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
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
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
Calendar
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
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
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
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
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
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
Calendar
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
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
Lucky Tickets
sisyphus-ppcg
89
376ms
5 mins ago
ASCII Table
edsrzf
🥇
132
92ms
6 mins ago
Lucky Tickets
sisyphus-ppcg
💎
58
57ms
9 mins ago
Game of Life
GrayJoKing
🥉
120
22ms
16 mins ago
Lucky Tickets
canissimia
💎
70
13ms
21 mins ago
Game of Life
GrayJoKing
🥇
77
235ms
26 mins ago
Kaprekar Numbers
ryyyn
123
4,425ms
34 mins ago
Prime Numbers (Long)
albanian-laundromat
113
196ms
35 mins ago
Billiards
bricknellj
176
11ms
46 mins ago
Taxicab Numbers
saito-ta
78
970ms
52 mins ago
Pernicious Numbers
ethanlally
72
337ms
70 mins ago
Maze
albanian-laundromat
🥈
264
29ms
72 mins ago
ln 2
edsrzf
💎
65
46ms
75 mins ago
Vampire Numbers
snoozingnewt
632
67ms
86 mins ago
Star Wars Opening Crawl
albanian-laundromat
🥈
496
103ms
88 mins ago
Abundant Numbers (Long)
09cf
🥇
82
838ms
88 mins ago
Emirp Numbers
snoozingnewt
73
67ms
89 mins ago
Gray Code Decoder
AlephSquirrel
42
6ms
94 mins ago
Gray Code Decoder
AlephSquirrel
76
356ms
99 mins ago
Gray Code Decoder
AlephSquirrel
31
9ms
101 mins ago
99 Bottles of Beer
albanian-laundromat
349
246ms
119 mins ago
Gray Code Decoder
AlephSquirrel
76
17ms
2 hours ago
12 Days of Christmas
albanian-laundromat
523
242ms
2 hours ago
Topological Sort
sean-niemann
301
446ms
2 hours ago
ln 2
edsrzf
🥈
69
135ms
2 hours ago
Pangram Grep
AlephSquirrel
93
2ms
2 hours ago
Prime Numbers (Long)
albanian-laundromat
114
308ms
2 hours ago
Lucky Numbers
sean-niemann
🥉
56
75ms
2 hours ago
Prime Numbers
albanian-laundromat
112
239ms
2 hours ago
Partition Numbers
jkelly467
147
2,178ms
2 hours ago
Scrambled Sort
albanian-laundromat
288
240ms
3 hours ago
Foo Fizz Buzz Bar
albanian-laundromat
175
244ms
3 hours ago
Fizz Buzz
albanian-laundromat
136
241ms
3 hours ago
Christmas Trees
albanian-laundromat
144
240ms
3 hours ago
Lucky Numbers
sean-niemann
51
52ms
3 hours ago
Lucky Numbers
sean-niemann
57
784ms
3 hours ago
Leap Years
DialFrost
🥇
64
93ms
3 hours ago
Topological Sort
IISResetMe
362
1,090ms
3 hours ago
Maze
albanian-laundromat
204
297ms
3 hours ago
Minesweeper
rhdqor213
💎
122
12ms
3 hours ago
Hexdump
DialFrost
🥈
240
104ms
3 hours ago
Tower of Hanoi
arcpolaris
74
358ms
3 hours ago
Card Number Validation
albanian-laundromat
148
240ms
3 hours ago
Taxicab Numbers
saito-ta
75
519ms
3 hours ago
Tower of Hanoi
lyphyser
🥈
51
52ms
4 hours ago
Gijswijt’s Sequence
DialFrost
🥈
145
100ms
4 hours ago
Evil Numbers (Long)
albanian-laundromat
85
246ms
4 hours ago
Evil Numbers
albanian-laundromat
84
243ms
4 hours ago
Odious Numbers
albanian-laundromat
84
239ms
4 hours ago
Odious Numbers (Long)
albanian-laundromat
85
239ms
4 hours ago
Lucky Numbers
sean-niemann
128
247ms
4 hours ago
Lucky Numbers
sean-niemann
99
362ms
4 hours ago
Lucky Numbers
sean-niemann
103
327ms
4 hours ago
Leyland Numbers
DialFrost
🥇
120
95ms
4 hours ago
N Queens
dokutan
674
3ms
4 hours ago
Collatz
albanian-laundromat
113
233ms
4 hours ago
Lucky Numbers
sean-niemann
74
1,004ms
4 hours ago
Tongue-twisters
dokutan
314
707ms
4 hours ago
12 Days of Christmas
dokutan
465
726ms
4 hours ago
Billiards
bizy-coder
163
10ms
4 hours ago
Lucky Numbers
sean-niemann
🥈
77
101ms
4 hours ago
12 Days of Christmas
dokutan
434
3ms
4 hours ago
Taxicab Numbers
2bular
21
886ms
4 hours ago
Lucky Numbers
sean-niemann
81
3ms
4 hours ago
Abundant Numbers
bizy-coder
61
9ms
4 hours ago
Tongue-twisters
dokutan
🥉
284
3ms
4 hours ago
Lucky Numbers
sean-niemann
🥉
98
389ms
4 hours ago
Lucky Numbers
sean-niemann
106
57ms
5 hours ago
Van Eck Sequence
dokutan
1,314
3ms
5 hours ago
Vampire Numbers
dokutan
679
3ms
5 hours ago
Trinomial Triangle
dokutan
1,162
3ms
5 hours ago
Tower of Hanoi
dokutan
166
4ms
5 hours ago
Smith Numbers
dokutan
1,170
3ms
5 hours ago
Sierpiński Triangle
dokutan
164
3ms
5 hours ago
Rule 110
dokutan
1,258
3ms
5 hours ago