The
Snake
hole will go live in approximately
36 hours
. Why not try and solve it ahead of time?
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brainfuck
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Emirp Numbers (Long)
Emojify
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Evil Numbers (Long)
Factorial Factorisation
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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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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
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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
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Snake
Sphenic Numbers
Thue–Morse Constant
Turtle
Tutorial
Yellowstone Permutation
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ALGOL 68
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brainfuck
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C#
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Common Lisp
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D
Dart
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Forth
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Go
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Groovy
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iogii
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Janet
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jq
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K
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Prolog
Python
R
Raku
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Rust
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sed
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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
202
205ms
39 hours ago
Leap Years
albanian-laundromat
50
2ms
4 days ago
Foo Fizz Buzz Bar
albanian-laundromat
105
3ms
4 days ago
Tower of Hanoi
albanian-laundromat
66
3ms
7 days ago
Game of Life
Steffan153
💎
130
51ms
11 days ago
Multitap Input
edsrzf
💎
162
4ms
12 days ago
Multitap Input
albanian-laundromat
🥈
166
3ms
12 days ago
Gijswijt’s Sequence
madex
116
977ms
12 days ago
Gijswijt’s Sequence
Zazerg
121
376ms
13 days ago
Gijswijt’s Sequence
blaztoma
112
3ms
13 days ago
Arrows
christos-cantina-security
288
2ms
14 days ago
Pernicious Numbers
albanian-laundromat
🥇
42
2ms
14 days ago
Pernicious Numbers
JOrE20
🥇
42
2ms
14 days ago
Pernicious Numbers
CornerMercury
🥇
42
2ms
14 days ago
Gijswijt’s Sequence
GolfingSuccess
2,015
2ms
15 days ago
Gijswijt’s Sequence
tomh1012
243
1,302ms
15 days ago
Gijswijt’s Sequence
Steffan153
💎
104
2ms
15 days ago
Gijswijt’s Sequence
CornerMercury
2,015
2ms
15 days ago
Partition Numbers
Steffan153
🥇
84
3ms
20 days ago
Pangram Grep
Steffan153
🥇
102
3ms
21 days ago
√2
albanian-laundromat
156
392ms
22 days ago
Lucky Numbers
albanian-laundromat
118
1,272ms
22 days ago
Chess Move Validation
edsrzf
🥇
146
4ms
24 days ago
Chess Move Validation
Steffan153
🥇
146
3ms
24 days ago
Fibonacci
Nyfii
48
3ms
25 days ago
Tutorial
zzh1996
87
3ms
1 Sep 2026
Chess Move Validation
albanian-laundromat
🥉
168
4ms
1 Sep 2026
Chess Move Validation
Nyfii
170
3ms
1 Sep 2026
Prime Numbers (Long)
Florian-Mt
81
1,349ms
26 Aug 2026
Prime Numbers
Florian-Mt
80
2ms
26 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,018
2ms
24 Aug 2026
Morse Encoder
madex
🥉
202
3ms
22 Aug 2026
Tutorial
quasar098
179
3ms
20 Aug 2026
Emojify
scpchicken
516
2ms
20 Aug 2026
DFA Simulator
scpchicken
1,159
9ms
20 Aug 2026
Day of Week
scpchicken
916
5ms
20 Aug 2026
CSS Colors
scpchicken
3,813
3ms
20 Aug 2026
Continued Fractions
scpchicken
744
3ms
20 Aug 2026
Connect Four
scpchicken
690
21ms
20 Aug 2026
Smith Numbers
albanian-laundromat
156
1,564ms
18 Aug 2026
Fizz Buzz
Nyfii
🥇
72
2ms
17 Aug 2026
Card Number Validation
scpchicken
568
3ms
16 Aug 2026
Calendar
scpchicken
🥉
911
4ms
16 Aug 2026
brainfuck
scpchicken
1,168
258ms
16 Aug 2026
Billiards
scpchicken
1,044
3ms
16 Aug 2026
Arabic to Roman
scpchicken
855
8ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
6,733
2ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
2,465
2ms
16 Aug 2026
Evil Numbers
scpchicken
109
2ms
16 Aug 2026
Farey Sequence
scpchicken
5,143
2ms
16 Aug 2026
Fibonacci
scpchicken
179
2ms
16 Aug 2026
Factorial Factorisation
scpchicken
877
2ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,410
2ms
16 Aug 2026
Emirp Numbers
scpchicken
186
2ms
16 Aug 2026
Divisors
scpchicken
1,280
2ms
16 Aug 2026
Diamonds
scpchicken
1,206
2ms
16 Aug 2026
Collatz
scpchicken
4,240
2ms
16 Aug 2026
Christmas Trees
scpchicken
614
2ms
16 Aug 2026
Cubes
scpchicken
2,952
2ms
16 Aug 2026
Alphabetic Numbers
scpchicken
4,910
2ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
3,014
2ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,018
2ms
16 Aug 2026
Catalan Numbers
scpchicken
2,986
2ms
16 Aug 2026
ASCII Table
scpchicken
307
2ms
16 Aug 2026
Ascending Primes
scpchicken
626
2ms
16 Aug 2026
Arithmetic Numbers
scpchicken
45,344
2ms
16 Aug 2026
Abundant Numbers (Long)
scpchicken
1,224
2ms
16 Aug 2026
Abundant Numbers
scpchicken
223
2ms
16 Aug 2026
99 Bottles of Beer
scpchicken
12,198
2ms
16 Aug 2026
24 Game
scpchicken
13,808
2ms
16 Aug 2026
Seven Segment
bitsandbeyond
170
2ms
16 Aug 2026
12 Days of Christmas
scpchicken
652
3ms
15 Aug 2026
Hexagonal Spiral
bitsandbeyond
252
53ms
14 Aug 2026
Tower of Hanoi
Steffan153
🥇
62
3ms
13 Aug 2026
Gray Code Encoder
Steffan153
🥇
118
7ms
12 Aug 2026
N Queens
edsrzf
💎
136
4ms
10 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,026
2ms
8 Aug 2026
Sierpiński Triangle
albanian-laundromat
77
2ms
6 Aug 2026
brainfuck
KasperKivimaeki
263
1,341ms
4 Aug 2026
Ulam Sequence
Steffan153
💎
83
1,600ms
3 Aug 2026
Ulam Sequence
dokutan
🥉
290
2ms
31 Jul 2026
Kolakoski Constant
Steffan153
💎
128
353ms
28 Jul 2026
Kolakoski Constant
albanian-laundromat
🥈
130
314ms
28 Jul 2026
Fibonacci
dokutan
56
2ms
27 Jul 2026
Langton’s Ant
albanian-laundromat
253
37ms
26 Jul 2026
Ulam Sequence
albanian-laundromat
🥈
95
1,458ms
26 Jul 2026
Hilbert Curve
albanian-laundromat
💎
323
6ms
23 Jul 2026
λ
scpchicken
556
3ms
23 Jul 2026
Card Number Validation
JayXon
💎
112
2ms
21 Jul 2026
Card Number Validation
edsrzf
🥈
115
2ms
21 Jul 2026
Rectangle Fill
albanian-laundromat
269
88ms
19 Jul 2026
Lucky Numbers
JayXon
💎
70
45ms
18 Jul 2026
Snake
albanian-laundromat
189
104ms
16 Jul 2026
Lucky Numbers
Steffan153
🥈
71
44ms
15 Jul 2026
Nim
Steffan153
🥇
141
3ms
10 Jul 2026
Factorial Factorisation
DialFrost
135
7ms
5 Jul 2026
Nim
CaedenHarper
159
3ms
4 Jul 2026
Alphabetic Numbers
retrohun
3,910
2ms
3 Jul 2026
Ascending Primes
Yewzir
180
3,729ms
2 Jul 2026
Nim
albanian-laundromat
🥇
141
3ms
1 Jul 2026