Recent Solutions
Golfers
Solutions
All Holes
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Morse Decoder
Morse Encoder
Musical Chords
N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
05AB1E
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
05AB1E
ALGOL 68
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Erlang
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Hole
All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Morse Decoder
Morse Encoder
Musical Chords
N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Quine
snoozingnewt
68
7 days ago
Fizz Buzz
snoozingnewt
369
8 days ago
Tutorial
retrohun
234
20 days ago
Tutorial
snoozingnewt
68
25 days ago
Tutorial
Vexxter9
234
21 Aug 2025
Highly Composite Numbers
HumanoidCPU
414
18 Aug 2025
Abundant Numbers (Long)
HumanoidCPU
986
18 Aug 2025
Polyominoes
HumanoidCPU
3,586
18 Aug 2025
Recamán
HumanoidCPU
919
18 Aug 2025
Pascal’s Triangle
HumanoidCPU
791
18 Aug 2025
Kaprekar Numbers
HumanoidCPU
462
18 Aug 2025
Happy Numbers
HumanoidCPU
129
18 Aug 2025
Happy Numbers (Long)
HumanoidCPU
574
18 Aug 2025
Emirp Numbers (Long)
HumanoidCPU
1,178
18 Aug 2025
Catalan Numbers
HumanoidCPU
2,894
18 Aug 2025
Tongue-twisters
HumanoidCPU
545
18 Aug 2025
Van Eck Sequence
HumanoidCPU
2,577
17 Aug 2025
Abundant Numbers
HumanoidCPU
185
16 Aug 2025
Look and Say
HumanoidCPU
1,301
15 Aug 2025
Farey Sequence
HumanoidCPU
4,376
15 Aug 2025
Diamonds
HumanoidCPU
1,125
15 Aug 2025
Niven Numbers
HumanoidCPU
113
14 Aug 2025
Lucky Numbers
HumanoidCPU
4,842
14 Aug 2025
Inventory Sequence
HumanoidCPU
2,645
14 Aug 2025
Gijswijt’s Sequence
HumanoidCPU
2,022
14 Aug 2025
Smith Numbers
HumanoidCPU
1,846
14 Aug 2025
Vampire Numbers
HumanoidCPU
1,093
14 Aug 2025
Arithmetic Numbers
HumanoidCPU
37,664
14 Aug 2025
Odious Numbers (Long)
HumanoidCPU
1,967
14 Aug 2025
Evil Numbers (Long)
HumanoidCPU
1,972
14 Aug 2025
N Queens
HumanoidCPU
1,268
14 Aug 2025
N Queens
emgordon154
189
14 Aug 2025
Pernicious Numbers (Long)
HumanoidCPU
20,684
14 Aug 2025
Divisors
HumanoidCPU
1,188
14 Aug 2025
Foo Fizz Buzz Bar
HumanoidCPU
5,741
14 Aug 2025
Prime Numbers (Long)
HumanoidCPU
5,970
14 Aug 2025
Niven Numbers (Long)
HumanoidCPU
7,460
14 Aug 2025
Vampire Numbers
emgordon154
176
13 Aug 2025
Odious Numbers
HumanoidCPU
95
11 Aug 2025
Evil Numbers
HumanoidCPU
92
10 Aug 2025
Trinomial Triangle
HumanoidCPU
2,089
6 Aug 2025
Rijndael S-box
HumanoidCPU
790
4 Aug 2025
Prime Numbers
HumanoidCPU
93
2 Aug 2025
Sphenic Numbers
HumanoidCPU
8,882
29 Jul 2025
π
Ralac07
1,028
28 Jul 2025
Semiprime Numbers
HumanoidCPU
12,811
28 Jul 2025
Tutorial
Bpc-CPU
234
12 Jul 2025
Hilbert Curve
Shanethegamer
5,156
2 Jul 2025
Sierpiński Triangle
Shanethegamer
592
2 Jul 2025
Rule 110
Shanethegamer
15,890
2 Jul 2025
Mandelbrot
Shanethegamer
10,042
2 Jul 2025
Cubes
Shanethegamer
4,139
2 Jul 2025
Fibonacci
HumanoidCPU
156
1 Jul 2025
Number Spiral
HumanoidCPU
322
27 Jun 2025
𝑒
gigaprofisi
1,025
20 Jun 2025
Collatz
HumanoidCPU
3,248
20 Jun 2025
Ascending Primes
HumanoidCPU
534
13 Jun 2025
Christmas Trees
HumanoidCPU
567
5 Jun 2025
Pernicious Numbers
HumanoidCPU
122
5 Jun 2025
Leap Years
HumanoidCPU
752
5 Jun 2025
Catalan’s Constant
HumanoidCPU
1,025
5 Jun 2025
Kolakoski Constant
HumanoidCPU
1,025
5 Jun 2025
λ
HumanoidCPU
1,025
5 Jun 2025
τ
HumanoidCPU
1,025
5 Jun 2025
π
HumanoidCPU
1,025
5 Jun 2025
φ
HumanoidCPU
1,025
5 Jun 2025
γ
HumanoidCPU
1,025
5 Jun 2025
ln 2
HumanoidCPU
1,025
5 Jun 2025
𝑒
HumanoidCPU
1,025
5 Jun 2025
√2
HumanoidCPU
1,025
5 Jun 2025
Polygon Triangulations
Shanethegamer
4,334
3 Jun 2025
99 Bottles of Beer
HumanoidCPU
11,907
3 Jun 2025
24 Game
HumanoidCPU
12,454
3 Jun 2025
Repeating Decimals
emgordon154
366
30 May 2025
CSS Colors
emgordon154
838
30 May 2025