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
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
Calendar
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
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
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
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
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
Calendar
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
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
Tower of Hanoi
RandGuy
132
10ms
a min ago
Ascending Primes
edsrzf
💎
112
4,650ms
14 mins ago
Poker
Lv0Sys
384
17ms
24 mins ago
Ascending Primes
HPWiz
70
1,116ms
31 mins ago
Ascending Primes
edsrzf
🥉
78
802ms
56 mins ago
Prime Numbers
IshanPanpaliya
41
9ms
58 mins ago
Ascending Primes
edsrzf
🥉
133
3,772ms
62 mins ago
Number Spiral
DialFrost
🥈
151
102ms
77 mins ago
Inventory Sequence
DialFrost
🥈
108
102ms
84 mins ago
Forsyth–Edwards Notation
edsrzf
💎
129
103ms
88 mins ago
Tower of Hanoi
btjones0
98
162ms
88 mins ago
Intersection
xnor-gate
114
34ms
89 mins ago
Forsyth–Edwards Notation
DialFrost
🥈
133
103ms
91 mins ago
ISBN
Shanethegamer
🥈
117
99ms
92 mins ago
Hilbert Curve
canissimia
💎
183
7ms
94 mins ago
Tower of Hanoi
snyderek
87
56ms
97 mins ago
Trinomial Triangle
KasperKivimaeki
69
10ms
101 mins ago
Odious Numbers (Long)
DialFrost
🥇
80
101ms
108 mins ago
Evil Numbers (Long)
DialFrost
🥇
80
102ms
108 mins ago
Day of Week
DialFrost
🥇
165
100ms
119 mins ago
Day of Week
DialFrost
189
7ms
2 hours ago
brainfuck
KasperKivimaeki
🥈
199
371ms
2 hours ago
Day of Week
DialFrost
169
247ms
2 hours ago
ISBN
KasperKivimaeki
150
343ms
2 hours ago
Tower of Hanoi
madex
80
2ms
2 hours ago
Spelling Numbers
alexsave
406
10ms
2 hours ago
Prime Numbers (Long)
KasperKivimaeki
🥇
71
364ms
2 hours ago
Prime Numbers
KasperKivimaeki
🥇
70
320ms
2 hours ago
Fibonacci
KasperKivimaeki
🥇
57
319ms
2 hours ago
Evil Numbers
KasperKivimaeki
🥉
60
333ms
2 hours ago
Evil Numbers (Long)
KasperKivimaeki
🥇
62
322ms
2 hours ago
Niven Numbers
KasperKivimaeki
🥇
65
339ms
2 hours ago
Fizz Buzz
KasperKivimaeki
🥇
89
337ms
2 hours ago
Hilbert Curve
canissimia
💎
214
343ms
2 hours ago
Evil Numbers
blaztoma
18
35ms
2 hours ago
Tic-tac-toe
emgordon154
💎
102
117ms
2 hours ago
Sudoku (Fill-in)
emgordon154
💎
230
3,692ms
3 hours ago
ASCII Table
DialFrost
💎
132
94ms
3 hours ago
Tower of Hanoi
blaztoma
🥇
29
37ms
3 hours ago
Maze
Shanethegamer
🥈
172
237ms
3 hours ago
Hilbert Curve
canissimia
💎
161
772ms
3 hours ago
Tower of Hanoi
blaztoma
70
2,065ms
3 hours ago
Tower of Hanoi
blaztoma
92
61ms
3 hours ago
Tower of Hanoi
blaztoma
91
11ms
3 hours ago
Time Distance
snoozingnewt
🦄
357
109ms
3 hours ago
Fizz Buzz
madex
161
97ms
3 hours ago
ln 2
emgordon154
🥈
122
134ms
3 hours ago
Emojify
snoozingnewt
🥈
181
109ms
3 hours ago
Emojify
snoozingnewt
213
98ms
3 hours ago
Emojify
snoozingnewt
154
510ms
4 hours ago
Emojify
snoozingnewt
162
9ms
4 hours ago
Factorial Factorisation
IshanPanpaliya
105
63ms
4 hours ago
Ascending Primes
edsrzf
143
1,162ms
5 hours ago
Tower of Hanoi
sean-niemann
🥉
86
25ms
5 hours ago
Maze
emgordon154
💎
170
389ms
5 hours ago
99 Bottles of Beer
ryyyn
🥇
206
404ms
5 hours ago
π
christensendaniel
90
18ms
6 hours ago
PalindromemordnilaP
Mukundan314
86
11ms
6 hours ago
Tower of Hanoi
sean-niemann
💎
89
25ms
6 hours ago
𝑒
sisyphus-ppcg
101
563ms
6 hours ago
Tower of Hanoi
DialFrost
65
591ms
6 hours ago
Billiards
acotis
🥇
233
166ms
6 hours ago
Ordinal Numbers
LostSyntax21
98
12ms
6 hours ago
Fizz Buzz
jkelly467
110
2ms
6 hours ago
Number Spiral
sisyphus-ppcg
💎
72
80ms
6 hours ago
Tower of Hanoi
DialFrost
🥈
59
98ms
6 hours ago
Tower of Hanoi
sean-niemann
🥈
46
3ms
6 hours ago
Tower of Hanoi
sean-niemann
🥉
67
1,212ms
7 hours ago
Tower of Hanoi
emgordon154
30
39ms
7 hours ago
Kaprekar Numbers
ryyyn
127
3,744ms
7 hours ago
Evil Numbers
pikapikapikapikapikapika
85
9ms
7 hours ago
Tower of Hanoi
jkelly467
102
2ms
7 hours ago
Tower of Hanoi
sean-niemann
💎
54
79ms
7 hours ago
Ascending Primes
edsrzf
💎
97
4,618ms
7 hours ago
Tower of Hanoi
DialFrost
🥇
76
336ms
7 hours ago