Recent Solutions
Prev Hole
Play Hole
Next Hole
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
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
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
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
Chars
Time
Submitted
N Queens
dokutan
🥉
370
3ms
8 hours ago
N Queens
dokutan
373
786ms
8 hours ago
N Queens
Lv0Sys
126
12ms
22 hours ago
N Queens
ovs-code
💎
111
5ms
39 hours ago
N Queens
TheZwierzLF
173
595ms
2 days ago
N Queens
TheZwierzLF
187
37ms
2 days ago
N Queens
KasperKivimaeki
172
391ms
2 days ago
N Queens
KasperKivimaeki
132
2ms
2 days ago
N Queens
KasperKivimaeki
146
14ms
3 days ago
N Queens
HumanoidCPU
1,299
284ms
4 days ago
N Queens
HumanoidCPU
1,837
2ms
4 days ago
N Queens
JOrE20
292
10ms
4 days ago
N Queens
snoozingnewt
232
431ms
5 days ago
N Queens
edsrzf
💎
163
99ms
5 days ago
N Queens
Shanethegamer
🥉
1,266
96ms
6 days ago
N Queens
emgordon154
🥈
176
196ms
7 days ago
N Queens
Carlos-EAC
1,436
957ms
7 days ago
N Queens
Carlos-EAC
1,401
10ms
7 days ago
N Queens
CaedenHarper
1,415
99ms
9 days ago
N Queens
ethanlally
232
620ms
9 days ago
N Queens
dokutan
🥈
527
57ms
9 days ago
N Queens
HumanoidCPU
1,392
7ms
9 days ago
N Queens
KatieLG
🥉
1,178
1,133ms
10 days ago
N Queens
KatieLG
1,162
153ms
10 days ago
N Queens
KatieLG
1,128
8ms
10 days ago
N Queens
KatieLG
1,172
92ms
10 days ago
N Queens
KatieLG
1,171
651ms
10 days ago
N Queens
KatieLG
1,137
122ms
10 days ago
N Queens
KatieLG
1,186
280ms
10 days ago
N Queens
KatieLG
1,184
155ms
10 days ago
N Queens
KatieLG
1,213
71ms
10 days ago
N Queens
KatieLG
1,189
311ms
10 days ago
N Queens
KatieLG
1,311
635ms
10 days ago
N Queens
KatieLG
🥉
1,091
3ms
10 days ago
N Queens
KatieLG
1,209
7ms
10 days ago
N Queens
KatieLG
1,172
3,254ms
10 days ago
N Queens
KatieLG
1,206
376ms
10 days ago
N Queens
KatieLG
1,253
258ms
10 days ago
N Queens
KatieLG
🥉
1,210
103ms
10 days ago
N Queens
KatieLG
1,175
347ms
10 days ago
N Queens
KatieLG
1,133
757ms
10 days ago
N Queens
KatieLG
1,172
18ms
10 days ago
N Queens
KatieLG
1,251
1ms
10 days ago
N Queens
KatieLG
1,193
132ms
10 days ago
N Queens
h3ra993huskp
296
532ms
11 days ago
N Queens
tomh1012
338
1,242ms
12 days ago
N Queens
targrik
195
55ms
12 days ago
N Queens
HumanoidCPU
1,281
46ms
13 days ago
N Queens
FortuiteMan
166
31ms
13 days ago
N Queens
FortuiteMan
121
81ms
13 days ago
N Queens
JOrE20
1,377
26ms
13 days ago
N Queens
bizy-coder
111
506ms
14 days ago
N Queens
MeWhenI
143
13ms
15 days ago
N Queens
vhoulbreque
238
12ms
16 days ago
N Queens
CornerMercury
91
12ms
16 days ago
N Queens
KatieLG
1,256
2ms
19 days ago
N Queens
KatieLG
1,401
3ms
19 days ago
N Queens
KatieLG
1,435
4ms
19 days ago
N Queens
snoozingnewt
101
477ms
20 days ago
N Queens
snoozingnewt
101
57ms
20 days ago
N Queens
snoozingnewt
191
113ms
20 days ago
N Queens
HumanoidCPU
655
3ms
20 days ago
N Queens
Yax42
192
369ms
21 days ago
N Queens
dokutan
659
73ms
21 days ago
N Queens
edsrzf
💎
107
4ms
21 days ago
N Queens
ovs-code
🥈
108
3ms
21 days ago
N Queens
sean-niemann
🥉
122
4ms
22 days ago
N Queens
rucin93
124
4ms
22 days ago
N Queens
KatieLG
1,165
67ms
22 days ago
N Queens
dokutan
1,259
22ms
22 days ago
N Queens
dokutan
1,251
81ms
22 days ago
N Queens
KatieLG
1,236
15ms
22 days ago
N Queens
emgordon154
🥈
38
116ms
24 days ago
N Queens
HumanoidCPU
1,551
8ms
25 days ago
N Queens
edsrzf
💎
140
93ms
26 days ago