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
Lily
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
Lily
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
Scrambled Sort
JOrE20
🥉
618
60ms
a min ago
Intersection
Openstreetmapler
136
15ms
15 mins ago
Catalan Numbers
JOrE20
2,912
12ms
15 mins ago
Prime Numbers (Long)
DialFrost
🥇
59
160ms
17 mins ago
Prime Numbers (Long)
DialFrost
🥇
64
80ms
18 mins ago
Inventory Sequence
JOrE20
56
43ms
19 mins ago
Abundant Numbers
JOrE20
58
10ms
19 mins ago
Lucky Numbers
JOrE20
70
12ms
19 mins ago
Leap Years
denkyuu1
44
291ms
20 mins ago
Divisors
denkyuu1
52
248ms
32 mins ago
Smith Numbers
plcc0
41
847ms
33 mins ago
Smith Numbers
JOrE20
51
46ms
40 mins ago
Ascending Primes
JOrE20
457
57ms
51 mins ago
Prime Numbers
DialFrost
36
4ms
61 mins ago
Ascending Primes
JOrE20
122
10ms
63 mins ago
99 Bottles of Beer
denkyuu1
256
35ms
67 mins ago
Ascending Primes
JOrE20
611
2ms
73 mins ago
λ
KasperKivimaeki
2,519
2ms
73 mins ago
Ascending Primes
JOrE20
552
11ms
74 mins ago
Catalan’s Constant
KasperKivimaeki
2,536
2ms
75 mins ago
Number Spiral
JOrE20
🥈
342
11ms
77 mins ago
Foo Fizz Buzz Bar
Jonson26
169
2ms
79 mins ago
Divisors
rotemkm
87
10ms
80 mins ago
Fizz Buzz
Jonson26
110
2ms
83 mins ago
Number Spiral
JOrE20
363
1,726ms
84 mins ago
Divisors
Jonson26
111
386ms
87 mins ago
Multitap Input
bpharaldsson
169
11ms
88 mins ago
Roman to Arabic
tomh1012
391
150ms
88 mins ago
Odious Numbers (Long)
JOrE20
49
11ms
91 mins ago
Hexdump
JOrE20
🥉
345
68ms
95 mins ago
Divisors
Jonson26
80
10ms
96 mins ago
Tutorial
Ultra814
44
6ms
101 mins ago
Tutorial
Ultra814
31
6ms
102 mins ago
Roman to Arabic
tomh1012
350
148ms
103 mins ago
Binary Lambda Calculus
Ultra814
774
11ms
110 mins ago
γ
KasperKivimaeki
2,520
2ms
113 mins ago
Factorial Factorisation
lelbal
138
16ms
2 hours ago
DFA Simulator
JOrE20
119
11ms
2 hours ago
Roman to Arabic
tomh1012
366
4ms
2 hours ago
Intersection
JOrE20
132
12ms
2 hours ago
Intersection
bpharaldsson
176
12ms
2 hours ago
Look and Say
denkyuu1
56
35ms
2 hours ago
Intersection
bitsandbeyond
132
11ms
2 hours ago
Intersection
Andriamanitra
130
11ms
2 hours ago
Kolakoski Sequence
pardouin
🥇
64
2,267ms
3 hours ago
Minesweeper
tomh1012
366
47ms
3 hours ago
99 Bottles of Beer
adgh
235
83ms
3 hours ago
Ascending Primes
firegene
101
4,292ms
3 hours ago
Continued Fractions
pardouin
148
2,619ms
4 hours ago
Intersection
tomh1012
211
11ms
5 hours ago
Arrows
edsrzf
🥈
87
1,683ms
5 hours ago
Multitap Input
bzijlema
123
15ms
6 hours ago
Inventory Sequence
copy
22
3ms
6 hours ago
Intersection
Natanaelel
132
11ms
6 hours ago
Reverse Polish Notation
blaztoma
118
43ms
6 hours ago
Tic-tac-toe
kasarino
582
45ms
6 hours ago
Arrows
edsrzf
🥉
130
636ms
6 hours ago
Collatz
blaztoma
70
22ms
7 hours ago
N Queens
edsrzf
💎
123
110ms
7 hours ago
Recamán
denkyuu1
61
33ms
7 hours ago
Vampire Numbers
plcc0
38
2,009ms
7 hours ago
Set
051
126
35ms
7 hours ago
N Queens
edsrzf
🥇
88
1,163ms
7 hours ago
Leap Years
JayXon
🥈
47
5ms
7 hours ago
ASCII Table
051
283
10ms
7 hours ago
N Queens
edsrzf
💎
90
1,363ms
7 hours ago
Look and Say
solisolu
100
15ms
7 hours ago
Kaprekar Numbers
051
244
3,922ms
7 hours ago
Intersection
Matter1024
148
64ms
7 hours ago
Intersection
Matter1024
130
10ms
7 hours ago
Semiprime Numbers
plcc0
24
108ms
8 hours ago
Tutorial
Matter1024
45
2,063ms
8 hours ago
Continued Fractions
pardouin
61
61ms
8 hours ago
Catalan Numbers
denkyuu1
60
11ms
8 hours ago
Odious Numbers
denkyuu1
34
34ms
8 hours ago
Transpose Sentence
denkyuu1
74
41ms
9 hours ago
Vampire Numbers
albanian-laundromat
🥉
246
114ms
9 hours ago
Levenshtein Distance
DialFrost
🥉
101
834ms
9 hours ago
Levenshtein Distance
edsrzf
💎
95
809ms
9 hours ago
Intersection
FoxInTheClouds
144
11ms
9 hours ago