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
><>
ALGOL 68
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
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
><>
ALGOL 68
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
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
τ
Lv0Sys
46
193ms
37 hours ago
Emirp Numbers
Lv0Sys
85
466ms
40 hours ago
Leyland Numbers
denkyuu1
84
521ms
3 days ago
Pernicious Numbers
denkyuu1
44
314ms
3 days ago
Pangram Grep
denkyuu1
54
305ms
3 days ago
Van Eck Sequence
JOrE20
2,563
184ms
3 days ago
φ
JOrE20
🥇
37
188ms
3 days ago
𝑒
JOrE20
🥇
31
181ms
3 days ago
√2
JOrE20
🥇
36
1,948ms
3 days ago
τ
JOrE20
🥇
40
1,965ms
3 days ago
π
JOrE20
🥇
31
199ms
3 days ago
γ
JOrE20
🥇
42
220ms
3 days ago
ln 2
JOrE20
🥇
40
1,991ms
3 days ago
Catalan’s Constant
JOrE20
🥇
46
221ms
3 days ago
ROT13
denkyuu1
83
4,742ms
3 days ago
Prime Numbers
denkyuu1
44
324ms
3 days ago
Catalan Numbers
denkyuu1
47
239ms
5 days ago
Leap Years
denkyuu1
43
310ms
5 days ago
Farey Sequence
denkyuu1
83
630ms
5 days ago
Divisors
denkyuu1
51
242ms
5 days ago
Odious Numbers
denkyuu1
49
281ms
5 days ago
Pascal’s Triangle
denkyuu1
46
254ms
5 days ago
Niven Numbers
denkyuu1
43
279ms
5 days ago
Fractions
denkyuu1
96
198ms
5 days ago
Christmas Trees
dokutan
65
291ms
6 days ago
Musical Chords
JayXon
🥇
87
338ms
10 days ago
Pernicious Numbers (Long)
Daniel-Ellison
63
372ms
10 days ago
Calendar
dokutan
🥈
879
208ms
11 days ago
Niven Numbers (Long)
JOrE20
47
317ms
17 days ago
Niven Numbers
JOrE20
45
315ms
17 days ago
Arrows
dokutan
132
271ms
17 days ago
United States
JayXon
💎
101
300ms
17 days ago
Tutorial
FortuiteMan
135
265ms
18 days ago
Seven Segment
JOrE20
189
226ms
19 days ago
ROT13
dokutan
1,018
374ms
20 days ago
Multitap Input
dokutan
🥉
387
236ms
20 days ago
Quine
JOrE20
47
157ms
23 days ago
Kolakoski Constant
JOrE20
1,011
148ms
24 days ago
Fibonacci
Andrey2001
51
205ms
24 days ago
Multitap Input
antimon2
💎
79
367ms
24 days ago
Tongue-twisters
JOrE20
358
326ms
25 days ago
Kaprekar Numbers
blaztoma
74
743ms
27 days ago
π
Andrey2001
1,011
167ms
27 days ago
Fizz Buzz
vhoulbreque
93
192ms
24 Jan 2026
Sudoku
ovs-code
💎
283
3,686ms
24 Jan 2026
Trinomial Triangle
antimon2
🥇
59
579ms
22 Jan 2026
Set
error256
🥇
89
702ms
20 Jan 2026
Tower of Hanoi
antimon2
🥇
45
301ms
19 Jan 2026
Zodiac Signs
antimon2
110
512ms
19 Jan 2026
Arithmetic Numbers
blaztoma
🥇
47
809ms
17 Jan 2026
United States
antimon2
143
351ms
16 Jan 2026
Tutorial
Mefred
135
289ms
15 Jan 2026
Mandelbrot
JayXon
💎
83
820ms
14 Jan 2026
Gray Code Decoder
error256
49
312ms
14 Jan 2026
Mandelbrot
error256
97
736ms
13 Jan 2026
Mandelbrot
antimon2
🥈
84
730ms
13 Jan 2026
Fibonacci
bitsandbeyond
52
192ms
11 Jan 2026
Fibonacci
CornerMercury
56
155ms
11 Jan 2026
Fibonacci
Emutis
64
183ms
11 Jan 2026
Prime Numbers (Long)
blaztoma
45
629ms
11 Jan 2026
Fibonacci
KasperKivimaeki
51
181ms
10 Jan 2026
Trinomial Triangle
KatieLG-Transpiler
2,146
156ms
9 Jan 2026
Tower of Hanoi
KatieLG-Transpiler
4,147
154ms
9 Jan 2026
Tic-tac-toe
KatieLG-Transpiler
25,091
1,210ms
9 Jan 2026
Taxicab Numbers
KatieLG-Transpiler
4,704
149ms
9 Jan 2026
Sphenic Numbers
KatieLG-Transpiler
10,719
165ms
9 Jan 2026
Semiprime Numbers
KatieLG-Transpiler
15,473
153ms
9 Jan 2026
Polygon Triangulations
KatieLG-Transpiler
4,567
134ms
9 Jan 2026
Partition Numbers
KatieLG-Transpiler
806
149ms
9 Jan 2026
Odd Polyomino Tiling
KatieLG-Transpiler
21,697
159ms
9 Jan 2026
Mandelbrot
KatieLG-Transpiler
10,104
152ms
9 Jan 2026
Kaprekar Numbers
KatieLG-Transpiler
567
153ms
9 Jan 2026
Hilbert Curve
KatieLG-Transpiler
5,209
164ms
9 Jan 2026
Highly Composite Numbers
KatieLG-Transpiler
512
159ms
9 Jan 2026
Hexagonal Spiral
KatieLG-Transpiler
1,429
175ms
9 Jan 2026
Floyd-Steinberg Dithering
KatieLG-Transpiler
67,171
187ms
9 Jan 2026
Flags
KatieLG-Transpiler
6,584
354ms
9 Jan 2026
CSS Colors (Inverse)
KatieLG-Transpiler
3,515
288ms
9 Jan 2026
Billiards
KatieLG-Transpiler
15,308
277ms
9 Jan 2026
Apéry’s Constant
KatieLG-Transpiler
1,059
160ms
9 Jan 2026