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
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
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
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
ALGOL 68
ArkScript
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
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
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
Multitap Input
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
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
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
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Pernicious Numbers
Steffan153
💎
115
1,404ms
36 hours ago
Gijswijt’s Sequence
emgordon154
🥇
208
1,425ms
2 days ago
Fizz Buzz
scpchicken
332
1,408ms
2 days ago
Abundant Numbers
Steffan153
💎
119
1,415ms
5 days ago
Pernicious Numbers (Long)
GolfingSuccess
🥉
145
1,433ms
8 days ago
Musical Chords
emgordon154
💎
348
1,435ms
11 days ago
Multitap Input
albanian-laundromat
329
1,427ms
13 days ago
Topological Sort
albanian-laundromat
💎
306
1,822ms
13 days ago
Christmas Trees
DialFrost
💎
149
1,455ms
14 days ago
Kaprekar Numbers
emgordon154
🥉
182
2,337ms
15 days ago
Alphabetic Numbers
HumanoidCPU
3,936
1,448ms
16 days ago
Zeckendorf Representation
albanian-laundromat
261
1,430ms
16 days ago
Tongue-twisters
prestosilver
565
1,447ms
17 days ago
Fibonacci
error256
🥇
101
1,435ms
18 days ago
Evil Numbers
error256
🥈
111
1,398ms
18 days ago
Continued Fractions
albanian-laundromat
🥈
299
1,446ms
18 days ago
Niven Numbers (Long)
Steffan153
🥇
124
1,442ms
18 days ago
Niven Numbers
Steffan153
🥇
108
1,434ms
18 days ago
Odious Numbers
Steffan153
💎
108
1,436ms
18 days ago
Evil Numbers
Steffan153
💎
107
1,421ms
18 days ago
Fibonacci
Steffan153
🥇
101
1,426ms
18 days ago
Fibonacci
AstroOrbis
130
1,433ms
18 days ago
Calendar
emgordon154
🦄
549
1,465ms
20 days ago
Continued Fractions
emgordon154
💎
283
1,413ms
20 days ago
Hexdump
dokutan
6,336
1,429ms
22 days ago
Day of Week
ovs-code
🥈
336
1,484ms
25 days ago
Happy Numbers
Steffan153
🥇
148
1,470ms
21 Feb 2026
ln 2
JOrE20
1,044
1,490ms
19 Feb 2026
24 Game
rucin93
💎
367
2,296ms
17 Feb 2026
Fibonacci
bpharaldsson
129
1,428ms
17 Feb 2026
Tutorial
janAkali
307
1,967ms
14 Feb 2026
Multitap Input
error256
💎
245
1,516ms
9 Feb 2026
Diamonds
AstroOrbis
333
1,463ms
8 Feb 2026
ISBN
error256
🥈
234
1,492ms
8 Feb 2026
Multitap Input
emgordon154
🥈
251
1,412ms
7 Feb 2026
Gray Code Encoder
voytxt
200
1,494ms
6 Feb 2026
Continued Fractions
voytxt
🥉
309
1,398ms
6 Feb 2026
Prime Numbers
tomh1012
222
1,477ms
3 Feb 2026
Tutorial
FortuiteMan
307
2,044ms
3 Feb 2026
Rijndael S-box
JOrE20
809
1,436ms
2 Feb 2026
π
JOrE20
1,115
1,444ms
1 Feb 2026
τ
JOrE20
1,115
1,444ms
1 Feb 2026
Multitap Input
dokutan
483
1,449ms
1 Feb 2026
Billiards
albanian-laundromat
🥈
366
1,427ms
31 Jan 2026
Multitap Input
voytxt
🥉
318
1,416ms
30 Jan 2026
Kolakoski Constant
JOrE20
1,044
1,421ms
28 Jan 2026
Trinomial Triangle
dokutan
🥉
1,184
1,437ms
26 Jan 2026
Tower of Hanoi
dokutan
264
1,463ms
26 Jan 2026
Rule 110
dokutan
1,236
1,434ms
26 Jan 2026
Rijndael S-box
dokutan
🥈
680
1,487ms
26 Jan 2026
Pascal’s Triangle
dokutan
580
1,455ms
26 Jan 2026
Partition Numbers
dokutan
556
1,432ms
26 Jan 2026
N Queens
dokutan
804
1,459ms
26 Jan 2026
Mandelbrot
dokutan
396
1,486ms
26 Jan 2026
Look and Say
dokutan
452
1,419ms
26 Jan 2026
Leyland Numbers
dokutan
700
1,440ms
26 Jan 2026
Kolakoski Sequence
dokutan
308
1,438ms
26 Jan 2026
Kaprekar Numbers
dokutan
444
1,390ms
26 Jan 2026
Hilbert Curve
dokutan
🥈
540
1,464ms
26 Jan 2026
Hexagonal Spiral
dokutan
344
1,454ms
26 Jan 2026
Farey Sequence
dokutan
2,124
1,415ms
26 Jan 2026
Factorial Factorisation
dokutan
556
1,445ms
26 Jan 2026
Cubes
dokutan
580
1,446ms
26 Jan 2026
Catalan Numbers
dokutan
1,860
1,417ms
26 Jan 2026
24 Game
dokutan
2,584
1,470ms
26 Jan 2026
12 Days of Christmas
dokutan
580
1,466ms
26 Jan 2026
π
Andrey2001
1,044
1,502ms
25 Jan 2026
Fizz Buzz
CaedenHarper
186
1,449ms
25 Jan 2026
Fizz Buzz
DialFrost
💎
150
1,525ms
24 Jan 2026
Tutorial
Mefred
307
1,915ms
15 Jan 2026
Pernicious Numbers (Long)
dokutan
234
1,444ms
15 Jan 2026
Niven Numbers (Long)
dokutan
197
1,486ms
15 Jan 2026
Odious Numbers (Long)
dokutan
193
1,473ms
15 Jan 2026
Evil Numbers (Long)
dokutan
194
1,467ms
15 Jan 2026
Tongue-twisters
dokutan
🥈
412
1,414ms
14 Jan 2026
Diamonds
dokutan
🥉
252
1,456ms
14 Jan 2026
Leyland Numbers
emgordon154
🥈
234
1,499ms
11 Jan 2026
ROT13
GolfingSuccess
💎
224
1,742ms
11 Jan 2026
Leyland Numbers
GolfingSuccess
💎
229
1,435ms
11 Jan 2026
Divisors
GolfingSuccess
💎
123
1,432ms
11 Jan 2026