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
Ten-pin Bowling
kg583
🥇
125
333ms
4 mins ago
Transpose Sentence
janAkali
126
420ms
49 mins ago
Cubes
canissimia
💎
167
3ms
71 mins ago
Pernicious Numbers (Long)
ryyyn
🥇
52
18ms
89 mins ago
Pernicious Numbers
ryyyn
47
9ms
101 mins ago
Lucky Numbers
ryyyn
🥇
54
12ms
107 mins ago
N Queens
edsrzf
💎
98
10ms
109 mins ago
N Queens
edsrzf
💎
132
72ms
2 hours ago
ASCII Table
Heathcorp
528
2ms
2 hours ago
Fizz Buzz
Heathcorp
603
2ms
2 hours ago
Day of Week
commandblockguy
62
8ms
2 hours ago
Transpose Sentence
TaserTheFox
148
11ms
2 hours ago
Tower of Hanoi
TaserTheFox
3,590
11ms
2 hours ago
Leap Years
morphthesworph
68
10ms
2 hours ago
Calendar
TaserTheFox
107
16ms
2 hours ago
Fibonacci
morphthesworph
45
10ms
2 hours ago
Arithmetic Numbers
morphthesworph
138
3,557ms
2 hours ago
N Queens
kg583
🥈
139
101ms
3 hours ago
Hexdump
sean-niemann
🥉
145
800ms
5 hours ago
Fibonacci
plcc0
38
137ms
5 hours ago
Fibonacci
plcc0
69
24ms
5 hours ago
Diamonds
padril
98
4ms
6 hours ago
N Queens
sean-niemann
🥈
106
1,006ms
6 hours ago
Topological Sort
jgbaldwinbrown
317
4ms
6 hours ago
Multitap Input
edsrzf
94
11ms
7 hours ago
π
lowlighter
87
11ms
7 hours ago
Emirp Numbers (Long)
sean-niemann
🥉
78
2,896ms
7 hours ago
Time Distance
kg583
💎
249
8ms
7 hours ago
Tongue-twisters
kg583
381
7ms
7 hours ago
Roman to Arabic
Yax42
117
13ms
8 hours ago
Kolakoski Constant
Yax42
113
13ms
8 hours ago
Multitap Input
frankgraziano
334
4,497ms
8 hours ago
Van Eck Sequence
error256
💎
51
151ms
8 hours ago
φ
emgordon154
🥇
142
1,750ms
9 hours ago
Kolakoski Sequence
ryyyn
57
32ms
9 hours ago
Tutorial
hollowcrystal
187
660ms
9 hours ago
Time Distance
Yax42
240
10ms
9 hours ago
Minesweeper
KatieLG
200
34ms
10 hours ago
Kolakoski Constant
amazingalek
1,020
400ms
10 hours ago
Kaprekar Numbers
ryyyn
102
4,975ms
10 hours ago
Multitap Input
GolfingSuccess
124
16ms
10 hours ago
Multitap Input
GolfingSuccess
113
357ms
10 hours ago
Minesweeper
blaztoma
🥉
127
7ms
10 hours ago
Smith Numbers
amazingalek
1,110
430ms
10 hours ago
Inventory Sequence
amazingalek
1,169
405ms
10 hours ago
Card Number Validation
jkelly467
100
2,313ms
10 hours ago
brainfuck
amazingalek
333
405ms
11 hours ago
Collatz
AstroOrbis
90
52ms
11 hours ago
Transpose Sentence
amazingalek
155
438ms
11 hours ago
Prime Numbers (Long)
amazingalek
69
408ms
11 hours ago
Pernicious Numbers (Long)
amazingalek
123
404ms
11 hours ago
Lucky Numbers
amazingalek
166
426ms
11 hours ago
Day of Week
josev814
92
14ms
11 hours ago
Game of Life
amazingalek
249
391ms
11 hours ago
Emirp Numbers (Long)
amazingalek
148
408ms
11 hours ago
Diamonds
amazingalek
142
392ms
11 hours ago
Collatz
amazingalek
🥉
83
370ms
11 hours ago
Ascending Primes
amazingalek
153
4,799ms
11 hours ago
Arithmetic Numbers
amazingalek
108
442ms
11 hours ago
Abundant Numbers (Long)
amazingalek
87
362ms
11 hours ago
12 Days of Christmas
amazingalek
502
387ms
11 hours ago
Multitap Input
edsrzf
128
2ms
11 hours ago
Day of Week
josev814
63
7ms
11 hours ago
Divisors
amazingalek
87
374ms
11 hours ago
Arabic to Roman
amazingalek
438
368ms
11 hours ago
Day of Week
josev814
60
40ms
11 hours ago
Catalan’s Constant
ryyyn
103
32ms
11 hours ago
Happy Numbers
CornerMercury
29
3ms
11 hours ago
Happy Numbers (Long)
CornerMercury
30
5ms
11 hours ago
Day of Week
jvargas6_ncstate
60
38ms
11 hours ago
Cubes
ryyyn
182
11ms
12 hours ago
Tower of Hanoi
prestosilver
74
113ms
12 hours ago
Emojify
ryyyn
134
10ms
12 hours ago
Look and Say
prestosilver
107
119ms
12 hours ago
Fibonacci
kg583
🥈
45
5ms
12 hours ago
Fibonacci
solisolu
35
90ms
13 hours ago
Musical Chords
rucin93
💎
210
6ms
13 hours ago
Polyominoes
prestosilver
🥈
420
1,162ms
13 hours ago
Look and Say
GolfingSuccess
80
359ms
13 hours ago
Fibonacci
BlueGummi
79
13ms
13 hours ago