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
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
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
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
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Tower of Hanoi
Steffan153
🥇
84
59ms
6 hours ago
Collatz
vyx77
110
60ms
10 hours ago
Fibonacci
TJK-S
176
1,377ms
11 hours ago
Divisors
TJK-S
138
1,327ms
11 hours ago
Evil Numbers (Long)
damagegithub
76
54ms
16 hours ago
Billiards
KasperKivimaeki
🥈
178
417ms
29 hours ago
Continued Fractions
pardouin
🥉
148
446ms
2 days ago
Billiards
pardouin
🥉
185
404ms
2 days ago
Continued Fractions
matejmatik123
233
1,274ms
2 days ago
Fizz Buzz
Maltaran
105
427ms
3 days ago
Fizz Buzz
Nwo5-trg
111
58ms
4 days ago
Evil Numbers
damagegithub
74
56ms
4 days ago
Multitap Input
TheSecondComing123
161
429ms
4 days ago
Niven Numbers
dokutan
73
58ms
4 days ago
Partition Numbers
JOrE20
138
1,308ms
4 days ago
12 Days of Christmas
Maltaran
558
428ms
4 days ago
Diamonds
TheSecondComing123
152
435ms
4 days ago
brainfuck
tomh1012
396
1,384ms
4 days ago
Ascending Primes
JOrE20
401
2,105ms
5 days ago
Abundant Numbers (Long)
IsGlitchy
252
1,569ms
6 days ago
Abundant Numbers
IsGlitchy
253
1,490ms
6 days ago
Kaprekar Numbers
tomh1012
252
2,796ms
6 days ago
Apéry’s Constant
SunnyFishQwQ
1,040
52ms
6 days ago
Tutorial
SunnyFishQwQ
114
57ms
6 days ago
Tower of Hanoi
TheSecondComing123
90
57ms
7 days ago
Evil Numbers
dokutan
76
58ms
7 days ago
Odious Numbers
dokutan
75
62ms
7 days ago
Kaprekar Numbers
JayXon
💎
89
131ms
7 days ago
Tutorial
AlejoRjas
395
2,570ms
7 days ago
Ascending Primes
retrohun
146
3,443ms
8 days ago
Fractions
matejmatik123
160
1,261ms
8 days ago
Happy Numbers (Long)
error256
119
61ms
9 days ago
Collatz
C32ardash
118
1,433ms
10 days ago
Prime Numbers
tomh1012
103
1,406ms
10 days ago
Collatz
Shengxuan-Zhang
108
58ms
10 days ago
Diamonds
Wolf145
480
2,857ms
12 days ago
Recamán
noahdorsch
503
1,492ms
13 days ago
Odious Numbers (Long)
dokutan
78
58ms
15 days ago
Evil Numbers (Long)
dokutan
80
60ms
15 days ago
24 Game
damagegithub
402
87ms
15 days ago
Tic-tac-toe
damagegithub
277
69ms
16 days ago
Transpose Sentence
damagegithub
265
3,071ms
16 days ago
Tutorial
janAkali
395
2,776ms
16 days ago
Seven Segment
noahdorsch
2,156
1,625ms
18 days ago
Abundant Numbers
togetherfrist
101
60ms
18 days ago
Zeckendorf Representation
Steffan153
123
433ms
19 days ago
Foo Fizz Buzz Bar
isym444
284
2,809ms
20 days ago
Hexdump
dokutan
265
2,844ms
20 days ago
Card Number Validation
dokutan
155
423ms
20 days ago
π
pardouin
163
65ms
21 days ago
Pernicious Numbers
emgordon154
🥇
67
59ms
22 days ago
Smith Numbers
emgordon154
161
128ms
22 days ago
Collatz
dokutan
96
58ms
22 days ago
Partition Numbers
sean-niemann
97
55ms
22 days ago
Transpose Sentence
emgordon154
152
61ms
22 days ago
Minesweeper
emgordon154
🥉
182
70ms
23 days ago
Multitap Input
emgordon154
🥉
150
61ms
23 days ago
Partition Numbers
emgordon154
112
55ms
23 days ago
Abundant Numbers
emgordon154
94
59ms
23 days ago
Card Number Validation
emgordon154
129
59ms
23 days ago
Zeckendorf Representation
emgordon154
158
62ms
23 days ago
Niven Numbers (Long)
emgordon154
95
55ms
23 days ago
Collatz
emgordon154
97
57ms
23 days ago
Number Spiral
emgordon154
169
69ms
23 days ago
Kolakoski Sequence
emgordon154
88
54ms
23 days ago
Farey Sequence
emgordon154
104
53ms
23 days ago
Abundant Numbers (Long)
emgordon154
94
56ms
23 days ago
Arithmetic Numbers
emgordon154
105
128ms
23 days ago
Prime Numbers (Long)
emgordon154
80
99ms
23 days ago
Prime Numbers
emgordon154
78
57ms
23 days ago
Divisors
emgordon154
91
59ms
23 days ago
ASCII Table
emgordon154
170
54ms
23 days ago
12 Days of Christmas
emgordon154
561
64ms
23 days ago
γ
emgordon154
350
677ms
23 days ago
Leap Years
emgordon154
78
56ms
23 days ago
Evil Numbers
emgordon154
74
55ms
23 days ago
Niven Numbers
emgordon154
73
57ms
23 days ago
Odious Numbers
emgordon154
72
53ms
23 days ago
Happy Numbers
emgordon154
103
58ms
23 days ago
Odious Numbers (Long)
emgordon154
73
57ms
23 days ago