The
Snake
hole will go live in approximately
2 hours
. Why not try and solve it ahead of time?
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Nim
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Odious Numbers (Long)
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PalindromemordnilaP
Pangram Grep
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Pernicious Numbers (Long)
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Set
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Ten-pin Bowling
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Time Distance
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Transpose Sentence
Trinomial Triangle
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United States
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Zeckendorf Representation
Zodiac Signs
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λ
π
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φ
√2
𝑒
Apéry’s Constant
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Floyd-Steinberg Dithering
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Huffman Encoder
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Lyndon Factorization
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p-adic Expansion
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Tutorial
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D
Dart
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iogii
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Janet
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jq
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Python
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Raku
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sed
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Swift
Tcl
TeX
V
VimL
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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
259
32ms
5 days ago
Leap Years
albanian-laundromat
60
3ms
5 days ago
Tower of Hanoi
albanian-laundromat
70
4ms
8 days ago
Alphabetic Numbers
edsrzf
💎
180
6ms
11 days ago
Pernicious Numbers
albanian-laundromat
38
3ms
14 days ago
Niven Numbers
albanian-laundromat
47
3ms
14 days ago
Star Wars Opening Crawl
christos-cantina-security
🥉
373
38ms
15 days ago
Fibonacci
edsrzf
🥇
51
3ms
19 days ago
Niven Numbers (Long)
albanian-laundromat
66
22ms
20 days ago
Musical Chords
madex
🥉
197
5ms
25 days ago
Chess Move Validation
Steffan153
🥇
116
8ms
25 days ago
Chess Move Validation
edsrzf
🥇
116
8ms
25 days ago
Tutorial
zzh1996
47
4ms
31 Aug 2026
π
Steffan153
86
1,163ms
30 Aug 2026
Gray Code Encoder
JOrE20
🥇
46
8ms
29 Aug 2026
Gray Code Encoder
albanian-laundromat
🥇
46
8ms
29 Aug 2026
Zeckendorf Representation
error256
🥉
128
13ms
28 Aug 2026
Catalan’s Constant
Steffan153
💎
79
392ms
26 Aug 2026
Thue–Morse Constant
edsrzf
80
4ms
25 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,009
3ms
24 Aug 2026
Tutorial
quasar098
150
5ms
20 Aug 2026
Emojify
scpchicken
483
3ms
20 Aug 2026
DFA Simulator
scpchicken
909
5ms
20 Aug 2026
Day of Week
scpchicken
672
7ms
20 Aug 2026
CSS Colors
scpchicken
2,888
3ms
20 Aug 2026
Continued Fractions
scpchicken
🥈
766
4ms
20 Aug 2026
Connect Four
scpchicken
🥈
805
90ms
20 Aug 2026
Musical Chords
edsrzf
💎
128
24ms
19 Aug 2026
Tower of Hanoi
edsrzf
🥇
64
4ms
19 Aug 2026
Catalan Numbers
edsrzf
🥉
58
3ms
19 Aug 2026
Card Number Validation
scpchicken
586
4ms
16 Aug 2026
Calendar
scpchicken
🥉
1,176
4ms
16 Aug 2026
brainfuck
scpchicken
1,387
22ms
16 Aug 2026
Billiards
scpchicken
1,200
5ms
16 Aug 2026
Arabic to Roman
scpchicken
1,017
11ms
16 Aug 2026
Foo Fizz Buzz Bar
scpchicken
5,736
3ms
16 Aug 2026
Evil Numbers (Long)
scpchicken
1,967
3ms
16 Aug 2026
Evil Numbers
scpchicken
87
3ms
16 Aug 2026
Farey Sequence
scpchicken
4,371
3ms
16 Aug 2026
Fibonacci
scpchicken
151
3ms
16 Aug 2026
Factorial Factorisation
scpchicken
879
3ms
16 Aug 2026
Emirp Numbers (Long)
scpchicken
1,173
3ms
16 Aug 2026
Emirp Numbers
scpchicken
153
3ms
16 Aug 2026
Divisors
scpchicken
1,183
3ms
16 Aug 2026
Diamonds
scpchicken
1,120
3ms
16 Aug 2026
Collatz
scpchicken
3,243
3ms
16 Aug 2026
Christmas Trees
scpchicken
562
3ms
16 Aug 2026
Cubes
scpchicken
2,844
3ms
16 Aug 2026
Gijswijt’s Sequence
scpchicken
2,017
3ms
16 Aug 2026
Catalan’s Constant
scpchicken
1,020
3ms
16 Aug 2026
Catalan Numbers
scpchicken
2,889
3ms
16 Aug 2026
ASCII Table
scpchicken
292
3ms
16 Aug 2026
Ascending Primes
scpchicken
529
3ms
16 Aug 2026
Arithmetic Numbers
scpchicken
37,659
3ms
16 Aug 2026
Abundant Numbers (Long)
scpchicken
981
3ms
16 Aug 2026
Abundant Numbers
scpchicken
180
3ms
16 Aug 2026
99 Bottles of Beer
scpchicken
11,902
3ms
16 Aug 2026
24 Game
scpchicken
12,449
3ms
16 Aug 2026
12 Days of Christmas
scpchicken
679
3ms
15 Aug 2026
Fibonacci
albanian-laundromat
🥇
51
3ms
15 Aug 2026
Ulam Sequence
dokutan
🥉
374
3ms
14 Aug 2026
Hexagonal Spiral
bitsandbeyond
386
6ms
14 Aug 2026
24 Game
bitsandbeyond
🥈
535
9ms
13 Aug 2026
Tongue-twisters
scpchicken
529
3ms
9 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,017
3ms
8 Aug 2026
Tower of Hanoi
Steffan153
🥇
64
5ms
7 Aug 2026
Alphabetic Numbers
scpchicken
🥈
352
4ms
4 Aug 2026
Fizz Buzz
edsrzf
66
3ms
4 Aug 2026
Pernicious Numbers (Long)
edsrzf
🥇
55
21ms
2 Aug 2026
Evil Numbers (Long)
edsrzf
🥇
55
5ms
1 Aug 2026
Pernicious Numbers (Long)
Steffan153
🥇
55
34ms
1 Aug 2026
Evil Numbers (Long)
Steffan153
🥇
55
5ms
1 Aug 2026
Odious Numbers
edsrzf
🥉
46
3ms
1 Aug 2026
Odious Numbers (Long)
edsrzf
🥇
50
5ms
1 Aug 2026
Ulam Sequence
edsrzf
🥇
80
26ms
28 Jul 2026
Ulam Sequence
Steffan153
🥇
80
200ms
28 Jul 2026
Multitap Input
edsrzf
🥈
99
332ms
18 Jul 2026
Pernicious Numbers
JOrE20
69
3ms
12 Jul 2026
Gray Code Decoder
edsrzf
🥇
53
16ms
8 Jul 2026
Gray Code Decoder
Steffan153
🥇
53
15ms
8 Jul 2026
ASCII Table
edsrzf
135
3ms
7 Jul 2026
Lucky Numbers
edsrzf
124
9ms
6 Jul 2026
Alphabetic Numbers
retrohun
3,901
3ms
3 Jul 2026
Nim
albanian-laundromat
🥉
79
4ms
3 Jul 2026
Nim
edsrzf
🥇
76
4ms
2 Jul 2026
Transpose Sentence
Steffan153
🥈
86
19ms
2 Jul 2026
Nim
Steffan153
🥇
76
5ms
2 Jul 2026
γ
retrohun
1,009
3ms
23 Jun 2026
Partition Numbers
albanian-laundromat
243
33ms
23 Jun 2026
Gray Code Encoder
scpchicken
🥇
46
7ms
19 Jun 2026
Kaprekar Numbers
edsrzf
💎
126
2,917ms
17 Jun 2026
Arrows
edsrzf
💎
76
5ms
17 Jun 2026
Van Eck Sequence
xsot
🥇
66
5ms
14 Jun 2026
γ
edsrzf
💎
132
229ms
14 Jun 2026
Tic-tac-toe
edsrzf
🥇
75
77ms
13 Jun 2026
Seven Segment
edsrzf
134
3ms
8 Jun 2026
PalindromemordnilaP
Steffan153
🥇
60
12ms
2 Jun 2026
Connect Four
edsrzf
💎
197
81ms
1 Jun 2026
ln 2
retrohun
1,009
2ms
31 May 2026
γ
Haksell
1,007
3ms
31 May 2026