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
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
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
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
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
Knight
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
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
Knight
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
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
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
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
Tic-tac-toe
edsrzf
🥉
101
8 hours ago
Proximity Grid
edsrzf
🥉
129
2 days ago
Roman to Arabic
CaedenHarper
116
3 days ago
Time Distance
CaedenHarper
🥉
396
3 days ago
Mandelbrot
CaedenHarper
3,370
4 days ago
Partition Numbers
CaedenHarper
655
4 days ago
Evil Numbers
GolfingSuccess
78
6 days ago
Fizz Buzz
albanian-laundromat
88
6 days ago
Odious Numbers
albanian-laundromat
49
7 days ago
Abundant Numbers (Long)
albanian-laundromat
67
7 days ago
Abundant Numbers
albanian-laundromat
67
7 days ago
Reverse Polish Notation
edsrzf
🥉
165
10 days ago
Game of Life
CaedenHarper
253
10 days ago
Number Spiral
CaedenHarper
164
10 days ago
Kaprekar Numbers
CaedenHarper
💎
109
11 days ago
ln 2
aksyristos
1,011
13 days ago
Topological Sort
Shanethegamer
🥈
152
13 days ago
Topological Sort
error256
🥉
189
13 days ago
Topological Sort
albanian-laundromat
💎
104
14 days ago
Fizz Buzz
InigoK
196
15 days ago
Vampire Numbers
Shanethegamer
1,079
17 days ago
Gijswijt’s Sequence
Shanethegamer
2,008
17 days ago
Ascending Primes
Shanethegamer
520
17 days ago
Pangram Grep
CaedenHarper
99
22 days ago
Arithmetic Numbers
rucin93
106
22 days ago
Sphenic Numbers
HumanoidCPU
8,868
23 days ago
π
Ralac07
1,011
24 days ago
Card Number Validation
edsrzf
🥉
108
26 days ago
Niven Numbers
edsrzf
🥇
49
26 days ago
λ
gigaprofisi
1,011
23 Jul 2025
Ten-pin Bowling
JayXon
💎
97
22 Jul 2025
Arabic to Roman
edsrzf
🥈
180
22 Jul 2025
Abundant Numbers (Long)
error256
70
19 Jul 2025
Happy Numbers (Long)
JayXon
🥈
74
19 Jul 2025
π
RaBa21
1,011
19 Jul 2025
τ
RaBa21
1,011
19 Jul 2025
Rock-paper-scissors-Spock-lizard
JayXon
💎
119
17 Jul 2025
Ten-pin Bowling
edsrzf
🥉
151
16 Jul 2025
Quine
dokutan
🥇
44
16 Jul 2025
Look and Say
CaedenHarper
160
16 Jul 2025
Mahjong
MeWhenI
🥈
543
15 Jul 2025
24 Game
rucin93
💎
175
15 Jul 2025
Vampire Numbers
CaedenHarper
💎
120
15 Jul 2025
Fizz Buzz
CaedenHarper
129
15 Jul 2025
24 Game
CaedenHarper
🥈
285
15 Jul 2025
Mandelbrot
error256
💎
110
13 Jul 2025
Polyominoes
CaedenHarper
💎
305
12 Jul 2025
Star Wars GPT
CaedenHarper
💎
144
12 Jul 2025
Divisors
CaedenHarper
70
12 Jul 2025
Arithmetic Numbers
CaedenHarper
💎
85
12 Jul 2025
Ascending Primes
CaedenHarper
💎
163
12 Jul 2025
Pangram Grep
error256
67
12 Jul 2025
Tutorial
Bpc-CPU
137
12 Jul 2025
Game of Life
RaBa21
607
11 Jul 2025
Reversi
edsrzf
💎
130
11 Jul 2025
Tutorial
FEZfan
69
7 Jul 2025
Pangram Grep
heanyang1
123
4 Jul 2025
Pangram Grep
gigaprofisi
107
4 Jul 2025
Game of Life
edsrzf
🥉
146
4 Jul 2025
ROT13
dokutan
817
3 Jul 2025
Forsyth–Edwards Notation
edsrzf
🥉
156
3 Jul 2025
Mandelbrot
edsrzf
🥈
188
3 Jul 2025
Flags
Shanethegamer
4,682
2 Jul 2025
CSS Colors (Inverse)
Shanethegamer
3,109
2 Jul 2025
Mandelbrot
dokutan
🥉
237
30 Jun 2025
Game of Life
dokutan
291
30 Jun 2025
Mandelbrot
HumanoidCPU
3,370
29 Jun 2025
Quine
gigaprofisi
56
28 Jun 2025
Recamán
dokutan
378
28 Jun 2025
Hexdump
edsrzf
🥈
208
28 Jun 2025
Pangram Grep
edsrzf
74
28 Jun 2025
United States
edsrzf
136
28 Jun 2025
ISBN
edsrzf
107
28 Jun 2025
DFA Simulator
edsrzf
💎
226
28 Jun 2025
Hexagonal Spiral
HumanoidCPU
1,343
27 Jun 2025