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
Billiards
JOrE20
🥉
1,508
86ms
2 hours ago
Spelling Numbers
dokutan
16,029
272ms
2 hours ago
ROT13
dokutan
1,047
58ms
2 hours ago
Lucky Tickets
dokutan
3,730
71ms
2 hours ago
Emojify
dokutan
🥉
547
59ms
2 hours ago
Tower of Hanoi
dokutan
🥈
91
25ms
2 hours ago
λ
JOrE20
1,021
26ms
3 hours ago
Kolakoski Constant
JOrE20
1,021
25ms
3 hours ago
Leap Years
JOrE20
102
24ms
3 hours ago
Tower of Hanoi
m-tkach
💎
90
25ms
7 hours ago
Tower of Hanoi
KatieLG
5,127
27ms
33 hours ago
Happy Numbers
snoozingnewt
118
26ms
2 days ago
Taxicab Numbers
HumanoidCPU
6,598
87ms
3 days ago
Fizz Buzz
WorseGolfer
128,294
28ms
4 days ago
N Queens
JOrE20
1,377
28ms
4 days ago
Odious Numbers (Long)
JOrE20
71
25ms
5 days ago
Odious Numbers
JOrE20
69
26ms
5 days ago
United States
AidanWalter
3,310
28ms
5 days ago
Fibonacci
Andrey2001
83
25ms
6 days ago
Catalan’s Constant
JOrE20
🥉
1,021
26ms
6 days ago
Mandelbrot
JOrE20
696
31ms
6 days ago
Hilbert Curve
JOrE20
912
30ms
6 days ago
Billiards
albanian-laundromat
🥈
323
60ms
6 days ago
Pernicious Numbers (Long)
dokutan
92
27ms
7 days ago
Pernicious Numbers
dokutan
70
25ms
7 days ago
Pascal’s Triangle
dokutan
122
26ms
7 days ago
Collatz
dokutan
143
26ms
7 days ago
Arithmetic Numbers
dokutan
145
203ms
7 days ago
Abundant Numbers (Long)
dokutan
119
28ms
7 days ago
Abundant Numbers
dokutan
118
26ms
7 days ago
Emirp Numbers
Mukundan314
117
25ms
7 days ago
Tower of Hanoi
albanian-laundromat
103
26ms
7 days ago
Tower of Hanoi
MeWhenI
🥉
92
25ms
7 days ago
United States
aksyristos
3,980
29ms
8 days ago
Fibonacci
solisolu
82
27ms
8 days ago
Zeckendorf Representation
bitsandbeyond
268
56ms
8 days ago
Fizz Buzz
CaedenHarper
164
25ms
9 days ago
Fizz Buzz
JOrE20
164
25ms
9 days ago
Fibonacci
JOrE20
89
26ms
9 days ago
Cubes
JOrE20
3,366
28ms
9 days ago
Evil Numbers (Long)
albanian-laundromat
75
25ms
9 days ago
Evil Numbers (Long)
JOrE20
73
24ms
9 days ago
Evil Numbers
JOrE20
71
24ms
9 days ago
99 Bottles of Beer
JOrE20
458
25ms
9 days ago
United States
scpchicken
2,164
66ms
9 days ago
γ
snoozingnewt
🥉
948
25ms
10 days ago
ln 2
snoozingnewt
🥉
366
32ms
10 days ago
Zodiac Signs
snoozingnewt
341
26ms
10 days ago
United States
Zach1031
1,361
28ms
10 days ago
Pascal’s Triangle
Zach1031
337
26ms
10 days ago
Topological Sort
albanian-laundromat
💎
228
62ms
10 days ago
United States
Babafaba
1,136
30ms
10 days ago
Divisors
albanian-laundromat
104
25ms
11 days ago
Hexagonal Spiral
HumanoidCPU
1,323
26ms
11 days ago
Odd Polyomino Tiling
HumanoidCPU
22,479
34ms
11 days ago
Highly Composite Numbers
HumanoidCPU
710
25ms
11 days ago
Sphenic Numbers
HumanoidCPU
17,873
30ms
11 days ago
Semiprime Numbers
HumanoidCPU
25,927
34ms
11 days ago
Tower of Hanoi
HumanoidCPU
6,145
94ms
11 days ago
Tutorial
JOrE20
107
27ms
13 days ago
ln 2
JOrE20
1,021
25ms
14 days ago
γ
JOrE20
1,021
25ms
14 days ago
United States
JOrE20
1,057
28ms
16 days ago
Fibonacci
Zach1031
128
26ms
16 days ago
Tic-tac-toe
albanian-laundromat
🥈
209
27ms
17 days ago
Prime Numbers (Long)
albanian-laundromat
118
204ms
18 days ago
Minesweeper
albanian-laundromat
🦄
215
27ms
18 days ago
Pascal’s Triangle
albanian-laundromat
143
25ms
18 days ago
Partition Numbers
albanian-laundromat
159
26ms
18 days ago
ISBN
albanian-laundromat
209
54ms
18 days ago
Hexdump
albanian-laundromat
🥉
438
26ms
18 days ago
Trinomial Triangle
albanian-laundromat
🥈
150
25ms
18 days ago
Musical Chords
albanian-laundromat
💎
345
60ms
18 days ago
United States
emgordon154
1,707
30ms
18 days ago
λ
albanian-laundromat
🥉
594
25ms
19 days ago