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
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
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
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Transpose Sentence
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 Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
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
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
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
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Transpose Sentence
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 Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
Happy Numbers
dokutan
115
42 hours ago
Collatz
dokutan
153
44 hours ago
Catalan Numbers
dokutan
91
44 hours ago
Repeating Decimals
Shanethegamer
🥈
241
2 days ago
QR Decoder
Shanethegamer
💎
254
2 days ago
DFA Simulator
Shanethegamer
🦄
249
2 days ago
Day of Week
dokutan
468
2 days ago
Arithmetic Numbers
dokutan
💎
89
2 days ago
Pernicious Numbers (Long)
dokutan
135
2 days ago
Niven Numbers
dokutan
73
2 days ago
Niven Numbers (Long)
dokutan
73
2 days ago
Abundant Numbers
dokutan
83
3 days ago
Abundant Numbers (Long)
dokutan
83
3 days ago
Tutorial
retrohun
137
3 days ago
Leap Years
jipsong
55
3 days ago
Prime Numbers (Long)
dokutan
80
3 days ago
Cubes
Shanethegamer
🥈
352
3 days ago
Fractions
Shanethegamer
🥉
112
4 days ago
Intersection
Shanethegamer
🥉
144
4 days ago
Ascending Primes
Shanethegamer
💎
141
4 days ago
Set
Shanethegamer
🥈
155
6 days ago
Polyominoes
dokutan
💎
546
6 days ago
Star Wars Opening Crawl
Shanethegamer
💎
498
6 days ago
Tongue-twisters
dokutan
218
7 days ago
Set
error256
💎
134
7 days ago
λ
ehulinsky
1,012
9 days ago
Cubes
dokutan
🥉
888
10 days ago
Pangram Grep
dokutan
87
13 days ago
Odious Numbers (Long)
dokutan
82
13 days ago
Evil Numbers (Long)
dokutan
88
13 days ago
Partition Numbers
JayXon
💎
68
17 days ago
π
Mabeloid
1,011
21 days ago
Star Wars GPT
Shanethegamer
154
25 days ago
Game of Life
edsrzf
🥉
152
27 days ago
Partition Numbers
Shanethegamer
137
7 Mar 2025
Game of Life
gigaprofisi
248
7 Mar 2025
Partition Numbers
pardouin
🥈
73
7 Mar 2025
Partition Numbers
KatieLG
655
6 Mar 2025
Partition Numbers
kg583
🥉
74
4 Mar 2025
Partition Numbers
edsrzf
118
4 Mar 2025
Semiprime Numbers
HumanoidCPU
6,414
4 Mar 2025
𝑒
gigaprofisi
1,011
3 Mar 2025
Tutorial
gigaprofisi
137
3 Mar 2025
Quine
edsrzf
46
2 Mar 2025
Partition Numbers
emgordon154
116
1 Mar 2025
Partition Numbers
HumanoidCPU
357
1 Mar 2025
Partition Numbers
MeWhenI
655
28 Feb 2025
Quine
JunkIce
48
27 Feb 2025
CSS Colors
dokutan
🥉
2,320
26 Feb 2025
Odd Polyomino Tiling
HumanoidCPU
21,439
26 Feb 2025
N Queens
edsrzf
💎
153
25 Feb 2025
Minesweeper
Shanethegamer
149
20 Feb 2025
Tutorial
DialFrost
69
20 Feb 2025
Prime Numbers
acotis
79
19 Feb 2025
Game of Life
yhm138
2,361
17 Feb 2025
99 Bottles of Beer
Shanethegamer
255
16 Feb 2025
Emirp Numbers
yhm138
1,127
16 Feb 2025
Fizz Buzz
Pyroan
110
16 Feb 2025
Diamonds
Shanethegamer
125
16 Feb 2025
Tic-tac-toe
Pyroan
160
15 Feb 2025
Christmas Trees
Shanethegamer
107
15 Feb 2025
Look and Say
edsrzf
98
15 Feb 2025
Tutorial
xyangst
81
14 Feb 2025
Tutorial
targrik
137
14 Feb 2025
Time Distance
Shanethegamer
🥈
254
14 Feb 2025
Tic-tac-toe
JayXon
💎
93
13 Feb 2025
Catalan Numbers
jipsong
49
12 Feb 2025
Quine
sciencejiho
46
10 Feb 2025
λ
sciencejiho
1,011
10 Feb 2025
γ
sciencejiho
1,011
10 Feb 2025
Number Spiral
error256
190
5 Feb 2025
Emojify
dokutan
353
4 Feb 2025
Morse Decoder
dokutan
521
4 Feb 2025
United States
dokutan
687
3 Feb 2025
Tutorial
CaedenHarper
75
3 Feb 2025