The
Snake
hole will go live in approximately
2 days
. Why not try and solve it ahead of time?
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brainfuck
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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
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Happy Numbers
Happy Numbers (Long)
Hexdump
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Intersection
Inventory Sequence
ISBN
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Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
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Minesweeper
Morse Decoder
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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
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Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
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ALGOL 68
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AWK
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brainfuck
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C#
C++
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Coconut
Common Lisp
Crystal
D
Dart
Elixir
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Factor
Forth
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Go
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Groovy
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iogii
J
Janet
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jq
Julia
K
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PowerShell
Prolog
Python
R
Raku
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Ruby
Rust
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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
Chars
Time
Submitted
Snake
madex
99
108ms
22 hours ago
Pernicious Numbers
snoozingnewt
14
87ms
46 hours ago
Fizz Buzz
JOrE20
35
101ms
12 days ago
Thue–Morse Constant
HumanoidCPU
1,004
96ms
24 Aug 2026
Tutorial
quasar098
76
109ms
20 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,012
140ms
8 Aug 2026
Ulam Sequence
HumanoidCPU
1,094
124ms
12 May 2026
Ulam Sequence
Shanethegamer
1,094
112ms
11 May 2026
Nim
plcc0
29
118ms
4 May 2026
Dragon Curve
HumanoidCPU
10,274
129ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,274
125ms
23 Apr 2026
Alphabetic Numbers
Shanethegamer
3,896
106ms
19 Apr 2026
Tower of Hanoi
scpchicken
51
117ms
19 Apr 2026
Fizz Buzz
madex
42
127ms
14 Mar 2026
Alphabetic Numbers
HumanoidCPU
3,896
107ms
6 Mar 2026
Fizz Buzz
dokutan
35
131ms
15 Feb 2026
Tutorial
FortuiteMan
76
186ms
3 Feb 2026
π
plcc0
33
166ms
31 Jan 2026
Scrambled Sort
plcc0
20
127ms
31 Jan 2026
12 Days of Christmas
plcc0
383
119ms
31 Jan 2026
99 Bottles of Beer
plcc0
179
132ms
31 Jan 2026
Partition Numbers
plcc0
41
118ms
31 Jan 2026
Niven Numbers
plcc0
18
104ms
31 Jan 2026
Lucky Numbers
plcc0
30
129ms
31 Jan 2026
Fizz Buzz
plcc0
35
107ms
31 Jan 2026
Divisors
plcc0
22
119ms
31 Jan 2026
Diamonds
plcc0
33
115ms
31 Jan 2026
Collatz
plcc0
30
140ms
31 Jan 2026
Sphenic Numbers
plcc0
17
150ms
31 Jan 2026
Semiprime Numbers
plcc0
13
136ms
31 Jan 2026
ASCII Table
plcc0
60
118ms
31 Jan 2026
Card Number Validation
plcc0
30
120ms
31 Jan 2026
Leap Years
plcc0
25
119ms
31 Jan 2026
Evil Numbers
plcc0
12
115ms
31 Jan 2026
Quine
plcc0
8
125ms
31 Jan 2026
Pangram Grep
plcc0
18
139ms
31 Jan 2026
π
Andrey2001
1,004
107ms
25 Jan 2026
Tutorial
Mefred
76
164ms
23 Jan 2026
𝑒
JOrE20
1,004
112ms
5 Jan 2026
Tutorial
HumanoidCPU
23
172ms
1 Jan 2026
Tutorial
kurkale6ka
26
162ms
11 Dec 2025
ASCII Table
HumanoidCPU
274
106ms
7 Dec 2025
Evil Numbers (Long)
aditsu
14
132ms
30 Nov 2025
Evil Numbers
aditsu
12
104ms
30 Nov 2025
Odious Numbers (Long)
aditsu
12
127ms
30 Nov 2025
Odious Numbers
aditsu
11
94ms
30 Nov 2025
Tower of Hanoi
KatieLG
3,578
111ms
30 Nov 2025
Taxicab Numbers
HumanoidCPU
4,161
133ms
27 Nov 2025
Taxicab Numbers
Shanethegamer
4,161
115ms
26 Nov 2025
Smooth Numbers
GolfingSuccess
28
575ms
24 Nov 2025
Diamonds
aditsu
45
112ms
23 Nov 2025
ASCII Table
aditsu
56
117ms
23 Nov 2025
Continued Fractions
GolfingSuccess
47
147ms
21 Nov 2025
Kolakoski Sequence
HumanoidCPU
2,001
103ms
12 Nov 2025
Tower of Hanoi
HumanoidCPU
3,578
108ms
6 Nov 2025
Tower of Hanoi
GolfingSuccess
28
104ms
30 Oct 2025
Tower of Hanoi
Shanethegamer
3,578
104ms
30 Oct 2025
Look and Say
plcc0
12
97ms
25 Oct 2025
Prime Numbers
plcc0
9
95ms
24 Oct 2025
Prime Numbers (Long)
plcc0
10
111ms
24 Oct 2025
Ellipse Perimeters
Shanethegamer
35
105ms
20 Oct 2025
Tutorial
Babafaba
76
174ms
15 Oct 2025
Prime Numbers (Long)
snoozingnewt
10
113ms
9 Oct 2025
Prime Numbers
snoozingnewt
9
106ms
9 Oct 2025
Reverse Polish Notation
BREMAUCY
6
131ms
5 Oct 2025
Mandelbrot
aditsu
63
1,306ms
21 Sep 2025
Set
aditsu
28
179ms
21 Sep 2025
Tutorial
snoozingnewt
23
170ms
15 Sep 2025
Fizz Buzz
snoozingnewt
35
106ms
14 Sep 2025
Fizz Buzz
CaedenHarper
35
113ms
28 Aug 2025
Tutorial
Vexxter9
82
167ms
21 Aug 2025
Quine
aditsu
8
114ms
20 Aug 2025
Hexagonal Spiral
HumanoidCPU
1,136
113ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
393
99ms
18 Aug 2025
Hilbert Curve
HumanoidCPU
2,049
107ms
18 Aug 2025
Abundant Numbers (Long)
HumanoidCPU
965
107ms
18 Aug 2025
Polyominoes
HumanoidCPU
3,565
109ms
18 Aug 2025
Recamán
HumanoidCPU
898
101ms
18 Aug 2025
Rule 110
HumanoidCPU
10,101
138ms
18 Aug 2025
Kaprekar Numbers
HumanoidCPU
441
98ms
18 Aug 2025
Happy Numbers
HumanoidCPU
108
103ms
18 Aug 2025
Happy Numbers (Long)
HumanoidCPU
553
114ms
18 Aug 2025
Emirp Numbers (Long)
HumanoidCPU
1,157
106ms
18 Aug 2025
Catalan Numbers
HumanoidCPU
2,873
113ms
18 Aug 2025
Tongue-twisters
HumanoidCPU
524
122ms
18 Aug 2025
Van Eck Sequence
HumanoidCPU
2,556
126ms
17 Aug 2025
Abundant Numbers
HumanoidCPU
164
119ms
16 Aug 2025
Look and Say
HumanoidCPU
1,280
118ms
15 Aug 2025
Farey Sequence
HumanoidCPU
4,355
118ms
15 Aug 2025
Diamonds
HumanoidCPU
1,104
123ms
14 Aug 2025
Niven Numbers
HumanoidCPU
92
114ms
14 Aug 2025
Lucky Numbers
HumanoidCPU
4,821
124ms
14 Aug 2025
Inventory Sequence
HumanoidCPU
2,624
128ms
14 Aug 2025
Gijswijt’s Sequence
HumanoidCPU
2,001
141ms
14 Aug 2025
Smith Numbers
HumanoidCPU
1,825
130ms
14 Aug 2025
Arithmetic Numbers
HumanoidCPU
37,643
188ms
14 Aug 2025
Odious Numbers (Long)
HumanoidCPU
1,946
129ms
14 Aug 2025
Evil Numbers (Long)
HumanoidCPU
1,951
115ms
14 Aug 2025
N Queens
HumanoidCPU
1,247
114ms
14 Aug 2025
Pernicious Numbers (Long)
HumanoidCPU
20,663
173ms
14 Aug 2025