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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
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
><>
ALGOL 68
ArkScript
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
APL
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
Continued Fractions
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
Gray Code Decoder
Gray Code Encoder
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Fibonacci
CheeseCake628
320
1,654ms
a min ago
γ
Steffan153
🥈
65
702ms
a min ago
Tower of Hanoi
bitsandbeyond
79
140ms
10 mins ago
Tower of Hanoi
bitsandbeyond
116
179ms
11 mins ago
Tower of Hanoi
bitsandbeyond
83
9ms
12 mins ago
Pernicious Numbers (Long)
Herbert00709
80
59ms
16 mins ago
Taxicab Numbers
msbranicky
141
42ms
27 mins ago
Pernicious Numbers (Long)
Herbert00709
61
4ms
28 mins ago
Tower of Hanoi
bitsandbeyond
68
1,074ms
52 mins ago
γ
Steffan153
67
50ms
55 mins ago
γ
Steffan153
66
410ms
55 mins ago
γ
Steffan153
76
460ms
57 mins ago
Tower of Hanoi
bitsandbeyond
🥉
66
84ms
60 mins ago
Tower of Hanoi
bitsandbeyond
68
15ms
62 mins ago
γ
Steffan153
69
102ms
75 mins ago
Tower of Hanoi
bitsandbeyond
105
64ms
111 mins ago
Cubes
LostSyntax21
192
10ms
111 mins ago
λ
ovs-code
312
2,978ms
117 mins ago
Farey Sequence
madex
88
2ms
2 hours ago
Tower of Hanoi
bitsandbeyond
86
45ms
2 hours ago
Farey Sequence
madex
57
58ms
2 hours ago
Intersection
DayDun
🥉
85
5ms
2 hours ago
Farey Sequence
madex
79
11ms
2 hours ago
Tower of Hanoi
bitsandbeyond
99
10ms
2 hours ago
Farey Sequence
madex
100
2,424ms
2 hours ago
Star Wars Opening Crawl
scpchicken
🦄
4,480
13ms
2 hours ago
ASCII Table
DayDun
96
4ms
2 hours ago
Catalan Numbers
Steffan153
💎
294
187ms
2 hours ago
Musical Chords
scpchicken
💎
4,604
53ms
2 hours ago
λ
kumavale
🥇
234
123ms
3 hours ago
Sudoku (Fill-in)
bknower
541
76ms
3 hours ago
Happy Numbers
BrunoVisnadi
79
50ms
3 hours ago
Happy Numbers (Long)
BrunoVisnadi
80
184ms
3 hours ago
Diamonds
roupiq
131
436ms
3 hours ago
Niven Numbers
firegene
47
38ms
3 hours ago
Star Wars Opening Crawl
albanian-laundromat
💎
463
49ms
4 hours ago
Evil Numbers
firegene
26
33ms
4 hours ago
Tower of Hanoi
bitsandbeyond
67
4ms
4 hours ago
Musical Chords
scpchicken
158
177ms
4 hours ago
Transpose Sentence
matanberstadt
128
565ms
4 hours ago
Niven Numbers
madeforlosers
397
5ms
4 hours ago
Vampire Numbers
namelessiw
41
2,977ms
4 hours ago
Christmas Trees
emgordon154
84
2ms
4 hours ago
Catalan Numbers
Steffan153
💎
236
50ms
4 hours ago
Diamonds
emgordon154
106
3ms
4 hours ago
Zodiac Signs
emgordon154
260
4ms
4 hours ago
Cubes
FortuiteMan
435
279ms
4 hours ago
Cubes
FortuiteMan
196
10ms
4 hours ago
Continued Fractions
FortuiteMan
244
260ms
4 hours ago
Collatz
FortuiteMan
113
262ms
5 hours ago
Ten-pin Bowling
prestosilver
365
569ms
5 hours ago
Tutorial
FortuiteMan
592
2,067ms
5 hours ago
Pascal’s Triangle
firegene
🥇
15
33ms
5 hours ago
Fibonacci
FortuiteMan
432
1,768ms
5 hours ago
Emirp Numbers (Long)
firegene
46
51ms
5 hours ago
Alphabetic Numbers
scpchicken
184
42ms
5 hours ago
Emirp Numbers
firegene
45
44ms
5 hours ago
Foo Fizz Buzz Bar
emgordon154
106
6ms
5 hours ago
Fizz Buzz
emgordon154
77
3ms
5 hours ago
Gray Code Encoder
emgordon154
139
24ms
5 hours ago
Alphabetic Numbers
scpchicken
157
4ms
6 hours ago
Quine
emgordon154
137
4ms
6 hours ago
brainfuck
roupiq
209
71ms
6 hours ago
Musical Chords
sean-niemann
🥉
359
50ms
6 hours ago
QR Decoder
prestosilver
273
513ms
6 hours ago
Musical Chords
albanian-laundromat
💎
225
45ms
7 hours ago
Transpose Sentence
emgordon154
147
15ms
7 hours ago
Prime Numbers (Long)
emgordon154
🥇
54
273ms
7 hours ago
Minesweeper
5cw
145
353ms
7 hours ago
Prime Numbers
emgordon154
53
2ms
7 hours ago
Maze
emgordon154
🥉
192
27ms
7 hours ago
Niven Numbers (Long)
emgordon154
75
9ms
7 hours ago
Christmas Trees
FortuiteMan
159
266ms
7 hours ago
Catalan Numbers
FortuiteMan
265
273ms
7 hours ago
Card Number Validation
FortuiteMan
181
276ms
7 hours ago
Hexdump
CornerMercury
94
10ms
7 hours ago
Hexdump
ndren
94
10ms
7 hours ago
Calendar
FortuiteMan
459
270ms
7 hours ago
λ
emgordon154
562
3ms
7 hours ago
brainfuck
FortuiteMan
328
332ms
7 hours ago