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
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
Set
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
Rockstar 2
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
Rockstar 2
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
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
Set
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Collatz
JayXon
🥇
68
101 mins ago
Recamán
MeWhenI
🥇
73
3 hours ago
π
MeWhenI
🥉
171
3 hours ago
φ
MeWhenI
188
3 hours ago
Van Eck Sequence
MeWhenI
🥇
69
4 hours ago
Seven Segment
The-Wolfson
468
4 hours ago
Partition Numbers
MeWhenI
🥉
96
4 hours ago
Partition Numbers
stefangimmillaro
💎
76
6 hours ago
Semiprime Numbers
HumanoidCPU
12,803
6 hours ago
Partition Numbers
dokutan
661
12 hours ago
Tutorial
gigaprofisi
160
28 hours ago
ISBN
HumanoidCPU
120
29 hours ago
Repeating Decimals
The-Wolfson
💎
248
45 hours ago
Trinomial Triangle
The-Wolfson
2,081
45 hours ago
Tutorial
The-Wolfson
88
45 hours ago
Quine
JunkIce
63
4 days ago
Odd Polyomino Tiling
HumanoidCPU
21,445
6 days ago
Christmas Trees
MeWhenI
95
7 days ago
Happy Numbers
The-Wolfson
192
8 days ago
Day of Week
The-Wolfson
188
8 days ago
Happy Numbers
JunkIce
106
9 days ago
Emirp Numbers
yhm138
979
15 days ago
Tutorial
targrik
94
17 days ago
Tic-tac-toe
stefangimmillaro
🥈
115
19 days ago
Levenshtein Distance
kevinnaviapaiva
761
20 days ago
Tic-tac-toe
JayXon
💎
106
21 days ago
Inventory Sequence
dokutan
2,059
21 days ago
Number Spiral
dokutan
314
21 days ago
Gijswijt’s Sequence
dokutan
315
21 days ago
Pascal’s Triangle
dokutan
767
21 days ago
N Queens
dokutan
1,260
21 days ago
Kaprekar Numbers
MeWhenI
145
22 days ago
Forsyth–Edwards Notation
The-Wolfson
312
22 days ago
Rock-paper-scissors-Spock-lizard
The-Wolfson
436
22 days ago
Sudoku
The-Wolfson
🥉
866
22 days ago
Fizz Buzz
The-Wolfson
78
23 days ago
Billiards
The-Wolfson
564
23 days ago
Pernicious Numbers
The-Wolfson
87
24 days ago
Collatz
The-Wolfson
94
24 days ago
Arrows
The-Wolfson
313
26 days ago
Tic-tac-toe
Shanethegamer
150
26 days ago
Tic-tac-toe
The-Wolfson
302
26 days ago
Factorial Factorisation
dokutan
870
3 Feb 2025
Tutorial
CaedenHarper
88
3 Feb 2025
Pangram Grep
voytxt
120
2 Feb 2025
ROT13
HumanoidCPU
274
1 Feb 2025
DFA Simulator
stefangimmillaro
💎
206
31 Jan 2025
Tic-tac-toe
MeWhenI
🥉
147
31 Jan 2025
Hilbert Curve
HumanoidCPU
5,132
30 Jan 2025
Trinomial Triangle
HumanoidCPU
2,081
28 Jan 2025
Catalan Numbers
CaedenHarper
2,886
24 Jan 2025
λ
JunkIce
1,011
23 Jan 2025
Inventory Sequence
JayXon
💎
74
22 Jan 2025
Divisors
The-Wolfson
72
22 Jan 2025
ROT13
The-Wolfson
242
22 Jan 2025
Rijndael S-box
CaedenHarper
782
22 Jan 2025
𝑒
CaedenHarper
1,011
22 Jan 2025
√2
CaedenHarper
1,011
22 Jan 2025
φ
CaedenHarper
1,011
22 Jan 2025
τ
CaedenHarper
1,011
22 Jan 2025
π
CaedenHarper
1,011
22 Jan 2025
λ
CaedenHarper
1,011
22 Jan 2025
γ
CaedenHarper
🥉
1,011
22 Jan 2025
ln 2
CaedenHarper
1,011
22 Jan 2025
Kolakoski Constant
CaedenHarper
1,011
22 Jan 2025
Factorial Factorisation
CaedenHarper
870
22 Jan 2025
Catalan’s Constant
CaedenHarper
1,011
22 Jan 2025
Partition Numbers
sean-niemann
🥈
94
20 Jan 2025
Prime Numbers
sean-niemann
52
20 Jan 2025
𝑒
madeforlosers
1,011
14 Jan 2025
Hexagonal Spiral
Shanethegamer
1,349
14 Jan 2025
Fibonacci
Natanaelel
51
13 Jan 2025
π
sean-niemann
🥈
151
11 Jan 2025
τ
sean-niemann
🥈
151
11 Jan 2025
Highly Composite Numbers
HumanoidCPU
406
11 Jan 2025