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
Arithmetic Numbers
albanian-laundromat
105
4,154ms
28 hours ago
Rock-paper-scissors-Spock-lizard
JayXon
🥇
118
105ms
2 days ago
Rock-paper-scissors-Spock-lizard
Steffan153
🥇
118
109ms
3 days ago
Collatz
madeforlosers
120
420ms
3 days ago
Abundant Numbers
JayXon
🥇
59
74ms
4 days ago
Abundant Numbers
Steffan153
🥇
59
71ms
4 days ago
Pangram Grep
madex
114
79ms
6 days ago
Arrows
madex
242
98ms
6 days ago
Fractions
madex
141
77ms
6 days ago
Pernicious Numbers
GolfingSuccess
53
71ms
7 days ago
Roman to Arabic
Steffan153
🥇
80
472ms
7 days ago
Proximity Grid
JayXon
💎
91
110ms
7 days ago
Proximity Grid
Steffan153
🥈
92
103ms
8 days ago
Proximity Grid
edsrzf
🥈
92
111ms
8 days ago
Game of Life
tomh1012
307
300ms
11 days ago
Binary Lambda Calculus
AstroOrbis
1,754
163ms
13 days ago
Arrows
retrohun
396
131ms
14 days ago
Alphabetic Numbers
HumanoidCPU
3,903
79ms
15 days ago
Continued Fractions
albanian-laundromat
🥈
178
89ms
15 days ago
Continued Fractions
edsrzf
💎
168
87ms
15 days ago
Zeckendorf Representation
albanian-laundromat
🥈
137
157ms
15 days ago
ISBN
Steffan153
🥇
75
77ms
15 days ago
ISBN
JayXon
🥇
75
85ms
16 days ago
Tower of Hanoi
error256
79
89ms
17 days ago
Tower of Hanoi
pardouin
🥇
68
93ms
18 days ago
Tower of Hanoi
Steffan153
🥇
68
88ms
18 days ago
Tower of Hanoi
JayXon
🥇
68
96ms
18 days ago
Niven Numbers (Long)
pardouin
72
123ms
18 days ago
Tower of Hanoi
jkelly467
92
91ms
18 days ago
Tutorial
Natanaelel
79
128ms
18 days ago
Tower of Hanoi
Natanaelel
106
122ms
18 days ago
Tower of Hanoi
tomh1012
120
136ms
18 days ago
Tower of Hanoi
anter69
105
84ms
18 days ago
Tower of Hanoi
AstroOrbis
117
94ms
18 days ago
ASCII Table
Steffan153
💎
89
81ms
20 days ago
Gray Code Decoder
albanian-laundromat
64
547ms
25 days ago
Game of Life
JOrE20
953
158ms
25 days ago
Pangram Grep
JOrE20
204
111ms
25 days ago
Arrows
JOrE20
770
126ms
27 days ago
Multitap Input
error256
🥇
86
89ms
27 days ago
Multitap Input
albanian-laundromat
🥇
86
87ms
27 days ago
Game of Life
Steffan153
🥉
92
131ms
27 days ago
PalindromemordnilaP
Steffan153
🥉
73
78ms
27 days ago
Tutorial
janAkali
137
126ms
14 Feb 2026
Catalan Numbers
Steffan153
🥉
45
103ms
14 Feb 2026
Game of Life
ndren
355
152ms
13 Feb 2026
24 Game
rucin93
💎
125
1,042ms
12 Feb 2026
Day of Week
DialFrost
🥇
67
133ms
12 Feb 2026
24 Game
snoozingnewt
🥈
147
743ms
11 Feb 2026
Fizz Buzz
snoozingnewt
74
91ms
11 Feb 2026
Pangram Grep
snoozingnewt
64
118ms
11 Feb 2026
Multitap Input
evnu
153
94ms
9 Feb 2026
Pangram Grep
tomh1012
119
117ms
6 Feb 2026
Ascending Primes
error256
💎
100
4,835ms
5 Feb 2026
Prime Numbers (Long)
error256
70
221ms
5 Feb 2026
Pangram Grep
albanian-laundromat
67
102ms
5 Feb 2026
Ascending Primes
albanian-laundromat
🥈
101
154ms
5 Feb 2026
United States
JayXon
💎
93
101ms
4 Feb 2026
Tutorial
FortuiteMan
137
121ms
3 Feb 2026
Prime Numbers (Long)
AstroOrbis
278
254ms
2 Feb 2026
Spelling Numbers
dokutan
🥉
560
2,305ms
1 Feb 2026
π
JOrE20
1,011
65ms
1 Feb 2026
Multitap Input
edsrzf
🥇
86
92ms
1 Feb 2026
ROT13
edsrzf
🥉
95
99ms
1 Feb 2026
Prime Numbers
Andrey2001
79
66ms
29 Jan 2026
Christmas Trees
evnu
177
98ms
28 Jan 2026
Kolakoski Constant
JOrE20
1,024
89ms
28 Jan 2026
United States
dokutan
261
117ms
26 Jan 2026
ROT13
dokutan
218
96ms
26 Jan 2026
Rock-paper-scissors-Spock-lizard
dokutan
202
99ms
26 Jan 2026
Partition Numbers
dokutan
181
120ms
26 Jan 2026
Multitap Input
dokutan
154
76ms
26 Jan 2026
Morse Encoder
dokutan
🥉
189
80ms
26 Jan 2026
Morse Decoder
dokutan
182
83ms
26 Jan 2026
Lucky Tickets
dokutan
673
95ms
26 Jan 2026
Game of Life
dokutan
217
123ms
26 Jan 2026
Forsyth–Edwards Notation
dokutan
162
76ms
26 Jan 2026
Emojify
dokutan
158
98ms
26 Jan 2026
Day of Week
dokutan
189
169ms
26 Jan 2026
CSS Colors
dokutan
🥈
977
132ms
26 Jan 2026