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
Zodiac Signs
Seek64
147
12ms
3 hours ago
Tongue-twisters
sean-niemann
275
14ms
10 hours ago
CSS Colors
ryyyn
625
18ms
16 hours ago
Abundant Numbers (Long)
blaztoma
65
48ms
21 hours ago
Seven Segment
CommandLeo
142
9ms
21 hours ago
Scrambled Sort
blaztoma
92
11ms
21 hours ago
Ten-pin Bowling
kg583
133
29ms
23 hours ago
Fizz Buzz
albanian-laundromat
60
9ms
24 hours ago
Fizz Buzz
themoonisacheese
61
10ms
26 hours ago
Tower of Hanoi
themoonisacheese
73
12ms
26 hours ago
Multitap Input
Natanaelel
114
15ms
27 hours ago
Christmas Trees
lelbal
93
10ms
29 hours ago
Poker
bzijlema
297
22ms
30 hours ago
Farey Sequence
40fied4t
135
11ms
30 hours ago
Zeckendorf Representation
anter69
125
11ms
34 hours ago
Card Number Validation
ryyyn
86
19ms
42 hours ago
Arrows
kg583
130
32ms
43 hours ago
Minesweeper
KatieLG
190
31ms
43 hours ago
Fibonacci
FoxInTheClouds
45
30ms
43 hours ago
Lucky Numbers
kg583
56
12ms
44 hours ago
Pernicious Numbers (Long)
Pyroan
76
24ms
44 hours ago
Zodiac Signs
Pyroan
235
21ms
45 hours ago
Farey Sequence
Artemis21
113
14ms
46 hours ago
Fizz Buzz
wLui
59
10ms
46 hours ago
Calendar
Artemis21
105
16ms
46 hours ago
Quine
raketexyz
76
10ms
2 days ago
Niven Numbers
albanian-laundromat
🥇
44
10ms
2 days ago
Maze
firegene
281
11ms
2 days ago
12 Days of Christmas
sun2snow
2,382
11ms
2 days ago
Trinomial Triangle
MeWhenI
🥇
64
11ms
2 days ago
Polyominoes
blaztoma
261
14ms
2 days ago
Rijndael S-box
Languag3
190
11ms
2 days ago
Pernicious Numbers (Long)
ryyyn
🥇
52
18ms
2 days ago
Pernicious Numbers
ryyyn
47
9ms
2 days ago
Lucky Numbers
ryyyn
🥇
54
12ms
2 days ago
Transpose Sentence
TaserTheFox
148
11ms
2 days ago
Tower of Hanoi
TaserTheFox
3,590
11ms
2 days ago
Leap Years
morphthesworph
68
10ms
2 days ago
Calendar
TaserTheFox
107
16ms
2 days ago
Fibonacci
morphthesworph
45
10ms
2 days ago
Arithmetic Numbers
morphthesworph
138
3,557ms
2 days ago
Kolakoski Sequence
ryyyn
57
32ms
2 days ago
Kaprekar Numbers
ryyyn
102
4,975ms
2 days ago
Multitap Input
GolfingSuccess
124
16ms
2 days ago
Day of Week
josev814
92
14ms
2 days ago
Catalan’s Constant
ryyyn
103
32ms
2 days ago
Cubes
ryyyn
182
11ms
2 days ago
Emojify
ryyyn
134
10ms
2 days ago
Look and Say
GolfingSuccess
88
15ms
3 days ago
Multitap Input
bricknellj
128
15ms
3 days ago
Semiprime Numbers
tomh1012
168
452ms
3 days ago
United States
tomh1012
291
11ms
3 days ago
Zeckendorf Representation
tomh1012
191
10ms
3 days ago
Jacobi Symbol
celiendonze
206
11ms
3 days ago
Snake
kg583
159
14ms
3 days ago
Flags
ryyyn
4,012
16ms
3 days ago
Snake
ryyyn
157
30ms
3 days ago
Morse Encoder
FoxInTheClouds
163
10ms
3 days ago
Tutorial
AngleLaPuta
67
10ms
3 days ago
Tower of Hanoi
jatloe
60
11ms
3 days ago
Ellipse Perimeters
anter69
104
9ms
3 days ago
Taxicab Numbers
anter69
113
43ms
4 days ago
Calendar
D-MOVE
🥇
99
16ms
4 days ago
United States
dgambit
683
11ms
4 days ago
Pangram Grep
dgambit
96
10ms
4 days ago
Day of Week
dgambit
91
20ms
4 days ago
Multitap Input
AlephSquirrel
117
16ms
4 days ago
Ten-pin Bowling
blaztoma
177
24ms
4 days ago
π
FoxInTheClouds
264
72ms
4 days ago
Multitap Input
rucin93
130
15ms
4 days ago
𝑒
JesseNoEyes
67
18ms
4 days ago
99 Bottles of Beer
robbertvz
326
10ms
4 days ago
√2
JesseNoEyes
68
13ms
4 days ago
Multitap Input
anter69
130
15ms
4 days ago
Seven Segment
FoxInTheClouds
176
9ms
4 days ago
N Queens
CornerMercury
130
664ms
4 days ago
ASCII Table
CornerMercury
105
10ms
4 days ago
Multitap Input
snoozingnewt
122
15ms
4 days ago
Christmas Trees
dokutan
85
10ms
4 days ago
Multitap Input
pardouin
117
16ms
4 days ago