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
Multitap Input
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
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
Multitap Input
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
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
Chars
Time
Submitted
Niven Numbers (Long)
edsrzf
104
30ms
41 mins ago
Niven Numbers (Long)
edsrzf
80
364ms
47 mins ago
Tutorial
FoxInTheClouds
61
12ms
49 mins ago
Prime Numbers (Long)
JRaspass
5,949
5ms
59 mins ago
Pascal’s Triangle
denkyuu1
62
35ms
60 mins ago
Fibonacci
nyoshe
72
122ms
99 mins ago
Arrows
denkyuu1
90
36ms
108 mins ago
Abundant Numbers
sean-niemann
66
1,147ms
2 hours ago
Leap Years
frankgraziano
62
8ms
3 hours ago
Transpose Sentence
emgordon154
🥈
103
100ms
3 hours ago
Fibonacci
frankgraziano
53
7ms
3 hours ago
Arrows
Vianpyro
304
154ms
3 hours ago
99 Bottles of Beer
Vianpyro
493
125ms
3 hours ago
Fizz Buzz
frankgraziano
89
7ms
3 hours ago
Multitap Input
plcc0
25
96ms
4 hours ago
Niven Numbers
TheSecondComing123
46
10ms
4 hours ago
Divisors
Nwo5-trg
101
69ms
4 hours ago
Lucky Tickets
plcc0
107
34ms
4 hours ago
Emirp Numbers
TheSecondComing123
80
11ms
4 hours ago
Ten-pin Bowling
edsrzf
💎
179
3ms
4 hours ago
Emojify
Nwo5-trg
230
59ms
4 hours ago
Levenshtein Distance
frankgraziano
308
10ms
4 hours ago
Ascending Primes
TheSecondComing123
120
15ms
5 hours ago
Leap Years
edsrzf
70
26ms
5 hours ago
Maze
FoxInTheClouds
187
450ms
5 hours ago
Intersection
emplv
199
281ms
5 hours ago
Evil Numbers
edsrzf
64
124ms
5 hours ago
Divisors
Ronterox
47
36ms
5 hours ago
Leap Years
sean-niemann
56
395ms
5 hours ago
Arithmetic Numbers
Nwo5-trg
113
128ms
5 hours ago
Evil Numbers
edsrzf
74
28ms
5 hours ago
brainfuck
rustykitty
356
2ms
5 hours ago
Fibonacci
Ronterox
46
35ms
5 hours ago
Fractions
rustykitty
96
18ms
5 hours ago
Day of Week
frankgraziano
293
10ms
6 hours ago
Foo Fizz Buzz Bar
Ronterox
95
39ms
6 hours ago
Continued Fractions
anter69
99
1,333ms
6 hours ago
Quine
DialFrost
45
2ms
6 hours ago
Arabic to Roman
frankgraziano
260
27ms
6 hours ago
Multitap Input
frankgraziano
236
9ms
6 hours ago
Gray Code Decoder
anter69
47
1,308ms
6 hours ago
Prime Numbers
pardouin
68
94ms
6 hours ago
Morse Encoder
edsrzf
💎
209
27ms
6 hours ago
Gray Code Decoder
anter69
42
178ms
6 hours ago
Gray Code Decoder
anter69
64
19ms
6 hours ago
Intersection
JayXon
💎
91
10ms
6 hours ago
Tutorial
pardouin
64
122ms
6 hours ago
12 Days of Christmas
plcc0
188
65ms
7 hours ago
Tutorial
frankgraziano
75
12ms
7 hours ago
Lucky Tickets
edsrzf
💎
194
31ms
7 hours ago
Intersection
emplv
🥈
92
11ms
7 hours ago
Collatz
Nwo5-trg
105
62ms
7 hours ago
Time Distance
anter69
219
1,182ms
7 hours ago
Time Distance
anter69
122
34ms
7 hours ago
Prime Numbers (Long)
jkelly467
90
514ms
7 hours ago
Medal Tally
JOrE20
140
10ms
7 hours ago
Leyland Numbers
edsrzf
🥉
148
30ms
7 hours ago
Game of Life
Andrey2001
352
19ms
7 hours ago
Scrambled Sort
AstroOrbis
105
11ms
7 hours ago
Morse Decoder
edsrzf
🥈
208
305ms
7 hours ago
Divisors
edsrzf
85
26ms
8 hours ago
Hexdump
JOrE20
160
12ms
8 hours ago
Multitap Input
kasarino
452
3ms
8 hours ago
Niven Numbers
AstroOrbis
58
16ms
8 hours ago
Smith Numbers
JOrE20
133
57ms
8 hours ago
Morse Encoder
JOrE20
210
10ms
8 hours ago
Morse Decoder
JOrE20
207
10ms
8 hours ago
Collatz
Kinkade76
83
26ms
8 hours ago
Time Distance
anter69
131
18ms
8 hours ago
Multitap Input
CaedenHarper
🥉
143
861ms
8 hours ago
Hexagonal Spiral
ryyyn
1,135
17ms
8 hours ago
Multitap Input
CaedenHarper
135
11ms
8 hours ago
Leyland Numbers
error256
🥈
68
68ms
8 hours ago
Multitap Input
kasarino
🥉
522
44ms
8 hours ago
United States
AstroOrbis
919
11ms
8 hours ago
Fibonacci
plcc0
39
3ms
8 hours ago
Niven Numbers (Long)
edsrzf
92
100ms
8 hours ago
Binary Lambda Calculus
AstroOrbis
805
24ms
8 hours ago
Niven Numbers (Long)
JOrE20
47
287ms
9 hours ago
Niven Numbers
JOrE20
45
284ms
9 hours ago