𝗼𝘄𝗻 F̲o̲r̲m̲a̲t̲t̲e̲r̲ (*Unicode* **Markdown** __Formatter__)

  14. Some Lonely Primes
  15. There, I fixed it (with rope)
  16. Tips for golfing in PARI/GP

  17. 8 8's make 1000
  18. I double the source, you double the output!

  19. This challenge is about recursion (Cops' thread)

  20. JAxH obfuscated method, not text
  21. Golf the Chinese 9*9 multiple table

  22. This challenge is about recursion (Robbers' thread)

  23. Collapse the antistring

  24. Create a binary wall
  25. Add a language to a polyglot

  26. Schläfli Convex Regular Polytope Interpreter
  27. EASY to memorize numbers
  28. Create an "H" from smaller "H"s

  29. Help John watch movies!

  30. Sierpinski Carpets

  31. There, I fixed it (with tape)
  32. Decompose Polynomials
  33. Sing Happy Birthday to your favourite programming language
  34. Generate a heap of boxes

  35. Golf a Custom Fibonacci Sequence
  36. Carve a square from a string
  37. Left Hand vs. Right Hand — Typists Challenge

  38. Calculate the n-th iterate of a polynomial for a specific value; fⁿ(x)
  39. There can be only 1!

  40. Compute the Binary Sierpinski Triangle Sequence

  41. Woody words, tinny words
  42. Rotate the Roots

  43. Find the binarray!

  44. Create a Magic 8 Ball
  45. Locally invert a Polynomial
  46. Irreducible polynomials over GF(5)

  47. Formic Functions - Ant Queen of the Hill Contest

  48. Find The Local Maxima And Minima
  49. Implement Takewhile
  50. Make a hammer animation
  51. The Programming Language Quiz, Mark II - Cops

  52. Hello, World! (Every other character)
  53. Optimal path through a matrix
  54. Un-average temperatures!

  55. Simplify and Take Partial Derivative to a Polynomial String
  56. Shortest code to throw SIGILL

  57. Am I an engineer?
  58. Produce the number 2014 without any numbers in your source code

  59. Find the longest word in an array
  60. Flatten the CUBE
  61. Oops, I blew it up (with numbers)

  62. Output all the white or black squares of a chessboard

  63. Abstract Rewriting Challenge (Robbers)
  64. Print a layered cake

  65. Xorting an array
  66. The Snail in the Well

  67. Calculate the sum of ILD
  68. Rotational symmetry of string

  69. One OEIS after another

  70. Morse code translator
  71. Find relevant digit groupings

  72. MS Paint is underrated

  73. Are circular tapes exciting?

  74. Extreme Fibonacci

  75. Interquine - Two programs that output each other in a loop
  76. Golf you a quine for great good!

  77. Split string on first occurrence of each character
  78. Generate TeX to typeset Sierpinski Triangle Fractal

  79. Formerly Composite Numbers
  80. Sum of squares on GPU

  81. Make a Triangularity program valid
  82. Noah's (upgraded) ark

  83. Fryer simulator

  84. Stitch Together a Palindrome from Palindromic Substrings
  85. How to print the below format in the fewest bytes?

  86. Diagonal Alphabet
  87. Let's draw Mona Lisa

  88. Display Scrolling Waves

  89. Print "Hey Jude" from The Beatles

  90. There, I broke it (with scissors)
  91. Cutpoints in a maze
  92. It's [current year] already, folks, go home

  93. Is this word Lexically Ordered?

  94. Draw HyperNeutrino's benzene hegaxon icon in ASCII

  95. Full Width Text
  96. Interpret /// (pronounced 'slashes')

  97. Extract filename from path
  98. Abstract Rewriting Challenge (Cops)

  99. 1, 2, Fizz, 4, Buzz

  100. Finding Factorials with Gamma