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
Dragon Curve
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
Dragon Curve
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
Chars
Time
Submitted
λ
JayXon
💎
111
2,779ms
15 hours ago
γ
Steffan153
🥈
65
702ms
15 hours ago
Kolakoski Sequence
madeforlosers
2,013
120ms
25 hours ago
Dragon Curve
HumanoidCPU
10,286
114ms
37 hours ago
Pernicious Numbers (Long)
Steffan153
🥇
47
147ms
42 hours ago
Dragon Curve
Shanethegamer
10,286
117ms
45 hours ago
Evil Numbers
madeforlosers
83
161ms
2 days ago
Flags
bitsandbeyond
380
228ms
2 days ago
ROT13
Steffan153
🥈
75
129ms
2 days ago
λ
Steffan153
🥈
112
2,793ms
2 days ago
Cubes
madeforlosers
2,840
128ms
2 days ago
Odious Numbers
madeforlosers
86
118ms
2 days ago
Evil Numbers (Long)
madeforlosers
1,963
120ms
2 days ago
Farey Sequence
madeforlosers
4,367
113ms
2 days ago
Odious Numbers (Long)
madeforlosers
1,958
116ms
2 days ago
Abundant Numbers
madeforlosers
176
120ms
2 days ago
Abundant Numbers (Long)
madeforlosers
977
118ms
2 days ago
Prime Numbers
madeforlosers
84
118ms
2 days ago
Look and Say
madeforlosers
1,292
120ms
2 days ago
Prime Numbers (Long)
madeforlosers
5,961
121ms
2 days ago
Divisors
madeforlosers
1,179
135ms
2 days ago
Foo Fizz Buzz Bar
madeforlosers
5,732
127ms
2 days ago
Tongue-twisters
madeforlosers
536
121ms
2 days ago
Niven Numbers (Long)
madeforlosers
7,451
116ms
2 days ago
Fizz Buzz
madeforlosers
426
117ms
3 days ago
λ
roelderickx
1,016
120ms
4 days ago
Gray Code Decoder
dokutan
64
440ms
5 days ago
Alphabetic Numbers
Shanethegamer
3,908
117ms
5 days ago
Leap Years
JayXon
💎
40
138ms
6 days ago
Pascal’s Triangle
rucin93
69
130ms
7 days ago
Musical Chords
JayXon
💎
83
134ms
7 days ago
Musical Chords
Steffan153
🥈
84
130ms
7 days ago
Gray Code Encoder
dokutan
55
138ms
8 days ago
QR Decoder
jusaka
370
164ms
9 days ago
Quine
jusaka
119
131ms
9 days ago
Pernicious Numbers (Long)
emplv
49
162ms
9 days ago
Binary Lambda Calculus
jusaka
1,177
212ms
9 days ago
Floyd-Steinberg Dithering
jusaka
647
197ms
9 days ago
Star Wars GPT
jusaka
772
218ms
9 days ago
Star Wars Opening Crawl
jusaka
895
179ms
9 days ago
Sudoku (Fill-in)
jusaka
1,406
266ms
9 days ago
Sudoku
jusaka
1,127
253ms
9 days ago
Mahjong
jusaka
1,089
279ms
9 days ago
Flags
jusaka
4,605
268ms
9 days ago
CSS Grid
jusaka
894
223ms
9 days ago
NFA Simulator
jusaka
1,109
206ms
9 days ago
DFA Simulator
jusaka
1,001
189ms
9 days ago
United States
jusaka
902
172ms
9 days ago
Spelling Numbers
jusaka
911
209ms
9 days ago
p-adic Expansion
jusaka
1,104
223ms
9 days ago
Billiards
jusaka
355
170ms
9 days ago
Forsyth–Edwards Notation
jusaka
512
184ms
9 days ago
Emojify
jusaka
314
189ms
9 days ago
Calendar
jusaka
591
211ms
9 days ago
Maze
jusaka
1,095
281ms
9 days ago
brainfuck
jusaka
782
258ms
9 days ago
CSS Colors (Inverse)
jusaka
3,125
222ms
9 days ago
CSS Colors
jusaka
3,312
173ms
9 days ago
Musical Chords
jusaka
1,009
204ms
9 days ago
Set
jusaka
620
209ms
9 days ago
Poker
jusaka
1,371
273ms
9 days ago
SI Units
jusaka
1,166
297ms
9 days ago
Reversi
jusaka
840
237ms
9 days ago
Snake
jusaka
753
193ms
9 days ago
Turtle
jusaka
844
194ms
9 days ago
Connect Four
jusaka
1,012
270ms
9 days ago
Ten-pin Bowling
jusaka
976
225ms
9 days ago
Continued Fractions
jusaka
300
154ms
9 days ago
Tic-tac-toe
jusaka
494
211ms
9 days ago
Multitap Input
jusaka
468
180ms
9 days ago
Rectangle Fill
jusaka
674
207ms
9 days ago
Game of Life
jusaka
612
198ms
9 days ago
Medal Tally
jusaka
367
177ms
9 days ago
Time Distance
jusaka
571
204ms
9 days ago
Arrows
jusaka
697
241ms
9 days ago
Topological Sort
jusaka
637
204ms
9 days ago
Repeating Decimals
jusaka
723
182ms
9 days ago
Ellipse Perimeters
jusaka
338
158ms
9 days ago
Zeckendorf Representation
jusaka
328
166ms
9 days ago
Zodiac Signs
jusaka
837
194ms
9 days ago