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
Time Distance
kg583
381
42ms
17 mins ago
Catalan’s Constant
null-tangent
1,011
9ms
19 mins ago
Pernicious Numbers (Long)
rotemkm
68
18ms
20 mins ago
Pernicious Numbers
rotemkm
59
10ms
22 mins ago
Number Spiral
Lv0Sys
136
13ms
22 mins ago
CSS Colors
snoozingnewt
716
103ms
27 mins ago
Star Wars GPT
Lv0Sys
186
19ms
30 mins ago
CSS Colors
snoozingnewt
630
37ms
32 mins ago
CSS Colors
snoozingnewt
744
154ms
35 mins ago
Niven Numbers (Long)
netfri25
57
234ms
36 mins ago
Roman to Arabic
dgambit
288
36ms
37 mins ago
Fibonacci
Steffan153
🥈
44
4ms
39 mins ago
Calendar
FortuiteMan
🦄
1,268
21ms
41 mins ago
Quine
darrenks
643
2ms
42 mins ago
United States
snoozingnewt
150
543ms
43 mins ago
Arrows
Lv0Sys
165
11ms
43 mins ago
United States
snoozingnewt
158
10ms
43 mins ago
Time Distance
snoozingnewt
240
564ms
44 mins ago
Time Distance
snoozingnewt
248
12ms
44 mins ago
Ten-pin Bowling
snoozingnewt
164
473ms
45 mins ago
Ten-pin Bowling
snoozingnewt
173
10ms
45 mins ago
τ
snoozingnewt
68
381ms
46 mins ago
τ
snoozingnewt
68
12ms
46 mins ago
Niven Numbers (Long)
rotemkm
63
18ms
46 mins ago
Spelling Numbers
snoozingnewt
354
561ms
47 mins ago
Spelling Numbers
snoozingnewt
362
20ms
47 mins ago
Roman to Arabic
snoozingnewt
108
507ms
49 mins ago
Roman to Arabic
snoozingnewt
116
20ms
49 mins ago
Rijndael S-box
snoozingnewt
156
427ms
50 mins ago
Niven Numbers
rotemkm
61
10ms
50 mins ago
Rijndael S-box
snoozingnewt
156
21ms
51 mins ago
Repeating Decimals
snoozingnewt
176
556ms
53 mins ago
Repeating Decimals
snoozingnewt
184
12ms
53 mins ago
ROT13
snoozingnewt
68
384ms
54 mins ago
ROT13
snoozingnewt
🥇
68
11ms
54 mins ago
Quine
snoozingnewt
🥇
31
30ms
54 mins ago
π
snoozingnewt
71
421ms
56 mins ago
π
snoozingnewt
68
12ms
59 mins ago
Ordinal Numbers
snoozingnewt
86
374ms
60 mins ago
Ordinal Numbers
snoozingnewt
94
13ms
60 mins ago
Musical Chords
snoozingnewt
166
527ms
62 mins ago
Musical Chords
snoozingnewt
174
11ms
62 mins ago
Musical Chords
JOrE20
894
423ms
62 mins ago
Morse Decoder
snoozingnewt
187
617ms
63 mins ago
Morse Decoder
snoozingnewt
195
10ms
63 mins ago
Minesweeper
snoozingnewt
154
588ms
63 mins ago
Minesweeper
snoozingnewt
162
18ms
64 mins ago
Maze
snoozingnewt
137
695ms
64 mins ago
Maze
snoozingnewt
145
39ms
65 mins ago
Medal Tally
frankgraziano
🥉
144
152ms
66 mins ago
Mandelbrot
snoozingnewt
118
683ms
66 mins ago
Mandelbrot
snoozingnewt
119
179ms
67 mins ago
Reversi
Lv0Sys
282
20ms
67 mins ago
𝑒
Natanaelel
🥇
23
3,315ms
68 mins ago
Foo Fizz Buzz Bar
hoomishalom
🥇
83
11ms
69 mins ago
ISBN
snoozingnewt
94
497ms
69 mins ago
ISBN
snoozingnewt
102
11ms
70 mins ago
Foo Fizz Buzz Bar
rotemkm
🥇
83
11ms
70 mins ago
Hexdump
snoozingnewt
130
526ms
71 mins ago
Hexdump
snoozingnewt
138
10ms
72 mins ago
Fractions
snoozingnewt
88
16ms
74 mins ago
Forsyth–Edwards Notation
snoozingnewt
129
463ms
75 mins ago
Forsyth–Edwards Notation
snoozingnewt
137
10ms
75 mins ago
Fizz Buzz
rotemkm
59
10ms
76 mins ago
Fizz Buzz
hoomishalom
59
10ms
76 mins ago
12 Days of Christmas
JOrE20
692
411ms
78 mins ago
Factorial Factorisation
snoozingnewt
114
609ms
79 mins ago
Factorial Factorisation
snoozingnewt
114
58ms
79 mins ago
Cubes
snoozingnewt
187
660ms
79 mins ago
Cubes
snoozingnewt
187
10ms
80 mins ago
Catalan’s Constant
snoozingnewt
99
432ms
80 mins ago
Catalan’s Constant
snoozingnewt
99
18ms
80 mins ago
CSS Colors
snoozingnewt
💎
667
106ms
82 mins ago
CSS Colors
snoozingnewt
631
11ms
88 mins ago
Billiards
snoozingnewt
163
18ms
89 mins ago
Billiards
snoozingnewt
162
520ms
90 mins ago
Collatz
C32ardash
118
994ms
90 mins ago
Musical Chords
JOrE20
408
14ms
92 mins ago
Arrows
snoozingnewt
🥉
150
179ms
93 mins ago
Calendar
snoozingnewt
🥇
99
16ms
95 mins ago