Recent Solutions
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
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
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
Tower of Hanoi
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
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
Erlang
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
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
Erlang
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
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
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
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
ln 2
JOrE20
🥉
1,021
26ms
5 hours ago
γ
JOrE20
🥉
1,021
25ms
5 hours ago
United States
JOrE20
1,057
28ms
2 days ago
Fibonacci
Zach1031
128
26ms
2 days ago
Tic-tac-toe
albanian-laundromat
🥈
209
27ms
3 days ago
Prime Numbers (Long)
albanian-laundromat
118
204ms
4 days ago
Minesweeper
albanian-laundromat
🦄
215
27ms
4 days ago
Pascal’s Triangle
albanian-laundromat
143
25ms
4 days ago
Partition Numbers
albanian-laundromat
159
26ms
4 days ago
ISBN
albanian-laundromat
209
54ms
4 days ago
Hexdump
albanian-laundromat
🥉
438
26ms
4 days ago
Trinomial Triangle
albanian-laundromat
🥈
150
25ms
4 days ago
Musical Chords
albanian-laundromat
💎
345
60ms
4 days ago
United States
emgordon154
1,707
30ms
5 days ago
λ
albanian-laundromat
🥉
594
25ms
5 days ago
United States
anter69
🥉
337
26ms
7 days ago
United States
HumanoidCPU
1,387
29ms
7 days ago
Partition Numbers
DialFrost
🥈
130
25ms
9 days ago
Quine
JOrE20
116
26ms
10 days ago
𝑒
JOrE20
1,021
27ms
11 days ago
Pascal’s Triangle
JOrE20
996
27ms
11 days ago
ROT13
HumanoidCPU
220
26ms
11 days ago
Quine
albanian-laundromat
158
26ms
12 days ago
Niven Numbers (Long)
HumanoidCPU
12,843
4,872ms
12 days ago
Arithmetic Numbers
HumanoidCPU
73,911
4,954ms
12 days ago
Pernicious Numbers (Long)
HumanoidCPU
39,677
4,977ms
12 days ago
24 Game
HumanoidCPU
19,255
1,080ms
12 days ago
Rule 110
HumanoidCPU
16,365
32ms
12 days ago
N Queens
HumanoidCPU
1,703
42ms
12 days ago
Lucky Numbers
HumanoidCPU
7,833
3,200ms
12 days ago
Look and Say
HumanoidCPU
1,372
25ms
12 days ago
Inventory Sequence
HumanoidCPU
5,636
3,249ms
12 days ago
Gijswijt’s Sequence
HumanoidCPU
5,013
3,209ms
12 days ago
Diamonds
HumanoidCPU
1,537
31ms
12 days ago
Cubes
HumanoidCPU
4,651
34ms
12 days ago
Catalan Numbers
HumanoidCPU
3,311
33ms
12 days ago
ASCII Table
HumanoidCPU
376
25ms
12 days ago
12 Days of Christmas
HumanoidCPU
2,914
33ms
12 days ago
Polyominoes
HumanoidCPU
8,989
4,396ms
12 days ago
99 Bottles of Beer
HumanoidCPU
13,096
86ms
12 days ago
Mandelbrot
HumanoidCPU
10,222
26ms
12 days ago
Divisors
HumanoidCPU
1,677
34ms
12 days ago
Partition Numbers
HumanoidCPU
960
33ms
12 days ago
Trinomial Triangle
HumanoidCPU
2,178
26ms
12 days ago
Pascal’s Triangle
HumanoidCPU
880
25ms
12 days ago
Rijndael S-box
HumanoidCPU
861
26ms
12 days ago
Christmas Trees
HumanoidCPU
815
27ms
12 days ago
Hilbert Curve
HumanoidCPU
5,291
26ms
12 days ago
Sierpiński Triangle
HumanoidCPU
647
26ms
12 days ago
Vampire Numbers
HumanoidCPU
1,549
45ms
12 days ago
Kaprekar Numbers
HumanoidCPU
657
29ms
12 days ago
Number Spiral
HumanoidCPU
363
26ms
12 days ago
Tongue-twisters
HumanoidCPU
603
25ms
12 days ago
Recamán
HumanoidCPU
1,660
88ms
12 days ago
Game of Life
albanian-laundromat
🥈
180
26ms
13 days ago
United States
Babafaba
1,391
28ms
14 days ago
Card Number Validation
snoozingnewt
249
27ms
14 days ago
ROT13
snoozingnewt
247
27ms
15 days ago
ASCII Table
snoozingnewt
211
55ms
15 days ago
Tower of Hanoi
bitsandbeyond
93
25ms
16 days ago
United States
SB-945
2,398
31ms
16 days ago
Leap Years
retrohun
83
24ms
17 days ago
Fractions
snoozingnewt
251
54ms
17 days ago
Hilbert Curve
snoozingnewt
💎
756
27ms
17 days ago
Set
snoozingnewt
556
27ms
18 days ago
Mandelbrot
snoozingnewt
284
32ms
18 days ago
Tutorial
Openstreetmapler
222
27ms
18 days ago
Tower of Hanoi
albanian-laundromat
141
26ms
18 days ago
Kolakoski Sequence
snoozingnewt
202
26ms
18 days ago
Odious Numbers (Long)
snoozingnewt
100
25ms
23 days ago
Odious Numbers
snoozingnewt
99
24ms
23 days ago
Evil Numbers (Long)
snoozingnewt
96
24ms
23 days ago
Evil Numbers
snoozingnewt
94
25ms
23 days ago
Pascal’s Triangle
Babafaba
148
26ms
24 days ago
Pernicious Numbers
snoozingnewt
70
26ms
26 days ago