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
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
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
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
Lily
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
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
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
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
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
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
Chars
Time
Submitted
Day of Week
DialFrost
86
119ms
a min ago
Billiards
Steffan153
162
477ms
2 mins ago
Tutorial
Steffan153
72
28ms
5 mins ago
Emojify
Steffan153
💎
101
27ms
13 mins ago
Arabic to Roman
Steffan153
🥈
175
33ms
17 mins ago
Day of Week
Steffan153
💎
194
32ms
17 mins ago
Fractions
Steffan153
🥇
123
29ms
18 mins ago
Intersection
Steffan153
🥉
154
32ms
20 mins ago
Lucky Tickets
Steffan153
💎
193
31ms
21 mins ago
Morse Encoder
Steffan153
🥈
208
28ms
21 mins ago
Transpose Sentence
edsrzf
💎
126
31ms
21 mins ago
Ordinal Numbers
Steffan153
🥉
132
31ms
22 mins ago
12 Days of Christmas
OSYCh314
505
10ms
24 mins ago
Reverse Polish Notation
Steffan153
🥉
192
32ms
25 mins ago
Roman to Arabic
Steffan153
🥈
136
34ms
25 mins ago
Transpose Sentence
Steffan153
🥈
127
40ms
26 mins ago
United States
Steffan153
💎
167
29ms
27 mins ago
Zeckendorf Representation
Steffan153
💎
131
30ms
27 mins ago
Zodiac Signs
Steffan153
187
32ms
28 mins ago
Fibonacci
Steffan153
🥇
30
2ms
29 mins ago
Niven Numbers
Steffan153
🥉
40
3ms
31 mins ago
Pernicious Numbers
Steffan153
35
2ms
31 mins ago
Rule 110
Steffan153
🥉
94
87ms
33 mins ago
Arrows
Steffan153
🥇
100
5ms
34 mins ago
Medal Tally
Steffan153
98
11ms
35 mins ago
Sierpiński Triangle
Steffan153
💎
53
4ms
36 mins ago
Divisors
Steffan153
🥇
37
6ms
36 mins ago
Ten-pin Bowling
Steffan153
🥇
89
8ms
38 mins ago
Recamán
Steffan153
🥈
65
4ms
38 mins ago
Multitap Input
OSYCh314
265
11ms
41 mins ago
Morse Decoder
Steffan153
💎
130
4ms
41 mins ago
Factorial Factorisation
Steffan153
🥉
90
2,441ms
42 mins ago
ASCII Table
Steffan153
🥈
95
4ms
42 mins ago
Arabic to Roman
Steffan153
🥉
112
13ms
45 mins ago
Evil Numbers (Long)
Steffan153
🥉
40
6ms
45 mins ago
Forsyth–Edwards Notation
Steffan153
🥈
95
5ms
45 mins ago
Game of Life
Steffan153
💎
100
352ms
45 mins ago
Happy Numbers (Long)
Steffan153
💎
57
13ms
46 mins ago
ISBN
Steffan153
68
5ms
46 mins ago
Odious Numbers (Long)
Steffan153
🥉
40
6ms
47 mins ago
Transpose Sentence
Steffan153
🥇
47
6ms
48 mins ago
Intersection
Steffan153
🥈
85
5ms
49 mins ago
Arabic to Roman
Yewzir
228
7ms
51 mins ago
Hilbert Curve
Steffan153
245
532ms
58 mins ago
Musical Chords
JayXon
🥇
156
210ms
58 mins ago
Musical Chords
Steffan153
134
468ms
60 mins ago
Musical Chords
Steffan153
92
38ms
61 mins ago
Star Wars GPT
jameswmccarty
324
19ms
62 mins ago
Musical Chords
Steffan153
102
1,278ms
62 mins ago
Musical Chords
Steffan153
148
17ms
64 mins ago
Musical Chords
JayXon
💎
76
571ms
67 mins ago
Seven Segment
Yewzir
204
2ms
68 mins ago
Ordinal Numbers
Yewzir
136
3ms
76 mins ago
Musical Chords
JayXon
💎
78
385ms
76 mins ago
Tutorial
chl
28
6ms
77 mins ago
Musical Chords
JayXon
💎
83
23ms
77 mins ago
Star Wars GPT
error256
71
38ms
79 mins ago
Billiards
Steffan153
166
17ms
98 mins ago
Recamán
Yewzir
140
3ms
2 hours ago
Rijndael S-box
emgordon154
92
1,392ms
2 hours ago
Rijndael S-box
emgordon154
🥈
119
404ms
2 hours ago
Set
Steffan153
74
67ms
3 hours ago
12 Days of Christmas
emgordon154
499
533ms
3 hours ago
π
Carlos-EAC
1,008
1,021ms
3 hours ago
Set
Steffan153
115
507ms
3 hours ago
π
Carlos-EAC
1,011
2ms
3 hours ago
Set
Steffan153
123
28ms
3 hours ago
γ
Flekay
157
56ms
3 hours ago
Evil Numbers (Long)
Steffan153
32
41ms
3 hours ago
Tic-tac-toe
Steffan153
77
12ms
4 hours ago
Catalan Numbers
Flekay
49
10ms
4 hours ago
Catalan’s Constant
Flekay
178
20ms
4 hours ago
Catalan Numbers
edsrzf
🥉
289
40ms
4 hours ago
Kaprekar Numbers
Yewzir
145
4,215ms
4 hours ago
Look and Say
Yewzir
130
2ms
4 hours ago
Multitap Input
denkyuu1
74
37ms
4 hours ago
Number Spiral
Yewzir
227
2ms
5 hours ago
Star Wars GPT
error256
💎
137
13ms
5 hours ago
Inventory Sequence
Yewzir
126
10ms
5 hours ago
Leyland Numbers
Yewzir
150
2ms
5 hours ago