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
Gray Code Decoder
Gray Code Encoder
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
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
Gray Code Decoder
Gray Code Encoder
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
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
Bytes
Time
Submitted
ln 2
blaztoma
70
45ms
5 mins ago
Leyland Numbers
blaztoma
56
36ms
6 mins ago
Look and Say
madeforlosers
1,284
37ms
72 mins ago
Prime Numbers (Long)
madeforlosers
5,953
40ms
79 mins ago
Divisors
madeforlosers
1,171
37ms
86 mins ago
Foo Fizz Buzz Bar
madeforlosers
5,724
36ms
93 mins ago
12 Days of Christmas
madeforlosers
2,374
39ms
100 mins ago
Tongue-twisters
madeforlosers
528
36ms
106 mins ago
Niven Numbers (Long)
madeforlosers
7,443
38ms
110 mins ago
Leap Years
blaztoma
39
42ms
2 hours ago
Fizz Buzz
madeforlosers
418
36ms
3 hours ago
Sudoku (Fill-in)
scpchicken
193
50ms
10 hours ago
Kaprekar Numbers
blaztoma
87
708ms
12 hours ago
Morse Decoder
blaztoma
171
36ms
12 hours ago
Morse Encoder
blaztoma
149
39ms
14 hours ago
Arithmetic Numbers
HumanoidCPU
66
1,175ms
17 hours ago
Seven Segment
JayXon
🥇
86
36ms
18 hours ago
Numbrix
Natanaelel
1,190
225ms
20 hours ago
Numbrix
madex
318
4,533ms
21 hours ago
Seven Segment
Steffan153
🥇
86
36ms
24 hours ago
Flags
bitsandbeyond
638
106ms
31 hours ago
Mahjong
kg583
🥈
175
90ms
37 hours ago
λ
Steffan153
160
3,477ms
41 hours ago
Fizz Buzz
GolfingSuccess
🥇
50
41ms
47 hours ago
Tower of Hanoi
denkyuu1
556
40ms
2 days ago
Card Number Validation
denkyuu1
73
39ms
2 days ago
Tongue-twisters
denkyuu1
410
40ms
2 days ago
Number Spiral
blaztoma
90
38ms
2 days ago
Alphabetic Numbers
Shanethegamer
3,900
38ms
3 days ago
Tower of Hanoi
scpchicken
53
39ms
3 days ago
ISBN
blaztoma
68
42ms
3 days ago
Inventory Sequence
blaztoma
45
39ms
3 days ago
Intersection
blaztoma
97
41ms
3 days ago
Niven Numbers (Long)
scpchicken
🥇
38
43ms
3 days ago
Divisors
scpchicken
🥇
44
39ms
3 days ago
Musical Chords
Steffan153
💎
80
41ms
3 days ago
Quine
scpchicken
🥇
25
37ms
3 days ago
Fizz Buzz
scpchicken
🥇
50
37ms
3 days ago
Musical Chords
JayXon
🥈
81
39ms
4 days ago
Prime Numbers (Long)
madex
34
43ms
5 days ago
24 Game
madex
216
2,129ms
5 days ago
Mahjong
stefangimmillaro
220
75ms
5 days ago
Diamonds
denkyuu1
96
36ms
5 days ago
Smooth Numbers
Matter1024
72
98ms
6 days ago
Zodiac Signs
jusaka
462
41ms
6 days ago
Hexdump
jusaka
214
40ms
6 days ago
Lucky Numbers
denkyuu1
77
1,590ms
6 days ago
Hilbert Curve
blaztoma
🥉
186
48ms
6 days ago
Billiards
jusaka
265
39ms
6 days ago
SI Units
jusaka
1,258
43ms
6 days ago
Star Wars Opening Crawl
jusaka
841
40ms
6 days ago
QR Decoder
jusaka
197
37ms
6 days ago
Mahjong
jusaka
775
39ms
6 days ago
Quine
jusaka
🥇
25
40ms
6 days ago
Polyominoes
jusaka
4,836
35ms
6 days ago
Odd Polyomino Tiling
jusaka
21,644
36ms
6 days ago
Gray Code Encoder
snoozingnewt
36
41ms
6 days ago
Hexagonal Spiral
jusaka
1,341
40ms
7 days ago
Quadratic Formula
jusaka
1,614
40ms
7 days ago
Turtle
jusaka
957
41ms
7 days ago
Star Wars GPT
jusaka
793
42ms
7 days ago
Sudoku (Fill-in)
jusaka
1,681
50ms
7 days ago
DFA Simulator
jusaka
968
48ms
7 days ago
Flags
jusaka
4,780
49ms
7 days ago
Forsyth–Edwards Notation
jusaka
523
40ms
7 days ago
Reversi
jusaka
773
43ms
7 days ago
Set
jusaka
558
55ms
7 days ago
Maze
jusaka
1,009
56ms
7 days ago
Poker
jusaka
1,155
54ms
7 days ago
Calendar
jusaka
538
42ms
7 days ago
Christmas Trees
jusaka
143
39ms
7 days ago
Rectangle Fill
jusaka
679
45ms
7 days ago
Spelling Numbers
jusaka
838
43ms
7 days ago
Snake
jusaka
618
42ms
7 days ago
Proximity Grid
jusaka
1,032
40ms
7 days ago
Mandelbrot
jusaka
417
152ms
7 days ago
Tongue-twisters
jusaka
529
39ms
7 days ago
Medal Tally
jusaka
342
38ms
7 days ago
Intersection
jusaka
230
40ms
7 days ago
Musical Chords
jusaka
877
40ms
7 days ago