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
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
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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 Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Snake
Sphenic Numbers
Star Wars GPT
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
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
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
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
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
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 Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Hilbert Curve
Mandelbrot
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
QR Encoder
Quadratic Formula
Scrambled Alphabetization
Semiprime Numbers
Snake
Sphenic Numbers
Star Wars GPT
Trinomial Triangle
Turtle
Tutorial
Hole
Golfer
Chars
Submitted
Tutorial
retrohun
168
3 days ago
Farey Sequence
dokutan
123
4 days ago
Partition Numbers
dokutan
122
5 days ago
ROT13
plcc0
45
5 days ago
Fibonacci
plcc0
45
5 days ago
Tongue-twisters
plcc0
346
6 days ago
Quine
mousetail
48
6 days ago
Prime Numbers
xsot
46
6 days ago
Prime Numbers (Long)
xsot
47
6 days ago
𝑒
fischfood
791
8 days ago
λ
ehulinsky
1,009
9 days ago
Prime Numbers
KasperKivimaeki
49
9 days ago
Polyominoes
dokutan
977
9 days ago
Tongue-twisters
dokutan
341
9 days ago
Gijswijt’s Sequence
dokutan
164
9 days ago
Prime Numbers (Long)
KasperKivimaeki
51
9 days ago
Minesweeper
targrik
171
9 days ago
Time Distance
edsrzf
264
12 days ago
Quine
dokutan
54
13 days ago
N Queens
targrik
273
16 days ago
Reversi
targrik
247
16 days ago
Arrows
sean-niemann
🥉
90
17 days ago
Arrows
targrik
127
17 days ago
99 Bottles of Beer
targrik
235
17 days ago
Game of Life
targrik
151
18 days ago
Arithmetic Numbers
targrik
76
19 days ago
τ
sean-niemann
🥈
96
21 days ago
π
sean-niemann
🥉
96
21 days ago
Gijswijt’s Sequence
targrik
141
21 days ago
π
Mabeloid
1,008
21 days ago
Billiards
targrik
🥉
161
21 days ago
Ordinal Numbers
targrik
77
22 days ago
Kolakoski Sequence
targrik
64
22 days ago
Niven Numbers (Long)
targrik
54
22 days ago
Niven Numbers
targrik
43
22 days ago
Fizz Buzz
MeWhenI
🥇
56
22 days ago
Pascal’s Triangle
xsot
🥇
52
23 days ago
Leap Years
albanian-laundromat
62
24 days ago
Fractions
kevinnaviapaiva
204
25 days ago
Seven Segment
DialFrost
125
26 days ago
Partition Numbers
pardouin
🥈
62
27 days ago
Partition Numbers
xsot
💎
57
27 days ago
Smith Numbers
MeWhenI
123
27 days ago
Game of Life
edsrzf
121
7 Mar 2025
Pernicious Numbers (Long)
kevinnaviapaiva
247
7 Mar 2025
Pernicious Numbers
kevinnaviapaiva
244
7 Mar 2025
Factorial Factorisation
kevinnaviapaiva
293
6 Mar 2025
Partition Numbers
KatieLG
751
6 Mar 2025
Partition Numbers
ovs-code
🥉
64
6 Mar 2025
Quine
kevinnaviapaiva
64
6 Mar 2025
Niven Numbers (Long)
kevinnaviapaiva
167
6 Mar 2025
Niven Numbers
kevinnaviapaiva
165
6 Mar 2025
Diamonds
kevinnaviapaiva
280
6 Mar 2025
Ascending Primes
kevinnaviapaiva
354
6 Mar 2025
𝑒
gigaprofisi
1,021
6 Mar 2025
Arabic to Roman
kevinnaviapaiva
311
6 Mar 2025
Prime Numbers (Long)
kevinnaviapaiva
155
6 Mar 2025
Prime Numbers
kevinnaviapaiva
153
6 Mar 2025
Evil Numbers (Long)
kevinnaviapaiva
165
6 Mar 2025
Evil Numbers
kevinnaviapaiva
163
6 Mar 2025
Odious Numbers (Long)
kevinnaviapaiva
165
6 Mar 2025
Odious Numbers
kevinnaviapaiva
163
6 Mar 2025
Emirp Numbers (Long)
kevinnaviapaiva
295
6 Mar 2025
Emirp Numbers
kevinnaviapaiva
294
6 Mar 2025
Collatz
kevinnaviapaiva
157
6 Mar 2025
ASCII Table
edsrzf
121
5 Mar 2025
Partition Numbers
emplv
68
5 Mar 2025
Leap Years
kevinnaviapaiva
140
5 Mar 2025
Partition Numbers
rucin93
68
5 Mar 2025
ISBN
rollershutter
139
5 Mar 2025
Fractions
xsot
🥇
67
5 Mar 2025
Semiprime Numbers
HumanoidCPU
12,794
4 Mar 2025
Fizz Buzz
gigaprofisi
121
3 Mar 2025
Ascending Primes
targrik
374
3 Mar 2025
Partition Numbers
targrik
602
3 Mar 2025