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
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
Multitap Input
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
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
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
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
Multitap Input
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
12 Days of Christmas
TheZwierzLF
705
40ms
3 mins ago
Leap Years
Murphy4444
28
311ms
5 mins ago
Tic-tac-toe
DavidAJL
108
29ms
13 mins ago
Poker
TeodorDyakov
🥉
358
635ms
27 mins ago
Smith Numbers
KatieLG
🥈
290
1,234ms
34 mins ago
Fibonacci
TheZwierzLF
27
40ms
36 mins ago
Diamonds
lelbal
90
10ms
40 mins ago
Calendar
nwellnhof
💎
170
12ms
49 mins ago
Tower of Hanoi
kg583
109
7ms
51 mins ago
99 Bottles of Beer
ovs-code
256
138ms
74 mins ago
Calendar
nwellnhof
💎
211
385ms
75 mins ago
Sierpiński Triangle
sean-niemann
🥈
73
88ms
2 hours ago
Emirp Numbers (Long)
Yax42
89
81ms
2 hours ago
Emirp Numbers (Long)
Yax42
109
109ms
2 hours ago
Fizz Buzz
ivan-saratovskii
138
1,253ms
2 hours ago
Topological Sort
IISResetMe
332
1,284ms
2 hours ago
QR Decoder
nemoyatpeace
348
10ms
2 hours ago
Sierpiński Triangle
sean-niemann
🥉
88
120ms
2 hours ago
Reversi
bzijlema
148
27ms
2 hours ago
Kaprekar Numbers
Murphy4444
439
223ms
2 hours ago
99 Bottles of Beer
Murphy4444
346
230ms
2 hours ago
Vampire Numbers
zhaohm14
125
604ms
3 hours ago
Rule 110
IISResetMe
133
341ms
3 hours ago
Day of Week
IISResetMe
🥇
16
301ms
3 hours ago
Foo Fizz Buzz Bar
TeodorDyakov
139
386ms
3 hours ago
Star Wars Opening Crawl
rucin93
276
11ms
4 hours ago
Zodiac Signs
Yax42
296
4ms
4 hours ago
Lucky Numbers
Yax42
334
5ms
4 hours ago
Look and Say
Yax42
512
3ms
4 hours ago
Day of Week
Yax42
270
3ms
4 hours ago
Card Number Validation
Yax42
111
2ms
4 hours ago
Tower of Hanoi
Yax42
69
2ms
4 hours ago
Day of Week
edsrzf
77
109ms
4 hours ago
Tower of Hanoi
Yax42
81
380ms
4 hours ago
Calendar
stefangimmillaro
282
367ms
4 hours ago
Mahjong
blaztoma
💎
275
105ms
4 hours ago
Tongue-twisters
duckyluuk
302
9ms
4 hours ago
Pangram Grep
edsrzf
35
106ms
4 hours ago
Tutorial
edsrzf
34
118ms
5 hours ago
99 Bottles of Beer
TeodorDyakov
389
377ms
5 hours ago
Sierpiński Triangle
kumavale
🥈
87
128ms
5 hours ago
Calendar
zhaohm14
101
16ms
5 hours ago
Calendar
Msleizak
337
308ms
5 hours ago
Factorial Factorisation
emgordon154
🥈
230
1,636ms
6 hours ago
Day of Week
emgordon154
🥈
335
1,729ms
6 hours ago
Star Wars GPT
JayXon
121
13ms
6 hours ago
Roman to Arabic
zhaohm14
123
21ms
7 hours ago
Fractions
canissimia
🥇
45
6ms
7 hours ago
Emirp Numbers (Long)
emgordon154
🥉
206
1,984ms
9 hours ago
brainfuck
janAkali
344
353ms
10 hours ago
Flags
IISResetMe
11,954
238ms
11 hours ago
Multitap Input
IISResetMe
126
340ms
12 hours ago
Fractions
zhaohm14
95
19ms
12 hours ago
24 Game
77Tigers
381
1,072ms
12 hours ago
Kaprekar Numbers
KatieLG
285
4,433ms
12 hours ago
Lucky Numbers
77Tigers
77
12ms
12 hours ago
𝑒
77Tigers
76
18ms
12 hours ago
Pernicious Numbers (Long)
77Tigers
66
21ms
12 hours ago
Smooth Numbers
GolfingSuccess
72
1,491ms
13 hours ago
Emirp Numbers (Long)
77Tigers
125
179ms
13 hours ago
Prime Numbers (Long)
77Tigers
70
190ms
13 hours ago
Trinomial Triangle
KatieLG-Transpiler
2,086
3ms
13 hours ago
Tower of Hanoi
KatieLG-Transpiler
3,596
2ms
13 hours ago
Taxicab Numbers
KatieLG-Transpiler
4,179
2ms
13 hours ago
Sphenic Numbers
KatieLG-Transpiler
8,879
3ms
13 hours ago
Semiprime Numbers
KatieLG-Transpiler
12,808
3ms
13 hours ago
Polygon Triangulations
KatieLG-Transpiler
4,331
2ms
13 hours ago
Partition Numbers
KatieLG-Transpiler
666
3ms
13 hours ago
Odd Polyomino Tiling
KatieLG-Transpiler
21,450
2ms
13 hours ago
Mandelbrot
KatieLG-Transpiler
10,023
2ms
13 hours ago
Kaprekar Numbers
KatieLG-Transpiler
459
3ms
13 hours ago
Hilbert Curve
KatieLG-Transpiler
5,137
3ms
13 hours ago
Highly Composite Numbers
KatieLG-Transpiler
411
3ms
13 hours ago
Apéry’s Constant
KatieLG-Transpiler
1,018
2ms
13 hours ago
Apéry’s Constant
KatieLG-Transpiler
1,008
14ms
13 hours ago
Trinomial Triangle
KatieLG-Transpiler
2,094
95ms
13 hours ago
Tower of Hanoi
KatieLG-Transpiler
4,095
94ms
13 hours ago
Taxicab Numbers
KatieLG-Transpiler
4,652
97ms
13 hours ago
Sphenic Numbers
KatieLG-Transpiler
10,667
97ms
13 hours ago
Semiprime Numbers
KatieLG-Transpiler
15,421
102ms
13 hours ago