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
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
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
Sierpiński Triangle
HumanoidCPU
126
115ms
10 hours ago
Arrows
blaztoma
448
332ms
2 days ago
Trinomial Triangle
MeWhenI
2,076
111ms
4 days ago
Arrows
dokutan
180
390ms
4 days ago
Arrows
snoozingnewt
1,074
380ms
4 days ago
Arrows
bitsandbeyond
176
351ms
4 days ago
99 Bottles of Beer
Echriser
312
118ms
5 days ago
Tower of Hanoi
HumanoidCPU
3,586
114ms
5 days ago
𝑒
JOrE20
1,008
110ms
5 days ago
Happy Numbers (Long)
dokutan
117
119ms
5 days ago
λ
snoozingnewt
768
267ms
6 days ago
γ
snoozingnewt
771
264ms
6 days ago
Gijswijt’s Sequence
edsrzf
101
433ms
7 days ago
24 Game
Ripick
🥈
374
1,314ms
7 days ago
Fibonacci
edsrzf
40
117ms
9 days ago
Tower of Hanoi
Shanethegamer
62
117ms
9 days ago
Card Number Validation
snoozingnewt
173
353ms
9 days ago
Levenshtein Distance
janAkali
95
356ms
9 days ago
Tower of Hanoi
bitsandbeyond
70
110ms
10 days ago
Scrambled Sort
Ripick
🥉
152
406ms
11 days ago
Set
snoozingnewt
253
457ms
12 days ago
Mandelbrot
snoozingnewt
229
125ms
12 days ago
Tutorial
Openstreetmapler
149
373ms
12 days ago
Minesweeper
Ripick
🥈
195
326ms
12 days ago
ASCII Table
edsrzf
🥈
128
355ms
14 days ago
Minesweeper
edsrzf
💎
154
397ms
14 days ago
SI Units
MichalMarsalek
🥈
552
821ms
15 days ago
Ellipse Perimeters
Shanethegamer
113
342ms
15 days ago
Minesweeper
Shanethegamer
🥉
196
353ms
16 days ago
Pangram Grep
Ralac07
166
346ms
16 days ago
Minesweeper
janAkali
243
374ms
16 days ago
Smith Numbers
Ripick
159
215ms
18 days ago
Tongue-twisters
snoozingnewt
355
267ms
19 days ago
Maze
Ripick
🥈
136
354ms
19 days ago
Divisors
edsrzf
💎
66
119ms
21 days ago
Pernicious Numbers
snoozingnewt
43
123ms
22 days ago
Hilbert Curve
snoozingnewt
549
262ms
24 days ago
DFA Simulator
snoozingnewt
307
325ms
25 days ago
Foo Fizz Buzz Bar
snoozingnewt
152
118ms
26 days ago
Tutorial
luuumine
149
360ms
27 days ago
Tutorial
Babafaba
149
355ms
27 days ago
Hilbert Curve
janAkali
5,127
115ms
15 Oct 2025
Seven Segment
janAkali
214
324ms
15 Oct 2025
Farey Sequence
snoozingnewt
151
121ms
15 Oct 2025
Trinomial Triangle
JayXon
💎
94
120ms
14 Oct 2025
Smith Numbers
snoozingnewt
195
153ms
13 Oct 2025
Van Eck Sequence
snoozingnewt
116
159ms
13 Oct 2025
Inventory Sequence
snoozingnewt
133
121ms
13 Oct 2025
Fizz Buzz
h3ra993huskp
144
123ms
13 Oct 2025
Pangram Grep
janAkali
96
367ms
12 Oct 2025
Odious Numbers
Babafaba
47
117ms
11 Oct 2025
Time Distance
janAkali
356
360ms
11 Oct 2025
Trinomial Triangle
edsrzf
🥈
100
119ms
10 Oct 2025
Arithmetic Numbers
snoozingnewt
90
301ms
10 Oct 2025
Pernicious Numbers (Long)
snoozingnewt
72
143ms
9 Oct 2025
Trinomial Triangle
Ripick
150
328ms
6 Oct 2025
Trinomial Triangle
dokutan
2,076
138ms
6 Oct 2025
Poker
edsrzf
💎
353
425ms
6 Oct 2025
Happy Numbers
snoozingnewt
101
129ms
5 Oct 2025
Intersection
snoozingnewt
194
383ms
5 Oct 2025
Niven Numbers (Long)
snoozingnewt
81
137ms
5 Oct 2025
Prime Numbers
snoozingnewt
72
129ms
5 Oct 2025
Prime Numbers (Long)
snoozingnewt
74
323ms
5 Oct 2025
Pernicious Numbers
Yax42
43
151ms
4 Oct 2025
Trinomial Triangle
snoozingnewt
🥉
128
267ms
3 Oct 2025
Quine
snoozingnewt
75
263ms
3 Oct 2025
Leap Years
snoozingnewt
56
353ms
3 Oct 2025
Odious Numbers (Long)
snoozingnewt
62
140ms
3 Oct 2025
Odious Numbers
snoozingnewt
61
139ms
3 Oct 2025
Evil Numbers (Long)
snoozingnewt
63
142ms
3 Oct 2025
Evil Numbers
snoozingnewt
61
118ms
3 Oct 2025
Recamán
snoozingnewt
137
152ms
3 Oct 2025
Happy Numbers (Long)
snoozingnewt
105
132ms
3 Oct 2025
Collatz
snoozingnewt
90
127ms
3 Oct 2025
Abundant Numbers (Long)
snoozingnewt
76
126ms
3 Oct 2025