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
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
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
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
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
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
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
Minesweeper
NFA Simulator
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Submitted
Minesweeper
albanian-laundromat
294
8 hours ago
Game of Life
albanian-laundromat
🥈
279
11 hours ago
Abundant Numbers (Long)
albanian-laundromat
179
11 hours ago
Prime Numbers (Long)
snoozingnewt
522
3 days ago
Prime Numbers
snoozingnewt
520
3 days ago
Trinomial Triangle
dokutan
🥈
2,108
3 days ago
Catalan Numbers
albanian-laundromat
117
5 days ago
Divisors
albanian-laundromat
182
5 days ago
12 Days of Christmas
emgordon154
606
5 days ago
Arrows
emgordon154
🥉
309
5 days ago
DFA Simulator
emgordon154
💎
400
5 days ago
Inventory Sequence
emgordon154
🥉
168
5 days ago
N Queens
emgordon154
🥈
312
5 days ago
QR Decoder
emgordon154
🦄
398
5 days ago
Reverse Polish Notation
emgordon154
414
5 days ago
Scrambled Sort
emgordon154
🥈
410
5 days ago
Spelling Numbers
emgordon154
🥈
621
5 days ago
Van Eck Sequence
emgordon154
244
5 days ago
Rijndael S-box
emgordon154
💎
488
5 days ago
Tutorial
emgordon154
141
5 days ago
Musical Chords
emgordon154
💎
516
7 days ago
Fibonacci
albanian-laundromat
110
7 days ago
Trinomial Triangle
CaedenHarper
🥈
2,108
9 days ago
λ
emgordon154
💎
388
11 days ago
Gijswijt’s Sequence
emgordon154
🥈
211
11 days ago
Rijndael S-box
snoozingnewt
810
14 days ago
Time Distance
emgordon154
🥈
531
15 days ago
Vampire Numbers
emgordon154
🥉
353
22 days ago
United States
emgordon154
💎
294
24 days ago
Tutorial
snoozingnewt
142
25 days ago
Happy Numbers (Long)
albanian-laundromat
211
25 days ago
Niven Numbers
albanian-laundromat
126
26 days ago
Emirp Numbers
albanian-laundromat
🥉
177
27 days ago
Tongue-twisters
albanian-laundromat
521
27 days ago
𝑒
albanian-laundromat
192
27 days ago
Niven Numbers (Long)
albanian-laundromat
169
27 days ago
ln 2
albanian-laundromat
204
27 days ago
τ
albanian-laundromat
207
27 days ago
π
albanian-laundromat
206
27 days ago
Arithmetic Numbers
albanian-laundromat
211
27 days ago
Abundant Numbers
albanian-laundromat
182
27 days ago
√2
albanian-laundromat
195
27 days ago
φ
albanian-laundromat
183
27 days ago
Leap Years
albanian-laundromat
131
27 days ago
Foo Fizz Buzz Bar
albanian-laundromat
223
27 days ago
Fizz Buzz
albanian-laundromat
172
27 days ago
Collatz
albanian-laundromat
158
27 days ago
Prime Numbers (Long)
albanian-laundromat
172
27 days ago
Prime Numbers
albanian-laundromat
112
27 days ago
Hilbert Curve
Babafaba
5,161
8 Sep 2025
Fizz Buzz
snoozingnewt
497
4 Sep 2025
Hilbert Curve
emgordon154
💎
551
3 Sep 2025
Inventory Sequence
blaztoma
565
3 Sep 2025
Hilbert Curve
dokutan
🥈
693
28 Aug 2025
Hilbert Curve
CaedenHarper
🥉
5,159
28 Aug 2025
Sudoku (Fill-in)
albanian-laundromat
🦄
577
26 Aug 2025
Roman to Arabic
CaedenHarper
373
22 Aug 2025
Tutorial
Vexxter9
307
21 Aug 2025
λ
gigaprofisi
1,045
18 Aug 2025
Kaprekar Numbers
DialFrost
💎
150
16 Aug 2025
Mandelbrot
CaedenHarper
10,045
16 Aug 2025
Partition Numbers
CaedenHarper
688
16 Aug 2025
Emirp Numbers
DialFrost
🥈
173
15 Aug 2025
Emirp Numbers (Long)
DialFrost
💎
174
15 Aug 2025
Niven Numbers
GolfingSuccess
121
10 Aug 2025
Topological Sort
Shanethegamer
💎
312
6 Aug 2025
Fizz Buzz
ttomczak3
156
6 Aug 2025
𝑒
InigoK
1,047
6 Aug 2025
Scrambled Sort
albanian-laundromat
🥉
417
4 Aug 2025
Rule 110
emgordon154
253
4 Aug 2025
Sudoku
albanian-laundromat
🦄
1,083
1 Aug 2025
Topological Sort
albanian-laundromat
🥈
340
1 Aug 2025
Sphenic Numbers
HumanoidCPU
8,901
29 Jul 2025
π
Ralac07
1,045
28 Jul 2025
ROT13
error256
🥈
250
27 Jul 2025