Recent Solutions
Achievements
Cheevos
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
Calendar
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
Minesweeper
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
Tower of Hanoi
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
Binary Lambda Calculus
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
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
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
Erlang
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
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
Calendar
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
Minesweeper
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
Tower of Hanoi
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
Binary Lambda Calculus
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
τ
JOrE20
1,021
27ms
20 hours ago
√2
JOrE20
1,021
27ms
20 hours ago
φ
JOrE20
1,021
25ms
20 hours ago
99 Bottles of Beer
JOrE20
436
28ms
24 hours ago
Calendar
edsrzf
💎
291
65ms
38 hours ago
Day of Week
edsrzf
🥇
103
57ms
2 days ago
Christmas Trees
JOrE20
713
26ms
2 days ago
Catalan Numbers
JOrE20
3,187
27ms
2 days ago
12 Days of Christmas
JOrE20
647
27ms
2 days ago
Ascending Primes
JOrE20
827
29ms
2 days ago
24 Game
JOrE20
16,533
24ms
2 days ago
Jacobi Symbol
JOrE20
416
26ms
2 days ago
Niven Numbers
JOrE20
82
26ms
2 days ago
Repeating Decimals
JOrE20
🥉
422
27ms
2 days ago
Game of Life
m-tkach
🥈
160
28ms
3 days ago
Game of Life
edsrzf
💎
154
29ms
4 days ago
Pernicious Numbers (Long)
snoozingnewt
175
30ms
4 days ago
Pascal’s Triangle
JOrE20
157
26ms
4 days ago
Game of Life
blaztoma
192
24ms
5 days ago
Trinomial Triangle
edsrzf
💎
137
28ms
5 days ago
Pascal’s Triangle
edsrzf
115
26ms
5 days ago
Factorial Factorisation
albanian-laundromat
💎
209
28ms
6 days ago
Divisors
albanian-laundromat
99
26ms
8 days ago
Happy Numbers (Long)
albanian-laundromat
149
27ms
8 days ago
Collatz
albanian-laundromat
137
26ms
8 days ago
Number Spiral
blaztoma
266
26ms
8 days ago
Emojify
blaztoma
🥈
369
28ms
9 days ago
Arabic to Roman
JOrE20
350
28ms
9 days ago
PalindromemordnilaP
JOrE20
271
26ms
11 days ago
Hexagonal Spiral
bitsandbeyond
415
26ms
11 days ago
Calendar
JOrE20
🥈
1,000
60ms
11 days ago
𝑒
JOrE20
416
61ms
11 days ago
Factorial Factorisation
JOrE20
🥈
219
27ms
11 days ago
γ
albanian-laundromat
🥈
589
26ms
12 days ago
Musical Chords
blaztoma
🥉
371
27ms
14 days ago
Lucky Tickets
MeWhenI
1,992
81ms
14 days ago
Pernicious Numbers
JOrE20
76
26ms
14 days ago
Tongue-twisters
JOrE20
493
26ms
14 days ago
Abundant Numbers (Long)
JOrE20
119
29ms
14 days ago
Abundant Numbers
JOrE20
118
29ms
14 days ago
Fibonacci
DialFrost
🥇
66
28ms
17 days ago
Happy Numbers (Long)
HumanoidCPU
415
66ms
18 days ago
Tongue-twisters
prestosilver
579
27ms
19 days ago
Emirp Numbers
Mukundan314
116
26ms
19 days ago
Ten-pin Bowling
blaztoma
🥉
397
25ms
19 days ago
United States
Mukundan314
💎
150
96ms
21 days ago
Tutorial
Mukundan314
107
26ms
21 days ago
Odious Numbers
JOrE20
67
25ms
22 days ago
Evil Numbers
JOrE20
66
24ms
22 days ago
Sudoku (Fill-in)
blaztoma
🥈
454
26ms
22 days ago
ASCII Table
dpethes
🥉
190
55ms
23 days ago
Odious Numbers (Long)
dpethes
71
25ms
25 days ago
Odious Numbers
dpethes
69
25ms
25 days ago
Niven Numbers (Long)
snoozingnewt
135
25ms
25 days ago
Evil Numbers (Long)
dpethes
73
25ms
26 days ago
Evil Numbers
dpethes
71
25ms
26 days ago
Tongue-twisters
JayXon
🥈
336
25ms
26 days ago
Levenshtein Distance
primo-ppcg
🥈
266
64ms
27 days ago
Gray Code Decoder
albanian-laundromat
121
78ms
27 days ago
Quine
CornerMercury
🥇
92
24ms
8 Dec 2025
Billiards
albanian-laundromat
🥈
318
55ms
7 Dec 2025
Tic-tac-toe
albanian-laundromat
💎
181
28ms
6 Dec 2025
Fizz Buzz
sean-niemann
135
24ms
6 Dec 2025
Happy Numbers
snoozingnewt
105
24ms
6 Dec 2025
Sphenic Numbers
snoozingnewt
1,615
27ms
6 Dec 2025
Recamán
snoozingnewt
307
26ms
6 Dec 2025
Prime Numbers
snoozingnewt
122
24ms
6 Dec 2025
ln 2
snoozingnewt
🥉
356
31ms
6 Dec 2025
Emirp Numbers (Long)
snoozingnewt
351
26ms
6 Dec 2025
Emirp Numbers
snoozingnewt
350
25ms
6 Dec 2025
Collatz
snoozingnewt
145
26ms
6 Dec 2025
Fibonacci
snoozingnewt
69
24ms
6 Dec 2025
Pernicious Numbers
snoozingnewt
🥇
68
24ms
6 Dec 2025
ISBN
albanian-laundromat
192
24ms
6 Dec 2025
Niven Numbers
snoozingnewt
🥇
76
25ms
6 Dec 2025
Foo Fizz Buzz Bar
snoozingnewt
198
74ms
6 Dec 2025
Fizz Buzz
snoozingnewt
138
24ms
6 Dec 2025
Fizz Buzz
albanian-laundromat
141
74ms
6 Dec 2025
Fizz Buzz
JOrE20
151
25ms
6 Dec 2025
ROT13
JOrE20
234
26ms
4 Dec 2025