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
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
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
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
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
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
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
ASCII Table
denkyuu1
97
37ms
6 mins ago
Arrows
Steffan153
🦄
187
82ms
6 mins ago
ASCII Table
denkyuu1
121
444ms
17 mins ago
Roman to Arabic
Steffan153
🦄
154
84ms
20 mins ago
Arabic to Roman
Steffan153
🦄
204
104ms
26 mins ago
Gijswijt’s Sequence
emgordon154
47
3ms
44 mins ago
Gijswijt’s Sequence
Steffan153
🥉
138
274ms
54 mins ago
Gijswijt’s Sequence
Steffan153
💎
112
100ms
59 mins ago
Zodiac Signs
CaedenHarper
270
413ms
60 mins ago
Zeckendorf Representation
CaedenHarper
171
357ms
60 mins ago
Topological Sort
CaedenHarper
574
492ms
60 mins ago
Time Distance
CaedenHarper
315
401ms
61 mins ago
Star Wars Opening Crawl
CaedenHarper
782
443ms
61 mins ago
Reverse Polish Notation
CaedenHarper
225
366ms
61 mins ago
Lucky Tickets
CaedenHarper
312
463ms
62 mins ago
Jacobi Symbol
CaedenHarper
199
413ms
62 mins ago
Fractions
CaedenHarper
149
394ms
62 mins ago
Continued Fractions
CaedenHarper
178
419ms
66 mins ago
Sudoku (Fill-in)
CaedenHarper
714
649ms
68 mins ago
Spelling Numbers
CaedenHarper
425
435ms
68 mins ago
Repeating Decimals
CaedenHarper
265
420ms
68 mins ago
Polyominoes
CaedenHarper
1,020
468ms
68 mins ago
Ordinal Numbers
CaedenHarper
168
420ms
69 mins ago
Emirp Numbers (Long)
CaedenHarper
183
522ms
69 mins ago
Emirp Numbers
CaedenHarper
183
393ms
70 mins ago
Billiards
CaedenHarper
266
389ms
70 mins ago
Gray Code Decoder
sean-niemann
60
458ms
71 mins ago
Transpose Sentence
sean-niemann
🥉
118
449ms
80 mins ago
Gray Code Encoder
edsrzf
50
872ms
85 mins ago
Gijswijt’s Sequence
Steffan153
💎
80
11ms
86 mins ago
Arabic to Roman
CaedenHarper
321
503ms
97 mins ago
Gray Code Encoder
CaedenHarper
86
399ms
99 mins ago
Gray Code Encoder
Steffan153
50
776ms
100 mins ago
Gray Code Encoder
CaedenHarper
50
733ms
105 mins ago
Gijswijt’s Sequence
emgordon154
65
334ms
109 mins ago
Gijswijt’s Sequence
emgordon154
65
12ms
109 mins ago
Gray Code Encoder
albanian-laundromat
243
15ms
112 mins ago
Gray Code Encoder
albanian-laundromat
58
39ms
2 hours ago
Star Wars GPT
jameswmccarty
322
12ms
2 hours ago
Gray Code Encoder
albanian-laundromat
88
48ms
2 hours ago
Christmas Trees
Steffan153
🥈
122
17ms
2 hours ago
Seven Segment
kg583
💎
177
70ms
2 hours ago
Odious Numbers
Steffan153
🥇
78
3ms
2 hours ago
Tower of Hanoi
dokutan
72
2ms
2 hours ago
Odious Numbers
GolfingSuccess
🥇
78
71ms
2 hours ago
Gray Code Encoder
albanian-laundromat
64
188ms
2 hours ago
Pascal’s Triangle
GolfingSuccess
🥇
99
41ms
3 hours ago
Seven Segment
GolfingSuccess
🥈
209
77ms
3 hours ago
Gray Code Encoder
albanian-laundromat
78
100ms
3 hours ago
Gray Code Encoder
albanian-laundromat
81
120ms
3 hours ago
Gray Code Encoder
albanian-laundromat
99
851ms
3 hours ago
Gray Code Encoder
albanian-laundromat
45
32ms
3 hours ago
Transpose Sentence
cefqrn
464
62ms
3 hours ago
Gray Code Encoder
albanian-laundromat
151
29ms
4 hours ago
Abundant Numbers
GolfingSuccess
🥈
91
76ms
4 hours ago
Maze
edsrzf
🥈
184
84ms
4 hours ago
Gray Code Encoder
CaedenHarper
19
80ms
4 hours ago
Abundant Numbers (Long)
GolfingSuccess
🥇
91
107ms
4 hours ago
Pernicious Numbers (Long)
dokutan
158
54ms
4 hours ago
Niven Numbers (Long)
dokutan
159
25ms
4 hours ago
Odious Numbers (Long)
dokutan
147
14ms
4 hours ago
Evil Numbers (Long)
dokutan
149
14ms
4 hours ago
Christmas Trees
kg583
💎
119
3ms
4 hours ago
Gijswijt’s Sequence
emgordon154
85
5ms
4 hours ago
Arithmetic Numbers
dokutan
112
3,377ms
4 hours ago
Divisors
dokutan
91
79ms
4 hours ago
Abundant Numbers
dokutan
100
79ms
4 hours ago
Maze
Steffan153
💎
175
337ms
4 hours ago
Abundant Numbers (Long)
dokutan
101
114ms
4 hours ago
Prime Numbers
dokutan
76
10ms
4 hours ago
Prime Numbers (Long)
dokutan
78
25ms
4 hours ago
Transpose Sentence
cefqrn
116
10ms
4 hours ago
Maze
kg583
🥉
194
21ms
4 hours ago
Factorial Factorisation
dokutan
🥉
750
50ms
4 hours ago
Niven Numbers
DialFrost
101
11ms
4 hours ago
√2
dokutan
🥈
479
17ms
4 hours ago
φ
dokutan
🥈
479
17ms
4 hours ago
τ
dokutan
🥈
479
17ms
4 hours ago
π
dokutan
🥈
479
17ms
4 hours ago
λ
dokutan
💎
479
17ms
4 hours ago