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)
Taxicab Numbers
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
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic 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)
Taxicab Numbers
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
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Nim
Shanethegamer
173
122ms
7 hours ago
Taxicab Numbers
dokutan
🥉
1,520
128ms
8 hours ago
Morse Decoder
edsrzf
🥈
157
109ms
11 hours ago
Morse Decoder
Steffan153
💎
148
113ms
11 hours ago
Ascending Primes
snoozingnewt
🥈
132
117ms
14 hours ago
Minesweeper
Steffan153
💎
133
135ms
15 hours ago
Vampire Numbers
snoozingnewt
🥈
155
209ms
16 hours ago
Jacobi Symbol
snoozingnewt
🥈
187
529ms
17 hours ago
Minesweeper
snoozingnewt
🥈
136
143ms
17 hours ago
Sudoku (Fill-in)
snoozingnewt
🥈
229
311ms
17 hours ago
Billiards
edsrzf
🥈
211
108ms
22 hours ago
Taxicab Numbers
edsrzf
🥈
116
166ms
33 hours ago
Vampire Numbers
edsrzf
💎
153
448ms
34 hours ago
Set
Steffan153
💎
131
962ms
34 hours ago
Hexdump
snoozingnewt
🥈
233
113ms
35 hours ago
Rock-paper-scissors-Spock-lizard
snoozingnewt
🥈
270
130ms
36 hours ago
Set
snoozingnewt
🥉
159
114ms
36 hours ago
Niven Numbers (Long)
blaztoma
🥇
88
100ms
38 hours ago
γ
snoozingnewt
🥈
212
125ms
38 hours ago
Kolakoski Constant
snoozingnewt
🥈
155
110ms
39 hours ago
Niven Numbers
blaztoma
🥇
69
109ms
40 hours ago
Leyland Numbers
snoozingnewt
🥈
118
109ms
41 hours ago
Taxicab Numbers
snoozingnewt
💎
112
148ms
41 hours ago
Taxicab Numbers
CaedenHarper
4,666
112ms
2 days ago
Dragon Curve
dokutan
1,119
113ms
2 days ago
Calendar
snoozingnewt
🥉
271
111ms
3 days ago
QR Decoder
scpchicken
🥇
172
106ms
3 days ago
Mandelbrot
blaztoma
🥉
170
167ms
4 days ago
Quine
MeWhenI
🥇
62
91ms
5 days ago
γ
Steffan153
💎
141
134ms
5 days ago
Tower of Hanoi
edsrzf
🥈
92
102ms
5 days ago
Kolakoski Constant
edsrzf
💎
153
120ms
5 days ago
Mahjong
blaztoma
💎
240
121ms
6 days ago
Fractions
edsrzf
🥉
134
115ms
6 days ago
Kolakoski Sequence
madeforlosers
2,025
106ms
6 days ago
Diamonds
snoozingnewt
🥈
121
104ms
7 days ago
Dragon Curve
HumanoidCPU
10,295
132ms
7 days ago
Dragon Curve
Shanethegamer
10,295
168ms
7 days ago
Lucky Tickets
blaztoma
🥈
156
133ms
7 days ago
Evil Numbers
madeforlosers
95
120ms
7 days ago
τ
madeforlosers
1,028
203ms
7 days ago
Reverse Polish Notation
DialFrost
🥈
147
100ms
8 days ago
Reverse Polish Notation
edsrzf
💎
146
99ms
8 days ago
λ
Steffan153
246
2,484ms
8 days ago
λ
edsrzf
270
126ms
8 days ago
Cubes
madeforlosers
2,852
117ms
8 days ago
Odious Numbers
madeforlosers
98
107ms
8 days ago
Evil Numbers (Long)
madeforlosers
1,975
98ms
8 days ago
Farey Sequence
madeforlosers
4,379
121ms
8 days ago
Odious Numbers (Long)
madeforlosers
1,970
115ms
8 days ago
Abundant Numbers
madeforlosers
188
99ms
8 days ago
Abundant Numbers (Long)
madeforlosers
989
102ms
8 days ago
Prime Numbers
madeforlosers
96
100ms
8 days ago
Leap Years
blaztoma
62
101ms
8 days ago
Look and Say
madeforlosers
1,304
107ms
8 days ago
𝑒
madeforlosers
1,028
101ms
8 days ago
Prime Numbers (Long)
madeforlosers
5,973
134ms
8 days ago
Seven Segment
Steffan153
🥈
115
98ms
8 days ago
Divisors
madeforlosers
1,191
107ms
8 days ago
Foo Fizz Buzz Bar
madeforlosers
5,744
117ms
8 days ago
12 Days of Christmas
madeforlosers
2,394
109ms
8 days ago
Tongue-twisters
madeforlosers
548
102ms
8 days ago
Fibonacci
madeforlosers
159
100ms
8 days ago
Niven Numbers (Long)
madeforlosers
7,463
136ms
8 days ago
Fizz Buzz
madeforlosers
438
108ms
8 days ago
Seven Segment
edsrzf
💎
106
97ms
8 days ago
Multitap Input
edsrzf
💎
124
109ms
9 days ago
Look and Say
edsrzf
💎
110
100ms
9 days ago
Kolakoski Sequence
edsrzf
🥇
96
102ms
9 days ago
Kolakoski Sequence
snoozingnewt
🥇
96
107ms
9 days ago
Prime Numbers (Long)
prestosilver
146
112ms
9 days ago
Minesweeper
edsrzf
🥉
139
192ms
10 days ago
Game of Life
edsrzf
💎
131
124ms
10 days ago
Maze
Steffan153
💎
136
282ms
10 days ago
Poker
edsrzf
🥈
393
128ms
10 days ago
Maze
edsrzf
🥉
146
260ms
10 days ago
CSS Colors
edsrzf
🥈
682
107ms
10 days ago
Emirp Numbers (Long)
snoozingnewt
🥇
132
455ms
10 days ago
ROT13
snoozingnewt
🥉
79
97ms
10 days ago
PalindromemordnilaP
snoozingnewt
🥈
83
98ms
10 days ago
Gijswijt’s Sequence
snoozingnewt
🥈
117
152ms
10 days ago
Star Wars Opening Crawl
snoozingnewt
💎
488
113ms
10 days ago
Star Wars Opening Crawl
blaztoma
🥈
496
115ms
11 days ago
Gijswijt’s Sequence
edsrzf
💎
89
105ms
11 days ago
Medal Tally
snoozingnewt
🥈
180
106ms
11 days ago
Topological Sort
snoozingnewt
💎
147
119ms
11 days ago
QR Decoder
snoozingnewt
🥇
172
100ms
11 days ago
Mahjong
snoozingnewt
🥈
243
106ms
11 days ago
Alphabetic Numbers
Shanethegamer
3,917
116ms
11 days ago
Number Spiral
blaztoma
147
102ms
11 days ago
QR Decoder
blaztoma
🥉
175
108ms
11 days ago
Morse Decoder
blaztoma
🥉
233
105ms
11 days ago
Topological Sort
blaztoma
🥈
148
123ms
11 days ago
Musical Chords
Steffan153
💎
150
117ms
13 days ago
Partition Numbers
snoozingnewt
120
100ms
15 days ago
Recamán
Steffan153
🥇
99
123ms
15 days ago
Recamán
edsrzf
103
110ms
15 days ago
Zeckendorf Representation
edsrzf
🥉
155
106ms
15 days ago
Set
edsrzf
165
162ms
15 days ago
Number Spiral
edsrzf
🥉
132
106ms
15 days ago