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
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
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
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
Lily
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
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
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
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
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
λ
stefangimmillaro
🥉
595
250ms
5 hours ago
γ
stefangimmillaro
🥈
593
261ms
5 hours ago
Levenshtein Distance
tomh1012
317
115ms
3 days ago
CSS Colors
dokutan
2,508
2,216ms
4 days ago
ROT13
dokutan
565
783ms
4 days ago
Rock-paper-scissors-Spock-lizard
dokutan
578
697ms
4 days ago
United States
dokutan
696
737ms
4 days ago
Morse Encoder
dokutan
554
680ms
4 days ago
Morse Decoder
dokutan
483
669ms
4 days ago
Multitap Input
dokutan
🥈
334
671ms
4 days ago
Tutorial
FortuiteMan
160
85ms
4 days ago
Multitap Input
stefangimmillaro
💎
142
1,948ms
5 days ago
τ
JOrE20
1,011
64ms
6 days ago
Ten-pin Bowling
blaztoma
🥉
211
160ms
8 days ago
Kolakoski Constant
JOrE20
1,011
69ms
10 days ago
Levenshtein Distance
kmathis22
333
673ms
10 days ago
Diamonds
JayXon
💎
101
105ms
10 days ago
Diamonds
sean-niemann
🥈
102
105ms
10 days ago
Recamán
sean-niemann
🥇
73
92ms
11 days ago
Arrows
sean-niemann
141
307ms
11 days ago
π
Andrey2001
1,011
75ms
13 days ago
Prime Numbers
DialFrost
54
89ms
15 days ago
Prime Numbers (Long)
DialFrost
🥉
56
595ms
15 days ago
Levenshtein Distance
DialFrost
226
105ms
15 days ago
Abundant Numbers
DialFrost
66
95ms
15 days ago
Abundant Numbers (Long)
DialFrost
🥇
67
136ms
15 days ago
Topological Sort
albanian-laundromat
💎
194
1,288ms
15 days ago
N Queens
edsrzf
💎
147
99ms
16 days ago
Star Wars Opening Crawl
KatieLG
5,520
91ms
19 days ago
SI Units
blaztoma
🥈
618
197ms
19 days ago
United States
HumanoidCPU
1,148
135ms
20 days ago
Maze
KatieLG
265
187ms
21 days ago
Cubes
KatieLG
296
99ms
21 days ago
Emirp Numbers (Long)
JayXon
💎
98
123ms
21 days ago
Leyland Numbers
sean-niemann
🥈
128
197ms
22 days ago
Tutorial
Mefred
160
89ms
23 days ago
Zodiac Signs
dokutan
908
698ms
26 days ago
Proximity Grid
stefangimmillaro
🥈
220
162ms
26 days ago
Sierpiński Triangle
stefangimmillaro
82
102ms
10 Jan 2026
Sierpiński Triangle
sean-niemann
🥈
73
88ms
9 Jan 2026
Trinomial Triangle
KatieLG-Transpiler
2,112
657ms
9 Jan 2026
Tower of Hanoi
KatieLG-Transpiler
4,113
649ms
9 Jan 2026
Tic-tac-toe
KatieLG-Transpiler
21,415
829ms
9 Jan 2026
Taxicab Numbers
KatieLG-Transpiler
4,670
633ms
9 Jan 2026
Sphenic Numbers
KatieLG-Transpiler
10,685
621ms
9 Jan 2026
Semiprime Numbers
KatieLG-Transpiler
15,439
631ms
9 Jan 2026
Polygon Triangulations
KatieLG-Transpiler
4,533
668ms
9 Jan 2026
Partition Numbers
KatieLG-Transpiler
772
649ms
9 Jan 2026
Odd Polyomino Tiling
KatieLG-Transpiler
21,663
663ms
9 Jan 2026
Mandelbrot
KatieLG-Transpiler
10,070
645ms
9 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
533
636ms
9 Jan 2026
Hilbert Curve
KatieLG-Transpiler
5,175
633ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
478
614ms
9 Jan 2026
Hexagonal Spiral
KatieLG-Transpiler
1,395
631ms
9 Jan 2026
Floyd-Steinberg Dithering
KatieLG-Transpiler
67,303
663ms
9 Jan 2026
Flags
KatieLG-Transpiler
6,740
767ms
9 Jan 2026
CSS Colors (Inverse)
KatieLG-Transpiler
3,671
704ms
9 Jan 2026
Billiards
KatieLG-Transpiler
14,808
714ms
9 Jan 2026
Apéry’s Constant
KatieLG-Transpiler
1,029
676ms
9 Jan 2026
Calendar
stefangimmillaro
💎
322
141ms
8 Jan 2026
Quine
CornerMercury
64
85ms
7 Jan 2026
Catalan’s Constant
JOrE20
1,011
68ms
6 Jan 2026
Tongue-twisters
sean-niemann
🥉
333
122ms
5 Jan 2026
ASCII Table
blaztoma
165
225ms
5 Jan 2026
√2
JOrE20
1,011
66ms
4 Jan 2026
φ
JOrE20
1,011
67ms
4 Jan 2026
ln 2
JOrE20
1,011
69ms
4 Jan 2026
Maze
blaztoma
🥉
165
1,608ms
1 Jan 2026
Calendar
mwarvik
🥈
377
680ms
1 Jan 2026
Proximity Grid
blaztoma
💎
219
151ms
31 Dec 2025
99 Bottles of Beer
Arkadios200
489
92ms
31 Dec 2025
Trinomial Triangle
edsrzf
🥈
95
87ms
31 Dec 2025
12 Days of Christmas
Arkadios200
519
109ms
31 Dec 2025
Pernicious Numbers (Long)
snoozingnewt
59
101ms
30 Dec 2025
Abundant Numbers (Long)
snoozingnewt
🥇
67
140ms
30 Dec 2025
Game of Life
blaztoma
193
149ms
29 Dec 2025
Sudoku (Fill-in)
blaztoma
💎
262
156ms
29 Dec 2025
Arrows
BREMAUCY
262
94ms
29 Dec 2025
SI Units
edsrzf
💎
610
405ms
29 Dec 2025
Fractions
MeWhenI
🥈
129
107ms
29 Dec 2025