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
Reverse Polish Notation
scpchicken
170
20ms
a min ago
Sierpiński Triangle
jusaka
135
134ms
a min ago
Tutorial
phSHARP
72
15ms
a min ago
Reverse Polish Notation
jusaka
244
189ms
2 mins ago
Tutorial
phSHARP
31
6ms
5 mins ago
Van Eck Sequence
vang1ong7ang
124
150ms
6 mins ago
Tower of Hanoi
vang1ong7ang
102
157ms
7 mins ago
Topological Sort
vang1ong7ang
537
314ms
8 mins ago
Time Distance
vang1ong7ang
499
191ms
8 mins ago
Tic-tac-toe
vang1ong7ang
237
206ms
8 mins ago
Ten-pin Bowling
vang1ong7ang
426
192ms
9 mins ago
Sudoku
vang1ong7ang
852
195ms
9 mins ago
Spelling Numbers
vang1ong7ang
542
256ms
10 mins ago
Seven Segment
vang1ong7ang
396
257ms
11 mins ago
Set
vang1ong7ang
320
225ms
12 mins ago
brainfuck
jusaka
381
157ms
12 mins ago
Rule 110
vang1ong7ang
235
208ms
12 mins ago
ROT13
vang1ong7ang
152
161ms
13 mins ago
Roman to Arabic
vang1ong7ang
198
169ms
13 mins ago
Rock-paper-scissors-Spock-lizard
vang1ong7ang
553
172ms
13 mins ago
Rijndael S-box
vang1ong7ang
285
136ms
14 mins ago
Arabic to Roman
CaedenHarper
119
397ms
14 mins ago
Recamán
vang1ong7ang
152
169ms
15 mins ago
Proximity Grid
vang1ong7ang
781
315ms
15 mins ago
Poker
vang1ong7ang
701
391ms
16 mins ago
Billiards
jusaka
477
300ms
16 mins ago
Ordinal Numbers
vang1ong7ang
173
166ms
17 mins ago
Niven Numbers (Long)
vang1ong7ang
101
172ms
19 mins ago
Niven Numbers
vang1ong7ang
126
122ms
19 mins ago
Polyominoes
vang1ong7ang
459
271ms
26 mins ago
SI Units
CaedenHarper
💎
468
4,151ms
26 mins ago
Star Wars Opening Crawl
jusaka
972
307ms
27 mins ago
United States
CaedenHarper
415
46ms
28 mins ago
Morse Decoder
jusaka
395
247ms
30 mins ago
Van Eck Sequence
edsrzf
🥇
71
5ms
30 mins ago
Morse Encoder
jusaka
412
185ms
31 mins ago
Divisors
Zin9zan9
🥇
57
11ms
32 mins ago
φ
jusaka
604
192ms
35 mins ago
𝑒
jusaka
170
127ms
37 mins ago
Number Spiral
FortuiteMan
475
119ms
38 mins ago
Spelling Numbers
CaedenHarper
326
120ms
38 mins ago
√2
jusaka
490
174ms
39 mins ago
Emojify
CaedenHarper
246
43ms
42 mins ago
ISBN
phSHARP
104
11ms
43 mins ago
Look and Say
scpchicken
88
25ms
46 mins ago
τ
jusaka
317
175ms
52 mins ago
π
jusaka
317
178ms
52 mins ago
ln 2
jusaka
417
185ms
54 mins ago
Van Eck Sequence
edsrzf
72
5ms
57 mins ago
Day of Week
CaedenHarper
107
83ms
67 mins ago
12 Days of Christmas
CaedenHarper
422
52ms
67 mins ago
Tongue-twisters
jusaka
543
115ms
69 mins ago
Repeating Decimals
jusaka
494
283ms
70 mins ago
Gray Code Decoder
emplv
🥇
47
13ms
70 mins ago
Calendar
jusaka
503
247ms
71 mins ago
brainfuck
CaedenHarper
105
305ms
73 mins ago
12 Days of Christmas
jusaka
565
136ms
78 mins ago
Spelling Numbers
jusaka
575
187ms
79 mins ago
Kaprekar Numbers
jusaka
149
606ms
80 mins ago
Kolakoski Sequence
Steffan153
🥇
73
12ms
82 mins ago
Leyland Numbers
jusaka
253
225ms
83 mins ago
Set
kasarino
355
2ms
84 mins ago
Catalan Numbers
jusaka
323
150ms
84 mins ago
Look and Say
CaedenHarper
94
3ms
87 mins ago
Cubes
jusaka
370
173ms
90 mins ago
Hilbert Curve
jusaka
540
185ms
98 mins ago
Evil Numbers
PlatoHero
56
263ms
99 mins ago
Divisors
PlatoHero
71
269ms
103 mins ago
Van Eck Sequence
Steffan153
🥇
63
3ms
104 mins ago
Pangram Grep
kasarino
143
428ms
105 mins ago
√2
Steffan153
🥈
109
1,276ms
108 mins ago
Sphenic Numbers
jusaka
138
134ms
110 mins ago
Van Eck Sequence
edsrzf
🥇
53
3ms
2 hours ago
φ
DayDun
53
35ms
2 hours ago
φ
Steffan153
🥉
106
620ms
2 hours ago
Diamonds
PlatoHero
117
244ms
2 hours ago
Lucky Tickets
ahmetdemirag
215
13ms
2 hours ago
𝑒
Steffan153
🥇
76
342ms
2 hours ago
Niven Numbers
PlatoHero
55
285ms
2 hours ago
φ
Steffan153
51
2,405ms
2 hours ago