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
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
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
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Topological Sort
Trinomial Triangle
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
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
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
Groovy
Harbour
Hare
Haxe
Hush
Hy
iogii
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
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
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
Transpose Sentence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Apéry’s Constant
Calendar
Connect Four
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Snake
Sphenic Numbers
Topological Sort
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
DFA Simulator
edsrzf
🥈
179
9 hours ago
ISBN
edsrzf
🥈
95
31 hours ago
Topological Sort
albanian-laundromat
221
36 hours ago
Pernicious Numbers (Long)
kevinnaviapaiva
268
2 days ago
Pernicious Numbers
kevinnaviapaiva
265
2 days ago
Emirp Numbers (Long)
kevinnaviapaiva
296
2 days ago
Emirp Numbers
kevinnaviapaiva
295
2 days ago
Niven Numbers (Long)
kevinnaviapaiva
147
2 days ago
Niven Numbers
kevinnaviapaiva
145
2 days ago
Ordinal Numbers
edsrzf
81
2 days ago
Sphenic Numbers
HumanoidCPU
8,868
2 days ago
N Queens
edsrzf
💎
122
3 days ago
Day of Week
GrayJoKing
🥇
93
3 days ago
Tutorial
kTheLemon
70
4 days ago
Happy Numbers (Long)
edsrzf
96
5 days ago
Proximity Grid
edsrzf
💎
179
5 days ago
Day of Week
edsrzf
🥇
93
5 days ago
Niven Numbers
edsrzf
48
5 days ago
Game of Life
edsrzf
128
5 days ago
Quine
BREMAUCY
🥇
45
6 days ago
Card Number Validation
edsrzf
🥈
90
6 days ago
Abundant Numbers (Long)
morrtensen-v16
92
6 days ago
Abundant Numbers
morrtensen-v16
91
6 days ago
Minesweeper
edsrzf
150
6 days ago
Rijndael S-box
ifneq
776
6 days ago
Catalan’s Constant
ifneq
1,009
6 days ago
Kolakoski Constant
ifneq
1,009
6 days ago
ln 2
ifneq
1,009
6 days ago
𝑒
ifneq
1,009
6 days ago
√2
ifneq
1,009
6 days ago
φ
ifneq
1,009
6 days ago
τ
ifneq
1,009
6 days ago
λ
ifneq
1,009
6 days ago
γ
ifneq
1,009
6 days ago
π
ifneq
1,009
6 days ago
Tutorial
Upload-and-View
79
7 days ago
Mandelbrot
Upload-and-View
284
7 days ago
ROT13
Upload-and-View
119
7 days ago
Tongue-twisters
CaedenHarper
531
7 days ago
Quine
Upload-and-View
🥇
45
7 days ago
PalindromemordnilaP
Upload-and-View
119
7 days ago
Prime Numbers (Long)
kevinnaviapaiva
144
8 days ago
Prime Numbers
kevinnaviapaiva
142
8 days ago
Leap Years
kevinnaviapaiva
130
8 days ago
brainfuck
Upload-and-View
719
8 days ago
Foo Fizz Buzz Bar
Upload-and-View
179
8 days ago
ISBN
kevinnaviapaiva
234
8 days ago
Christmas Trees
kevinnaviapaiva
215
8 days ago
Fibonacci
kevinnaviapaiva
59
8 days ago
Diamonds
kevinnaviapaiva
296
8 days ago
Foo Fizz Buzz Bar
kevinnaviapaiva
313
8 days ago
Odious Numbers (Long)
kevinnaviapaiva
148
8 days ago
Odious Numbers
kevinnaviapaiva
146
8 days ago
Evil Numbers (Long)
kevinnaviapaiva
148
8 days ago
Evil Numbers
kevinnaviapaiva
146
8 days ago
Divisors
kevinnaviapaiva
111
8 days ago
Ascending Primes
kevinnaviapaiva
346
8 days ago
Arithmetic Numbers
kevinnaviapaiva
145
8 days ago
Abundant Numbers (Long)
kevinnaviapaiva
118
8 days ago
Abundant Numbers
kevinnaviapaiva
117
8 days ago
Arabic to Roman
GrayJoKing
170
8 days ago
Scrambled Sort
GrayJoKing
🥈
191
8 days ago
Pernicious Numbers
edsrzf
🥇
41
9 days ago
Look and Say
gigaprofisi
233
9 days ago
Ascending Primes
GrayJoKing
🥉
113
9 days ago
Mandelbrot
DialFrost
🥇
130
10 days ago
√2
sean-niemann
🥇
111
11 days ago
φ
sean-niemann
🥇
108
11 days ago
SI Units
MeWhenI
720
12 days ago
Ten-pin Bowling
edsrzf
💎
187
13 days ago
𝑒
sean-niemann
🥇
88
13 days ago
Kolakoski Sequence
dokutan
81
13 days ago
Sphenic Numbers
dokutan
100
13 days ago
Kolakoski Constant
sean-niemann
152
13 days ago
Van Eck Sequence
sean-niemann
🥇
53
15 days ago