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
Tongue-twisters
duckyluuk
302
9ms
27 mins ago
Calendar
zhaohm14
101
16ms
71 mins ago
Diamonds
lelbal
107
10ms
2 hours ago
Roman to Arabic
zhaohm14
123
21ms
2 hours ago
Fractions
zhaohm14
95
19ms
7 hours ago
24 Game
77Tigers
381
1,072ms
7 hours ago
Lucky Numbers
77Tigers
77
12ms
7 hours ago
𝑒
77Tigers
76
18ms
8 hours ago
Pernicious Numbers (Long)
77Tigers
66
21ms
8 hours ago
Emirp Numbers (Long)
77Tigers
125
179ms
8 hours ago
Prime Numbers (Long)
77Tigers
70
190ms
8 hours ago
Arrows
nemoyatpeace
177
11ms
8 hours ago
Trinomial Triangle
KatieLG-Transpiler
2,098
11ms
8 hours ago
Tower of Hanoi
KatieLG-Transpiler
4,099
12ms
8 hours ago
Tic-tac-toe
KatieLG-Transpiler
25,049
98ms
8 hours ago
Ten-pin Bowling
KatieLG-Transpiler
233
25ms
8 hours ago
Taxicab Numbers
KatieLG-Transpiler
4,656
11ms
8 hours ago
Sphenic Numbers
KatieLG-Transpiler
10,671
13ms
8 hours ago
Semiprime Numbers
KatieLG-Transpiler
15,425
15ms
8 hours ago
Polygon Triangulations
KatieLG-Transpiler
4,519
11ms
8 hours ago
Partition Numbers
KatieLG-Transpiler
758
10ms
8 hours ago
Pangram Grep
KatieLG-Transpiler
85
11ms
8 hours ago
Odd Polyomino Tiling
KatieLG-Transpiler
21,649
17ms
8 hours ago
Mandelbrot
KatieLG-Transpiler
10,056
14ms
8 hours ago
Levenshtein Distance
KatieLG-Transpiler
187
30ms
8 hours ago
Kaprekar Numbers
KatieLG-Transpiler
519
10ms
8 hours ago
Intersection
KatieLG-Transpiler
167
10ms
8 hours ago
Hilbert Curve
KatieLG-Transpiler
5,161
12ms
8 hours ago
Highly Composite Numbers
KatieLG-Transpiler
464
10ms
8 hours ago
Floyd-Steinberg Dithering
KatieLG-Transpiler
67,129
38ms
8 hours ago
Flags
KatieLG-Transpiler
6,543
20ms
8 hours ago
CSS Colors (Inverse)
KatieLG-Transpiler
3,473
14ms
8 hours ago
Apéry’s Constant
KatieLG-Transpiler
1,011
10ms
8 hours ago
Happy Numbers (Long)
77Tigers
86
309ms
8 hours ago
Mandelbrot
77Tigers
142
313ms
9 hours ago
Arabic to Roman
nemoyatpeace
191
26ms
9 hours ago
Collatz
77Tigers
74
20ms
9 hours ago
Calendar
Upload-and-View
151
16ms
10 hours ago
Christmas Trees
77Tigers
80
10ms
10 hours ago
Kaprekar Numbers
cros107
138
3,362ms
11 hours ago
Reversi
anter69
376
20ms
11 hours ago
Flags
HumanoidCPU
4,733
14ms
12 hours ago
Fizz Buzz
TheZwierzLF
81
11ms
13 hours ago
Christmas Trees
markuqwert
91
10ms
14 hours ago
Inventory Sequence
051
60
36ms
16 hours ago
Emirp Numbers
051
97
14ms
16 hours ago
Tongue-twisters
markuqwert
355
10ms
17 hours ago
Collatz
CommandLeo
71
24ms
17 hours ago
Reverse Polish Notation
051
126
49ms
17 hours ago
Farey Sequence
KatieLG
79
11ms
17 hours ago
Topological Sort
051
123
115ms
18 hours ago
Hilbert Curve
hiichbindermax
5,130
11ms
19 hours ago
Tic-tac-toe
DavidAJL
113
20ms
21 hours ago
Continued Fractions
Seek64
123
11ms
22 hours ago
Odious Numbers (Long)
jtaxen
48
18ms
25 hours ago
Odious Numbers
jtaxen
46
16ms
25 hours ago
Reverse Polish Notation
blaztoma
119
21ms
26 hours ago
√2
convlr
81
13ms
28 hours ago
Roman to Arabic
te-chnical
139
24ms
32 hours ago
Seven Segment
anter69
113
9ms
35 hours ago
Lucky Numbers
KatieLG
59
11ms
35 hours ago
Tower of Hanoi
andrewjc2000
59
11ms
35 hours ago
Zodiac Signs
blaztoma
154
12ms
35 hours ago
Calendar
DialFrost
🥇
99
16ms
36 hours ago
Cubes
JOrE20
568
10ms
36 hours ago
Billiards
FortuiteMan
220
12ms
37 hours ago
Tutorial
DavidAJL
546
11ms
38 hours ago
Calendar
bzijlema
🥇
99
16ms
41 hours ago
24 Game
TheZwierzLF
390
1,315ms
41 hours ago
Inventory Sequence
CommandLeo
60
31ms
41 hours ago
Ten-pin Bowling
Seek64
132
29ms
42 hours ago
Zeckendorf Representation
KatieLG
122
11ms
46 hours ago
Topological Sort
KatieLG
148
56ms
46 hours ago
Happy Numbers
phucthaiv02
90
10ms
47 hours ago
Prime Numbers
phucthaiv02
61
10ms
47 hours ago
24 Game
phucthaiv02
783
3,273ms
47 hours ago
Calendar
stefangimmillaro
🥇
99
16ms
2 days ago
Number Spiral
sean-niemann
101
10ms
2 days ago
Set
051
129
29ms
2 days ago
N Queens
051
163
57ms
2 days ago