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
Fibonacci
Andrey2001
84
102ms
36 hours ago
Intersection
blaztoma
162
99ms
46 hours ago
Polyominoes
blaztoma
🥈
315
109ms
2 days ago
N Queens
edsrzf
💎
159
108ms
3 days ago
Multitap Input
edsrzf
129
105ms
5 days ago
Jacobi Symbol
blaztoma
🥈
196
96ms
5 days ago
Smith Numbers
blaztoma
🥉
179
150ms
6 days ago
United States
dokutan
🥉
1,051
122ms
8 days ago
ROT13
dokutan
1,154
127ms
8 days ago
Rock-paper-scissors-Spock-lizard
dokutan
🥉
798
123ms
8 days ago
Lucky Tickets
dokutan
4,057
135ms
8 days ago
Emojify
dokutan
545
125ms
8 days ago
CSS Colors
dokutan
3,747
137ms
8 days ago
Sudoku
snoozingnewt
💎
559
136ms
9 days ago
Sudoku
blaztoma
🥈
578
144ms
9 days ago
Tutorial
albanian-laundromat
75
121ms
9 days ago
Tutorial
Mefred
234
150ms
9 days ago
Maze
blaztoma
🥉
204
353ms
11 days ago
Fibonacci
plcc0
68
113ms
11 days ago
Gray Code Decoder
GolfingSuccess
83
111ms
13 days ago
Minesweeper
blaztoma
🥉
230
301ms
13 days ago
Zeckendorf Representation
blaztoma
240
114ms
14 days ago
Vampire Numbers
edsrzf
💎
159
401ms
14 days ago
Vampire Numbers
blaztoma
🥈
163
230ms
14 days ago
Mahjong
blaztoma
💎
275
115ms
15 days ago
Zodiac Signs
blaztoma
🥈
193
121ms
17 days ago
Quine
IISResetMe
163
102ms
17 days ago
Mandelbrot
blaztoma
🥈
175
184ms
17 days ago
Quine
CornerMercury
🥇
62
106ms
18 days ago
Catalan’s Constant
JOrE20
1,025
120ms
18 days ago
Kaprekar Numbers
DialFrost
💎
121
2,657ms
18 days ago
Kaprekar Numbers
blaztoma
🥈
125
4,707ms
18 days ago
Gray Code Decoder
albanian-laundromat
95
119ms
18 days ago
ASCII Table
blaztoma
🥉
143
126ms
19 days ago
ln 2
JOrE20
1,045
141ms
20 days ago
Niven Numbers (Long)
sean-niemann
97
105ms
21 days ago
Niven Numbers
sean-niemann
🥇
69
99ms
21 days ago
Prime Numbers
sean-niemann
🥇
61
105ms
21 days ago
Tower of Hanoi
sean-niemann
🥉
95
117ms
21 days ago
Leap Years
sean-niemann
🥇
64
107ms
21 days ago
Fibonacci
nstearns96
106
176ms
22 days ago
Fizz Buzz
nstearns96
169
120ms
22 days ago
Calendar
edsrzf
💎
250
120ms
22 days ago
Topological Sort
snoozingnewt
🥇
165
121ms
23 days ago
Topological Sort
blaztoma
🥇
165
132ms
23 days ago
Calendar
JOrE20
🥈
1,806
170ms
23 days ago
Tutorial
HumanoidCPU
68
166ms
24 days ago
Zeckendorf Representation
edsrzf
🥉
157
113ms
25 days ago
SI Units
blaztoma
🥈
636
156ms
26 days ago
Emirp Numbers (Long)
edsrzf
🥈
148
1,056ms
27 days ago
Smith Numbers
edsrzf
💎
172
388ms
28 Dec 2025
Mahjong
snoozingnewt
🥈
276
115ms
27 Dec 2025
Gijswijt’s Sequence
blaztoma
195
157ms
27 Dec 2025
Number Spiral
blaztoma
🥉
217
134ms
27 Dec 2025
Diamonds
JOrE20
735
153ms
27 Dec 2025
Prime Numbers (Long)
edsrzf
💎
78
210ms
27 Dec 2025
Rock-paper-scissors-Spock-lizard
blaztoma
🥈
364
194ms
26 Dec 2025
Emojify
blaztoma
🥉
171
180ms
26 Dec 2025
Transpose Sentence
snoozingnewt
🥉
104
111ms
26 Dec 2025
ROT13
snoozingnewt
93
112ms
26 Dec 2025
Hexdump
snoozingnewt
🥈
238
122ms
26 Dec 2025
Star Wars Opening Crawl
snoozingnewt
🥈
660
140ms
26 Dec 2025
Poker
snoozingnewt
🥉
419
121ms
26 Dec 2025
Poker
blaztoma
🥈
415
160ms
26 Dec 2025
Poker
edsrzf
💎
404
181ms
25 Dec 2025
Hilbert Curve
JOrE20
🥉
4,463
152ms
25 Dec 2025
Star Wars Opening Crawl
blaztoma
💎
608
113ms
25 Dec 2025
Cubes
snoozingnewt
💎
277
110ms
25 Dec 2025
Partition Numbers
blaztoma
🥉
116
115ms
24 Dec 2025
Factorial Factorisation
JOrE20
811
122ms
24 Dec 2025
Kolakoski Constant
blaztoma
💎
164
115ms
24 Dec 2025
Tongue-twisters
blaztoma
414
117ms
24 Dec 2025
DFA Simulator
edsrzf
🥇
234
152ms
24 Dec 2025
Happy Numbers (Long)
edsrzf
🥇
112
129ms
24 Dec 2025
Musical Chords
edsrzf
💎
177
122ms
23 Dec 2025
Musical Chords
blaztoma
🥈
196
116ms
23 Dec 2025
Morse Encoder
edsrzf
💎
178
150ms
22 Dec 2025
Morse Decoder
edsrzf
💎
161
143ms
22 Dec 2025
Roman to Arabic
edsrzf
🥉
120
136ms
22 Dec 2025
Happy Numbers
albanian-laundromat
94
103ms
22 Dec 2025