The
Snake
hole will go live in approximately
5 days
. Why not try and solve it ahead of time?
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Cheevos
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12 Days of Christmas
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99 Bottles of Beer
Abundant Numbers
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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
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><>
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
Leap Years
albanian-laundromat
63
366ms
30 mins ago
Star Wars Opening Crawl
tomh1012
497
393ms
12 hours ago
N Queens
tomh1012
337
1,238ms
12 hours ago
SI Units
namelessiw
🥈
511
499ms
13 hours ago
Nim
tomh1012
178
484ms
35 hours ago
Day of Week
bpharaldsson
65
565ms
37 hours ago
Gray Code Encoder
bpharaldsson
🥇
66
534ms
37 hours ago
Tongue-twisters
namelessiw
302
403ms
38 hours ago
Odious Numbers
qrakhen
68
390ms
38 hours ago
Reverse Polish Notation
namelessiw
🥉
157
405ms
40 hours ago
Happy Numbers (Long)
bpharaldsson
133
371ms
44 hours ago
Tower of Hanoi
albanian-laundromat
71
380ms
2 days ago
Nim
codewrite
190
446ms
2 days ago
Divisors
codewrite
89
387ms
2 days ago
Tower of Hanoi
codewrite
124
408ms
2 days ago
Reverse Polish Notation
bpharaldsson
253
457ms
2 days ago
Reverse Polish Notation
codewrite
220
401ms
2 days ago
Lucky Numbers
bpharaldsson
144
452ms
2 days ago
Sudoku (Fill-in)
bpharaldsson
1,242
454ms
2 days ago
Sudoku
bpharaldsson
1,186
444ms
2 days ago
Scrambled Sort
michelebastione
258
488ms
3 days ago
Number Spiral
codewrite
246
443ms
3 days ago
Prime Numbers
codewrite
148
429ms
3 days ago
Lucky Tickets
codewrite
327
399ms
3 days ago
Prime Numbers (Long)
codewrite
126
438ms
3 days ago
Calendar
codewrite
308
436ms
3 days ago
Trinomial Triangle
codewrite
208
433ms
3 days ago
Chess Move Validation
codewrite
212
458ms
3 days ago
Topological Sort
codewrite
627
456ms
3 days ago
Rule 110
codewrite
253
420ms
3 days ago
Quine
Nico-Posada
🥇
73
324ms
3 days ago
Gray Code Decoder
michelebastione
90
415ms
4 days ago
Hilbert Curve
namelessiw
326
437ms
4 days ago
Day of Week
albanian-laundromat
69
394ms
5 days ago
Leap Years
michelebastione
65
397ms
5 days ago
Star Wars Opening Crawl
albanian-laundromat
379
407ms
5 days ago
Tutorial
bpharaldsson
372
447ms
6 days ago
Ellipse Perimeters
bpharaldsson
167
424ms
6 days ago
Look and Say
bpharaldsson
157
394ms
6 days ago
Calendar
bpharaldsson
309
405ms
6 days ago
Emirp Numbers (Long)
qrakhen
178
409ms
6 days ago
Ulam Sequence
bpharaldsson
209
512ms
6 days ago
Lucky Tickets
bpharaldsson
217
1,237ms
6 days ago
Game of Life
Steffan153
🥈
99
412ms
7 days ago
Rock-paper-scissors-Spock-lizard
namelessiw
🥈
238
397ms
7 days ago
Fibonacci
Nyfii
52
368ms
7 days ago
Game of Life
bpharaldsson
340
497ms
7 days ago
Kolakoski Sequence
tomh1012
113
400ms
7 days ago
Prime Numbers (Long)
bpharaldsson
82
388ms
7 days ago
Gray Code Decoder
bpharaldsson
100
369ms
7 days ago
Intersection
bpharaldsson
263
458ms
7 days ago
Time Distance
bpharaldsson
403
454ms
7 days ago
Happy Numbers
bpharaldsson
132
397ms
7 days ago
Tutorial
zzh1996
73
451ms
8 days ago
Repeating Decimals
tomh1012
423
396ms
8 days ago
Fibonacci
Europe2048
54
372ms
9 days ago
Set
christos-cantina-security
285
432ms
9 days ago
Poker
christos-cantina-security
703
500ms
9 days ago
24 Game
christos-cantina-security
587
708ms
9 days ago
Musical Chords
christos-cantina-security
458
441ms
9 days ago
Card Number Validation
christos-cantina-security
154
387ms
9 days ago
99 Bottles of Beer
bpharaldsson
358
401ms
9 days ago
SI Units
bpharaldsson
948
473ms
9 days ago
Pernicious Numbers
albanian-laundromat
🥇
55
388ms
9 days ago
Minesweeper
bpharaldsson
272
463ms
9 days ago
Arrows
Steffan153
106
445ms
10 days ago
Pernicious Numbers
CornerMercury
🥇
55
360ms
10 days ago
Abundant Numbers (Long)
bpharaldsson
104
375ms
10 days ago
Scrambled Sort
bpharaldsson
142
431ms
10 days ago
Niven Numbers (Long)
bpharaldsson
89
348ms
10 days ago
Card Number Validation
bpharaldsson
136
429ms
10 days ago
Tongue-twisters
bpharaldsson
460
391ms
10 days ago
Foo Fizz Buzz Bar
bpharaldsson
133
355ms
10 days ago
12 Days of Christmas
bpharaldsson
588
399ms
10 days ago
Sudoku
codewrite
1,258
427ms
11 days ago
Sudoku (Fill-in)
codewrite
883
471ms
11 days ago
Musical Chords
namelessiw
161
488ms
12 days ago
N Queens
codewrite
347
425ms
12 days ago
Minesweeper
codewrite
286
429ms
12 days ago
Fibonacci
GolfingSuccess
🥇
51
389ms
13 days ago
Zodiac Signs
namelessiw
180
482ms
13 days ago
ASCII Table
bpharaldsson
187
422ms
13 days ago
Christmas Trees
bpharaldsson
171
429ms
13 days ago
Transpose Sentence
bpharaldsson
178
431ms
13 days ago
Odious Numbers (Long)
bpharaldsson
69
423ms
13 days ago
Pangram Grep
bpharaldsson
96
369ms
13 days ago
Seven Segment
bpharaldsson
251
432ms
13 days ago
Odious Numbers
bpharaldsson
67
420ms
13 days ago
Topological Sort
bpharaldsson
299
469ms
13 days ago
Arrows
bpharaldsson
248
479ms
13 days ago
United States
bpharaldsson
404
419ms
13 days ago
Odious Numbers
michelebastione
64
390ms
13 days ago
Odious Numbers (Long)
michelebastione
65
411ms
13 days ago
Gray Code Encoder
michelebastione
🥇
66
408ms
14 days ago
Niven Numbers
bpharaldsson
61
377ms
14 days ago
Cubes
bpharaldsson
352
408ms
14 days ago
Medal Tally
bpharaldsson
255
461ms
14 days ago
Hexdump
bpharaldsson
287
382ms
14 days ago
Emojify
bpharaldsson
429
413ms
14 days ago
Intersection
1234567Yang
585
374ms
15 days ago