The
Snake
hole will go live in approximately
6 days
. Why not try and solve it ahead of time?
Recent Solutions
Achievements
Cheevos
Golfers
Solutions
All Holes
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Alphabetic Numbers
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Chess Move Validation
Christmas Trees
Collatz
Connect Four
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
Nim
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
Ulam Sequence
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Apéry’s Constant
Binary Lambda Calculus
Chess960 Decoder
Chess960 Encoder
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
Langton’s Ant
Lyndon Factorization
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
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
iogii
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
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
ZuzuScript
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
iogii
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
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
ZuzuScript
Hole
All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Alphabetic Numbers
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Chess Move Validation
Christmas Trees
Collatz
Connect Four
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
Nim
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
Ulam Sequence
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
Chess960 Decoder
Chess960 Encoder
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
Langton’s Ant
Lyndon Factorization
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
Hole
Golfer
Bytes
Time
Submitted
CSS Colors
edsrzf
💎
657
7ms
46 hours ago
CSS Colors
kg583
🥈
661
67ms
47 hours ago
Game of Life
edsrzf
🥇
103
5ms
6 days ago
Game of Life
Steffan153
🥇
103
6ms
6 days ago
Pernicious Numbers
albanian-laundromat
41
4ms
7 days ago
Rock-paper-scissors-Spock-lizard
christos-cantina-security
757
5ms
9 days ago
Fibonacci
christos-cantina-security
73
4ms
9 days ago
Zodiac Signs
edsrzf
🥇
159
7ms
14 days ago
Rock-paper-scissors-Spock-lizard
emgordon154
315
4ms
14 days ago
Sierpiński Triangle
edsrzf
🥉
73
4ms
17 days ago
Chess Move Validation
Steffan153
🥇
114
7ms
17 days ago
Chess Move Validation
edsrzf
🥇
114
7ms
17 days ago
Number Spiral
edsrzf
🥈
111
4ms
19 days ago
Set
kg583
🥈
134
45ms
22 days ago
Tutorial
zzh1996
58
4ms
23 days ago
Emirp Numbers
Steffan153
🥇
72
4ms
23 days ago
Van Eck Sequence
edsrzf
🥉
61
5ms
24 days ago
Smith Numbers
edsrzf
🥇
116
636ms
24 days ago
Card Number Validation
edsrzf
💎
79
5ms
24 days ago
Card Number Validation
Steffan153
🥈
81
5ms
24 days ago
Happy Numbers (Long)
edsrzf
🥇
78
14ms
24 days ago
Niven Numbers (Long)
edsrzf
🥇
52
14ms
24 days ago
Smith Numbers
kg583
🥉
118
671ms
24 days ago
Niven Numbers (Long)
kg583
🥇
52
13ms
24 days ago
Emirp Numbers
edsrzf
🥇
72
4ms
24 days ago
Card Number Validation
kg583
🥉
82
4ms
24 days ago
Happy Numbers (Long)
kg583
🥇
78
14ms
24 days ago
Foo Fizz Buzz Bar
edsrzf
💎
80
6ms
25 days ago
Collatz
edsrzf
🥇
76
12ms
25 days ago
Ordinal Numbers
edsrzf
🥉
84
5ms
25 days ago
Look and Say
edsrzf
💎
76
5ms
27 days ago
Abundant Numbers
Steffan153
🥇
49
4ms
27 Aug 2026
Abundant Numbers
edsrzf
🥇
49
4ms
27 Aug 2026
Prime Numbers (Long)
Florian-Mt
78
535ms
26 Aug 2026
Prime Numbers
Florian-Mt
77
4ms
26 Aug 2026
Niven Numbers
albanian-laundromat
51
4ms
26 Aug 2026
Kolakoski Constant
edsrzf
🥈
170
234ms
25 Aug 2026
Kolakoski Sequence
edsrzf
🥈
79
4ms
25 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,011
4ms
24 Aug 2026
brainfuck
kg583
🥉
165
105ms
23 Aug 2026
Musical Chords
edsrzf
💎
118
11ms
21 Aug 2026
Tutorial
quasar098
146
4ms
20 Aug 2026
Emojify
scpchicken
480
4ms
20 Aug 2026
DFA Simulator
scpchicken
882
5ms
20 Aug 2026
Day of Week
scpchicken
797
7ms
20 Aug 2026
CSS Colors
scpchicken
3,428
4ms
20 Aug 2026
Continued Fractions
scpchicken
781
4ms
20 Aug 2026
Connect Four
scpchicken
🥈
708
12ms
20 Aug 2026
Odious Numbers (Long)
kg583
57
4ms
20 Aug 2026
Evil Numbers (Long)
kg583
55
5ms
20 Aug 2026
Time Distance
edsrzf
🥉
283
6ms
19 Aug 2026
Card Number Validation
scpchicken
521
5ms
16 Aug 2026
Calendar
scpchicken
🥉
912
5ms
16 Aug 2026
brainfuck
scpchicken
954
5ms
16 Aug 2026
Billiards
scpchicken
867
4ms
16 Aug 2026
Arrows
scpchicken
716
5ms
16 Aug 2026
Arabic to Roman
scpchicken
943
9ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
6,727
4ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
2,459
3ms
16 Aug 2026
Evil Numbers
scpchicken
103
4ms
16 Aug 2026
Farey Sequence
scpchicken
5,137
3ms
16 Aug 2026
Fibonacci
scpchicken
173
4ms
16 Aug 2026
Factorial Factorisation
scpchicken
871
4ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,404
3ms
16 Aug 2026
Emirp Numbers
scpchicken
180
3ms
16 Aug 2026
Divisors
scpchicken
1,274
3ms
16 Aug 2026
Diamonds
scpchicken
1,200
4ms
16 Aug 2026
Collatz
scpchicken
4,234
4ms
16 Aug 2026
Christmas Trees
scpchicken
608
3ms
16 Aug 2026
Cubes
scpchicken
4,220
4ms
16 Aug 2026
Alphabetic Numbers
scpchicken
4,904
4ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
3,008
3ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,012
3ms
16 Aug 2026
Catalan Numbers
scpchicken
2,980
4ms
16 Aug 2026
Ascending Primes
scpchicken
620
4ms
16 Aug 2026
Arithmetic Numbers
scpchicken
45,338
4ms
16 Aug 2026
Abundant Numbers (Long)
scpchicken
1,218
3ms
16 Aug 2026
Abundant Numbers
scpchicken
217
4ms
16 Aug 2026
99 Bottles of Beer
scpchicken
12,192
4ms
16 Aug 2026
24 Game
scpchicken
13,802
4ms
16 Aug 2026
Hexdump
kg583
180
5ms
14 Aug 2026
Tower of Hanoi
Steffan153
🥇
65
4ms
13 Aug 2026
Arrows
Steffan153
🥇
106
6ms
12 Aug 2026
Rule 110
edsrzf
💎
104
9ms
11 Aug 2026
Rule 110
Steffan153
🥈
106
7ms
11 Aug 2026
Billiards
Steffan153
🥇
141
6ms
11 Aug 2026
Billiards
edsrzf
🥇
141
6ms
11 Aug 2026
Billiards
kg583
🥉
145
6ms
11 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,019
4ms
8 Aug 2026
Gijswijt’s Sequence
edsrzf
💎
85
5ms
8 Aug 2026
Odious Numbers (Long)
edsrzf
💎
49
4ms
5 Aug 2026
Evil Numbers (Long)
edsrzf
💎
49
4ms
5 Aug 2026
Ulam Sequence
edsrzf
🥈
78
46ms
3 Aug 2026
Ulam Sequence
Steffan153
💎
75
718ms
3 Aug 2026
Quine
JOrE20
35
4ms
1 Aug 2026
Pernicious Numbers (Long)
Steffan153
🥇
62
9ms
1 Aug 2026
Pernicious Numbers (Long)
edsrzf
🥇
62
9ms
1 Aug 2026
12 Days of Christmas
scpchicken
490
4ms
31 Jul 2026
Ulam Sequence
dokutan
🥉
786
4ms
31 Jul 2026
QR Decoder
edsrzf
🥈
177
4ms
31 Jul 2026