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
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
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
Bytes
Time
Submitted
United States
prestosilver
643
376ms
a min ago
Calendar
anter69
🦄
884
182ms
a min ago
Multitap Input
jgbaldwinbrown
214
3ms
a min ago
Multitap Input
albanian-laundromat
🥈
227
27ms
4 mins ago
Tower of Hanoi
ZakkkkAttackkkk
84
20ms
10 mins ago
Tutorial
FoxInTheClouds
67
12ms
20 mins ago
ISBN
matricronia
123
16ms
22 mins ago
Odious Numbers (Long)
Thinkr1
41
33ms
25 mins ago
Odious Numbers
Thinkr1
40
32ms
26 mins ago
Transpose Sentence
prestosilver
141
341ms
36 mins ago
Evil Numbers
Thinkr1
40
35ms
49 mins ago
Evil Numbers (Long)
Thinkr1
41
34ms
49 mins ago
Calendar
SectorCorruptor
118
17ms
50 mins ago
Evil Numbers
kasarino
93
2ms
58 mins ago
Divisors
kasarino
85
2ms
58 mins ago
ROT13
jgbaldwinbrown
116
5ms
58 mins ago
Leap Years
kasarino
70
2ms
58 mins ago
Prime Numbers
kasarino
80
2ms
59 mins ago
Pascal’s Triangle
kasarino
98
2ms
59 mins ago
ASCII Table
kasarino
198
2ms
60 mins ago
Binary Lambda Calculus
AstroOrbis
1,827
135ms
61 mins ago
Intersection
kasarino
541
43ms
62 mins ago
ISBN
matricronia
128
2ms
63 mins ago
Tutorial
JOrE20
74
43ms
65 mins ago
Tic-tac-toe
SectorCorruptor
176
14ms
69 mins ago
Prime Numbers (Long)
JOrE20
58
289ms
73 mins ago
Binary Lambda Calculus
AstroOrbis
808
12ms
74 mins ago
Prime Numbers (Long)
Matter1024
121
400ms
74 mins ago
Evil Numbers
Andrey2001
104
39ms
79 mins ago
Seven Segment
JOrE20
179
441ms
81 mins ago
Seven Segment
JOrE20
172
10ms
82 mins ago
Seven Segment
JOrE20
189
222ms
83 mins ago
Seven Segment
JOrE20
179
9ms
83 mins ago
Factorial Factorisation
Andrey2001
869
66ms
90 mins ago
Multitap Input
kg583
232
80ms
91 mins ago
Prime Numbers (Long)
JOrE20
41
58ms
92 mins ago
λ
Andrey2001
1,017
6ms
95 mins ago
λ
Andrey2001
1,014
7ms
95 mins ago
Pascal’s Triangle
Andrey2001
1,019
26ms
97 mins ago
Foo Fizz Buzz Bar
Thinkr1
96
35ms
99 mins ago
Look and Say
Andrey2001
1,338
2ms
100 mins ago
Rijndael S-box
Andrey2001
895
225ms
101 mins ago
Diamonds
Andrey2001
1,109
1,255ms
104 mins ago
Multitap Input
SuperFola
406
63ms
104 mins ago
Diamonds
Andrey2001
1,109
34ms
104 mins ago
π
Andrey2001
1,013
3ms
106 mins ago
Card Number Validation
plcc0
19
78ms
116 mins ago
Tutorial
SuperFola
99
41ms
116 mins ago
Prime Numbers (Long)
zgialor-lab
73
11ms
2 hours ago
Prime Numbers (Long)
zgialor-lab
66
165ms
2 hours ago
Prime Numbers (Long)
JOrE20
5,964
3ms
2 hours ago
Prime Numbers (Long)
JOrE20
5,949
4ms
2 hours ago
Multitap Input
Natanaelel
🥉
62
4ms
2 hours ago
Leap Years
zgialor-lab
53
10ms
2 hours ago
Prime Numbers (Long)
voytxt
5,970
113ms
2 hours ago
Prime Numbers (Long)
blaztoma
93
123ms
2 hours ago
Game of Life
Andrey2001
353
21ms
2 hours ago
Multitap Input
Andrey2001
266
11ms
3 hours ago
Leap Years
kasarino
72
42ms
3 hours ago
𝑒
prestosilver
141
189ms
3 hours ago
Zeckendorf Representation
prestosilver
161
353ms
3 hours ago
Spelling Numbers
prestosilver
🥉
400
394ms
3 hours ago
Polyominoes
prestosilver
🥈
417
1,173ms
3 hours ago
Calendar
prestosilver
🥈
257
362ms
3 hours ago
12 Days of Christmas
prestosilver
🥉
467
336ms
3 hours ago
Christmas Trees
prestosilver
109
356ms
3 hours ago
Prime Numbers (Long)
bitsandbeyond
94
154ms
4 hours ago
Fibonacci
msbranicky
38
365ms
4 hours ago
Fibonacci
msbranicky
46
76ms
4 hours ago
Emirp Numbers
denkyuu1
78
41ms
4 hours ago
Fibonacci
msbranicky
54
2,168ms
4 hours ago
Prime Numbers
namelessiw
74
4ms
4 hours ago
Mandelbrot
primo-ppcg
🥇
130
63ms
4 hours ago
Fibonacci
msbranicky
38
11ms
4 hours ago
Multitap Input
prestosilver
140
3ms
4 hours ago
Multitap Input
nstearns96
310
18ms
4 hours ago
Evil Numbers
denkyuu1
34
34ms
5 hours ago
Pernicious Numbers
bpharaldsson
153
410ms
5 hours ago
Prime Numbers (Long)
Andrey2001
217
117ms
5 hours ago
Pangram Grep
denkyuu1
53
36ms
5 hours ago