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
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
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
><>
ALGOL 68
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
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
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
Quadratic Formula
bitsandbeyond
202
439ms
40 mins ago
Tower of Hanoi
AidanWalter
348
366ms
18 hours ago
Rectangle Fill
bitsandbeyond
94
323ms
19 hours ago
Recamán
madex
53
294ms
23 hours ago
Fizz Buzz
madex
48
225ms
23 hours ago
Pascal’s Triangle
madex
49
221ms
23 hours ago
Catalan Numbers
madex
34
244ms
23 hours ago
Diamonds
madex
65
229ms
23 hours ago
Evil Numbers
madex
🥈
28
225ms
23 hours ago
Abundant Numbers
madex
51
267ms
23 hours ago
Odious Numbers
madex
30
235ms
23 hours ago
Ordinal Numbers
madex
67
256ms
23 hours ago
ROT13
madex
63
194ms
23 hours ago
Fibonacci
madex
31
246ms
23 hours ago
Tower of Hanoi
madex
55
239ms
23 hours ago
Divisors
madex
🥈
33
262ms
23 hours ago
Prime Numbers
madex
34
261ms
23 hours ago
Look and Say
madex
61
236ms
23 hours ago
Happy Numbers
madex
59
396ms
23 hours ago
Leap Years
madex
32
355ms
23 hours ago
Collatz
madex
52
271ms
23 hours ago
Niven Numbers
madex
31
237ms
23 hours ago
Pangram Grep
madex
47
278ms
23 hours ago
SI Units
madex
775
499ms
45 hours ago
Fractions
madex
120
259ms
3 days ago
Pernicious Numbers
GolfingSuccess
🥇
22
266ms
3 days ago
Day of Week
Natanaelel
🥇
16
327ms
4 days ago
Alphabetic Numbers
bitsandbeyond
84
361ms
8 days ago
Pascal’s Triangle
IISResetMe
54
274ms
11 days ago
Alphabetic Numbers
HumanoidCPU
3,894
345ms
11 days ago
12 Days of Christmas
gasykart
486
276ms
14 days ago
Rule 110
bitsandbeyond
🥈
68
389ms
14 days ago
Tower of Hanoi
tomh1012
94
297ms
15 days ago
Smith Numbers
bitsandbeyond
💎
81
4,620ms
15 days ago
Binary Lambda Calculus
bitsandbeyond
118
526ms
16 days ago
Multitap Input
IISResetMe
🥉
115
357ms
17 days ago
Prime Numbers
isenschmid
36
237ms
18 days ago
Prime Numbers
Murphy4444
70
272ms
18 days ago
Game of Life
bitsandbeyond
🥈
82
404ms
18 days ago
Calendar
bitsandbeyond
💎
92
406ms
21 days ago
SI Units
JOrE20
2,652
1,376ms
21 days ago
Continued Fractions
bitsandbeyond
🦄
81
393ms
22 days ago
p-adic Expansion
bitsandbeyond
115
520ms
22 days ago
Morse Decoder
bitsandbeyond
💎
90
339ms
22 days ago
United States
bitsandbeyond
💎
80
304ms
22 days ago
QR Encoder
bitsandbeyond
168
522ms
22 days ago
Proximity Grid
bitsandbeyond
💎
86
279ms
22 days ago
Repeating Decimals
bitsandbeyond
💎
92
388ms
22 days ago
Reversi
bitsandbeyond
💎
83
260ms
22 days ago
Maze
bitsandbeyond
💎
88
4,379ms
22 days ago
brainfuck
bitsandbeyond
💎
90
666ms
22 days ago
Intersection
bitsandbeyond
💎
82
503ms
22 days ago
Hexdump
bitsandbeyond
💎
86
532ms
22 days ago
Levenshtein Distance
bitsandbeyond
💎
92
434ms
22 days ago
Lucky Tickets
bitsandbeyond
🥈
78
303ms
22 days ago
Snake
bitsandbeyond
89
420ms
22 days ago
Spelling Numbers
bitsandbeyond
💎
148
449ms
22 days ago
12 Days of Christmas
MaMeWoM
545
284ms
22 days ago
Star Wars GPT
bitsandbeyond
💎
85
516ms
22 days ago
Sudoku
bitsandbeyond
💎
146
2,200ms
22 days ago
DFA Simulator
bitsandbeyond
💎
95
4,934ms
22 days ago
Time Distance
bitsandbeyond
💎
117
622ms
22 days ago
Set
bitsandbeyond
💎
90
4,919ms
22 days ago
Topological Sort
bitsandbeyond
💎
77
3,841ms
22 days ago
Connect Four
bitsandbeyond
106
4,523ms
22 days ago
Turtle
bitsandbeyond
115
3,837ms
22 days ago
Ten-pin Bowling
bitsandbeyond
💎
91
380ms
22 days ago
Mahjong
bitsandbeyond
💎
120
4,520ms
22 days ago
Floyd-Steinberg Dithering
bitsandbeyond
102
2,890ms
22 days ago
Jacobi Symbol
bitsandbeyond
💎
84
407ms
22 days ago
Zeckendorf Representation
bitsandbeyond
💎
73
365ms
22 days ago
Billiards
bitsandbeyond
💎
93
408ms
22 days ago
Arabic to Roman
bitsandbeyond
💎
79
709ms
22 days ago
SI Units
bitsandbeyond
💎
193
1,501ms
22 days ago
Forsyth–Edwards Notation
bitsandbeyond
💎
77
414ms
22 days ago
Morse Encoder
bitsandbeyond
💎
97
284ms
22 days ago
Calendar
juliansiebert
🥉
142
354ms
23 days ago
Intersection
kasarino
353
333ms
23 days ago
NFA Simulator
bitsandbeyond
133
715ms
25 days ago
Star Wars Opening Crawl
bitsandbeyond
💎
123
455ms
26 days ago