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
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
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
Bytes
Time
Submitted
Gray Code Decoder
duckyluuk
67
488ms
a min ago
Continued Fractions
duckyluuk
115
433ms
a min ago
Gijswijt’s Sequence
lelbal
147
11ms
a min ago
Tower of Hanoi
duckyluuk
55
439ms
2 mins ago
Calendar
duckyluuk
98
460ms
2 mins ago
Sudoku
matanberstadt
572
460ms
2 mins ago
Collatz
Jonson26
100
380ms
3 mins ago
DFA Simulator
GolfingSuccess
🥇
177
9ms
4 mins ago
Farey Sequence
dcc5480
142
14ms
4 mins ago
CSS Colors
duckyluuk
83
447ms
4 mins ago
Maze
jusaka
88
7ms
5 mins ago
Niven Numbers
GolfingSuccess
🥇
38
2ms
6 mins ago
Arithmetic Numbers
GolfingSuccess
🥉
167
1,707ms
9 mins ago
Evil Numbers
GolfingSuccess
121
1,743ms
10 mins ago
Odious Numbers
GolfingSuccess
121
1,675ms
10 mins ago
Evil Numbers (Long)
GolfingSuccess
123
1,681ms
11 mins ago
Odious Numbers (Long)
GolfingSuccess
122
1,663ms
12 mins ago
Niven Numbers
GolfingSuccess
🥇
121
1,680ms
14 mins ago
Emirp Numbers (Long)
Jonson26
184
423ms
15 mins ago
Emirp Numbers
Jonson26
184
393ms
16 mins ago
Divisors
GolfingSuccess
🥇
137
1,723ms
17 mins ago
Maze
jared-hughes
🦄
298
40ms
18 mins ago
Billiards
jusaka
63
3ms
19 mins ago
Abundant Numbers
dcc5480
70
11ms
23 mins ago
Pernicious Numbers (Long)
rucin93
48
13ms
24 mins ago
Pernicious Numbers
jusaka
🥇
15
40ms
25 mins ago
Fibonacci
dcc5480
38
10ms
27 mins ago
Card Number Validation
sultan
132
18ms
29 mins ago
Smooth Numbers
GolfingSuccess
266
2,226ms
29 mins ago
Odious Numbers (Long)
dcc5480
53
11ms
32 mins ago
Odious Numbers
dcc5480
51
10ms
32 mins ago
Van Eck Sequence
edsrzf
💎
77
42ms
33 mins ago
Pangram Grep
GolfingSuccess
🥉
211
1,727ms
33 mins ago
Evil Numbers (Long)
dcc5480
53
10ms
35 mins ago
𝑒
BREMAUCY
1,309
1,678ms
36 mins ago
ROT13
sultan
144
397ms
37 mins ago
Van Eck Sequence
jusaka
19
82ms
37 mins ago
ROT13
sultan
122
446ms
41 mins ago
ROT13
sultan
71
11ms
45 mins ago
Van Eck Sequence
edsrzf
🥉
93
99ms
46 mins ago
Tutorial
GolfingSuccess
197
1,997ms
50 mins ago
Sudoku (Fill-in)
jusaka
174
6ms
50 mins ago
Evil Numbers
dcc5480
51
10ms
51 mins ago
Pernicious Numbers (Long)
Jonson26
129
389ms
57 mins ago
Pernicious Numbers
Jonson26
126
404ms
57 mins ago
Gray Code Decoder
dcc5480
111
20ms
62 mins ago
Number Spiral
plcc0
100
10ms
63 mins ago
Trinomial Triangle
edsrzf
🥈
122
37ms
66 mins ago
Catalan Numbers
jusaka
109
3ms
79 mins ago
𝑒
voytxt
1,064
1,696ms
82 mins ago
√2
voytxt
1,064
1,669ms
82 mins ago
φ
voytxt
1,064
1,650ms
82 mins ago
τ
voytxt
1,064
1,695ms
82 mins ago
π
voytxt
1,064
1,622ms
82 mins ago
λ
voytxt
1,064
1,730ms
82 mins ago
γ
voytxt
🥈
1,064
1,631ms
83 mins ago
Quine
voytxt
🥇
80
1,584ms
83 mins ago
Niven Numbers
jusaka
26
40ms
86 mins ago
Rijndael S-box
MostParsingVex
🥈
215
1,762ms
92 mins ago
N Queens
MostParsingVex
🥈
412
1,698ms
92 mins ago
Lucky Numbers
dcc5480
111
13ms
94 mins ago
Pernicious Numbers (Long)
edsrzf
🥉
103
104ms
97 mins ago
Prime Numbers (Long)
Jonson26
81
3,688ms
98 mins ago
Prime Numbers
HumanoidCPU
147
1,711ms
98 mins ago
Prime Numbers
Jonson26
79
11ms
99 mins ago
Prime Numbers
Jonson26
97
383ms
103 mins ago
Prime Numbers (Long)
Jonson26
98
459ms
103 mins ago
ASCII Table
sultan
145
465ms
108 mins ago
Day of Week
sultan
67
380ms
109 mins ago
QR Decoder
jusaka
109
3ms
110 mins ago
Star Wars Opening Crawl
targrik
440
7ms
112 mins ago
Niven Numbers (Long)
Jonson26
100
404ms
115 mins ago
Niven Numbers
Jonson26
98
392ms
116 mins ago
Ordinal Numbers
sultan
124
358ms
117 mins ago
Rijndael S-box
MostParsingVex
💎
437
101ms
117 mins ago
Pernicious Numbers
GolfingSuccess
🥇
115
1,684ms
118 mins ago
12 Days of Christmas
supersonicbyte
2,415
80ms
119 mins ago
Fractions
sultan
162
396ms
119 mins ago
Fizz Buzz
roupiq
83
52ms
119 mins ago
Tutorial
DayDun
67
2ms
119 mins ago