Recent Solutions
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
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
Tower of Hanoi
Turtle
Tutorial
All Languages
><>
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
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
Erlang
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
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
Erlang
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
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
Tower of Hanoi
Turtle
Tutorial
Hole
Golfer
Bytes
Time
Submitted
Zeckendorf Representation
bitsandbeyond
118
226ms
32 mins ago
Smooth Numbers
bitsandbeyond
131
287ms
7 hours ago
Smooth Numbers
ovs-code
85
557ms
12 hours ago
Smooth Numbers
Shanethegamer
101
1,134ms
19 hours ago
Fractions
Shanethegamer
63
339ms
2 days ago
Fibonacci
cefqrn
50
181ms
5 days ago
Fibonacci
Zach1031
62
195ms
7 days ago
Collatz
StronkCheese2
88
205ms
10 days ago
Tutorial
msbranicky
76
254ms
11 days ago
τ
blaztoma
🥇
40
1,956ms
14 days ago
Trinomial Triangle
MeWhenI
2,075
188ms
14 days ago
Tower of Hanoi
HumanoidCPU
3,585
147ms
15 days ago
γ
gigaprofisi
1,011
167ms
17 days ago
φ
Babafaba
41
190ms
17 days ago
𝑒
JOrE20
1,011
166ms
19 days ago
Tower of Hanoi
Shanethegamer
49
351ms
19 days ago
Card Number Validation
snoozingnewt
124
228ms
19 days ago
Tower of Hanoi
bitsandbeyond
58
198ms
19 days ago
ROT13
snoozingnewt
86
214ms
20 days ago
Arabic to Roman
blaztoma
189
333ms
21 days ago
Fractions
snoozingnewt
79
289ms
22 days ago
Forsyth–Edwards Notation
snoozingnewt
150
468ms
22 days ago
Mandelbrot
snoozingnewt
186
392ms
23 days ago
Tutorial
Openstreetmapler
135
271ms
23 days ago
Kolakoski Sequence
snoozingnewt
113
190ms
23 days ago
Catalan Numbers
snoozingnewt
61
195ms
23 days ago
ROT13
blaztoma
107
291ms
24 days ago
Partition Numbers
blaztoma
65
294ms
25 days ago
Minesweeper
Shanethegamer
🥈
109
354ms
25 days ago
ln 2
blaztoma
🥇
40
2,238ms
26 days ago
Kaprekar Numbers
blaztoma
96
688ms
26 days ago
τ
snoozingnewt
🥇
40
1,909ms
27 days ago
𝑒
snoozingnewt
🥇
31
191ms
27 days ago
π
snoozingnewt
🥇
31
222ms
27 days ago
γ
snoozingnewt
🥇
42
243ms
27 days ago
ln 2
snoozingnewt
🥇
40
1,866ms
27 days ago
Catalan’s Constant
snoozingnewt
🥇
46
240ms
27 days ago
√2
snoozingnewt
🥇
36
1,830ms
27 days ago
φ
blaztoma
🥇
37
197ms
27 days ago
π
Emutis
35
212ms
27 days ago
π
blaztoma
🥇
31
200ms
27 days ago
Catalan’s Constant
Emutis
🥇
46
226ms
27 days ago
√2
blaztoma
37
201ms
27 days ago
𝑒
blaztoma
🥇
31
197ms
27 days ago
γ
blaztoma
🥇
42
232ms
27 days ago
Catalan’s Constant
blaztoma
🥇
46
234ms
27 days ago
Minesweeper
antimon2
💎
91
501ms
27 days ago
φ
snoozingnewt
🥇
37
177ms
27 days ago
λ
blaztoma
227
377ms
25 Oct 2025
Trinomial Triangle
JayXon
💎
59
423ms
25 Oct 2025
Tongue-twisters
snoozingnewt
334
212ms
23 Oct 2025
Ellipse Perimeters
Shanethegamer
70
366ms
21 Oct 2025
Pernicious Numbers
snoozingnewt
38
299ms
20 Oct 2025
λ
HPWiz
🥇
148
2,544ms
19 Oct 2025
Scrambled Sort
MarcMush
79
961ms
18 Oct 2025
Hilbert Curve
snoozingnewt
🥈
536
198ms
18 Oct 2025
Mandelbrot
MarcMush
97
2,773ms
18 Oct 2025
Hilbert Curve
MarcMush
1,513
264ms
18 Oct 2025
Billiards
MarcMush
155
1,324ms
18 Oct 2025
Trinomial Triangle
MarcMush
65
641ms
18 Oct 2025
DFA Simulator
snoozingnewt
177
386ms
18 Oct 2025
Tutorial
luuumine
135
336ms
16 Oct 2025
Tutorial
Babafaba
135
358ms
15 Oct 2025
United States
blaztoma
116
292ms
14 Oct 2025
τ
Emutis
45
206ms
14 Oct 2025
φ
Emutis
51
183ms
14 Oct 2025
Leap Years
snoozingnewt
48
305ms
14 Oct 2025
Smith Numbers
snoozingnewt
108
393ms
14 Oct 2025
Van Eck Sequence
snoozingnewt
83
285ms
13 Oct 2025
Levenshtein Distance
blaztoma
281
291ms
13 Oct 2025
Jacobi Symbol
blaztoma
🥉
108
239ms
13 Oct 2025
Kolakoski Constant
blaztoma
199
205ms
13 Oct 2025
Odious Numbers (Long)
blaztoma
43
319ms
13 Oct 2025
γ
Emutis
66
241ms
13 Oct 2025
Collatz
blaztoma
61
246ms
13 Oct 2025