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
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
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
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
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
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
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
ALGOL 68
APL
ArkScript
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
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
Calendar
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
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
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Continued Fractions
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
Multitap Input
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Tutorial
Mefred
222
29ms
13 hours ago
Kaprekar Numbers
KatieLG
🥉
141
1,009ms
36 hours ago
Trinomial Triangle
KatieLG-Transpiler
2,143
26ms
7 days ago
Tower of Hanoi
KatieLG-Transpiler
5,126
25ms
7 days ago
Taxicab Numbers
KatieLG-Transpiler
5,631
26ms
7 days ago
Sphenic Numbers
KatieLG-Transpiler
14,276
26ms
7 days ago
Semiprime Numbers
KatieLG-Transpiler
20,680
26ms
7 days ago
Polygon Triangulations
KatieLG-Transpiler
4,916
26ms
7 days ago
Partition Numbers
KatieLG-Transpiler
963
27ms
7 days ago
Odd Polyomino Tiling
KatieLG-Transpiler
22,068
26ms
7 days ago
Mandelbrot
KatieLG-Transpiler
10,143
27ms
7 days ago
Kaprekar Numbers
KatieLG-Transpiler
660
26ms
7 days ago
Hilbert Curve
KatieLG-Transpiler
5,230
26ms
7 days ago
Highly Composite Numbers
KatieLG-Transpiler
591
27ms
7 days ago
Hexagonal Spiral
KatieLG-Transpiler
1,256
26ms
7 days ago
Apéry’s Constant
KatieLG-Transpiler
1,022
26ms
7 days ago
Divisors
JOrE20
99
26ms
8 days ago
Pascal’s Triangle
CornerMercury
125
26ms
9 days ago
CSS Colors
m-tkach
💎
237
3,857ms
9 days ago
ASCII Table
blaztoma
197
27ms
10 days ago
τ
JOrE20
1,021
27ms
11 days ago
√2
JOrE20
1,021
25ms
11 days ago
φ
JOrE20
1,021
25ms
11 days ago
99 Bottles of Beer
JOrE20
436
27ms
11 days ago
Calendar
edsrzf
💎
291
63ms
12 days ago
Day of Week
edsrzf
🥇
103
57ms
12 days ago
Christmas Trees
JOrE20
713
25ms
13 days ago
Catalan Numbers
JOrE20
3,187
27ms
13 days ago
12 Days of Christmas
JOrE20
647
26ms
13 days ago
Ascending Primes
JOrE20
827
25ms
13 days ago
24 Game
JOrE20
16,533
24ms
13 days ago
Jacobi Symbol
JOrE20
416
26ms
13 days ago
Niven Numbers
JOrE20
82
26ms
13 days ago
Repeating Decimals
JOrE20
🥉
422
27ms
13 days ago
Game of Life
m-tkach
🥈
160
27ms
14 days ago
Game of Life
edsrzf
💎
154
29ms
15 days ago
Pernicious Numbers (Long)
snoozingnewt
175
27ms
15 days ago
Pascal’s Triangle
JOrE20
157
26ms
15 days ago
Game of Life
blaztoma
192
24ms
15 days ago
Trinomial Triangle
edsrzf
💎
137
26ms
16 days ago
Pascal’s Triangle
edsrzf
115
26ms
16 days ago
Factorial Factorisation
albanian-laundromat
💎
209
28ms
17 days ago
Divisors
albanian-laundromat
99
26ms
18 days ago
Happy Numbers (Long)
albanian-laundromat
149
27ms
18 days ago
Collatz
albanian-laundromat
137
26ms
19 days ago
Number Spiral
blaztoma
266
26ms
19 days ago
Emojify
blaztoma
🥈
369
27ms
20 days ago
Arabic to Roman
JOrE20
350
28ms
20 days ago
PalindromemordnilaP
JOrE20
271
26ms
21 days ago
Hexagonal Spiral
bitsandbeyond
415
26ms
21 days ago
Calendar
JOrE20
🥈
1,000
60ms
21 days ago
𝑒
JOrE20
416
50ms
22 days ago
Factorial Factorisation
JOrE20
🥈
219
27ms
22 days ago
γ
albanian-laundromat
🥈
589
26ms
23 days ago
Musical Chords
blaztoma
🥉
371
27ms
25 days ago
Lucky Tickets
MeWhenI
1,992
79ms
25 days ago
Pernicious Numbers
JOrE20
76
26ms
25 days ago
Tongue-twisters
JOrE20
493
26ms
25 days ago
Abundant Numbers (Long)
JOrE20
119
29ms
25 days ago
Abundant Numbers
JOrE20
118
28ms
25 days ago
Fibonacci
DialFrost
🥇
66
28ms
18 Dec 2025
Happy Numbers (Long)
HumanoidCPU
415
66ms
18 Dec 2025
Tongue-twisters
prestosilver
579
27ms
17 Dec 2025
Emirp Numbers
Mukundan314
116
26ms
17 Dec 2025
Ten-pin Bowling
blaztoma
🥉
397
25ms
16 Dec 2025
United States
Mukundan314
💎
150
96ms
15 Dec 2025
Tutorial
Mukundan314
107
26ms
14 Dec 2025
Odious Numbers
JOrE20
67
25ms
13 Dec 2025
Evil Numbers
JOrE20
66
24ms
13 Dec 2025
Sudoku (Fill-in)
blaztoma
🥈
454
26ms
13 Dec 2025
ASCII Table
dpethes
🥉
190
55ms
12 Dec 2025
Odious Numbers (Long)
dpethes
71
25ms
11 Dec 2025
Odious Numbers
dpethes
69
25ms
11 Dec 2025
Niven Numbers (Long)
snoozingnewt
135
25ms
10 Dec 2025
Evil Numbers (Long)
dpethes
73
25ms
10 Dec 2025
Evil Numbers
dpethes
71
25ms
10 Dec 2025
Tongue-twisters
JayXon
🥈
336
25ms
10 Dec 2025
Levenshtein Distance
primo-ppcg
🥈
266
64ms
9 Dec 2025
Gray Code Decoder
albanian-laundromat
121
78ms
9 Dec 2025
Quine
CornerMercury
🥇
92
24ms
8 Dec 2025