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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N Queens
Nim
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Niven Numbers (Long)
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Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
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Pernicious Numbers (Long)
Poker
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Quine
Recamán
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Reversi
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Rule 110
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Set
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Ten-pin Bowling
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Time Distance
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Transpose Sentence
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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
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Crossword
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CSS Grid
Dragon Curve
Ellipse Perimeters
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Floyd-Steinberg Dithering
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Highly Composite Numbers
Huffman Encoder
Langton’s Ant
Lyndon Factorization
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Numbrix
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p-adic Expansion
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Turtle
Tutorial
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><>
ALGOL 68
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AWK
Bash
BASIC
Berry
brainfuck
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C#
C++
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Coconut
Common Lisp
Crystal
D
Dart
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Forth
Fortran
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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
Julia
K
Kotlin
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Nim
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PowerShell
Prolog
Python
R
Raku
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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
Bytes
Time
Submitted
Snake
madex
167
1,073ms
27 hours ago
Repeating Decimals
jipsong
174
4,027ms
11 days ago
Day of Week
jipsong
51
1,609ms
14 days ago
Ordinal Numbers
jipsong
87
1,169ms
15 days ago
Pernicious Numbers (Long)
jipsong
64
1,045ms
25 days ago
Niven Numbers (Long)
jipsong
48
975ms
31 Aug 2026
Look and Say
jipsong
78
977ms
31 Aug 2026
Thue–Morse Constant
HumanoidCPU
1,011
913ms
24 Aug 2026
Tutorial
quasar098
127
1,872ms
20 Aug 2026
Christmas Trees
scpchicken
66
1,195ms
19 Aug 2026
Hexagonal Spiral
bitsandbeyond
246
1,567ms
14 Aug 2026
Yellowstone Permutation
HumanoidCPU
4,023
1,130ms
8 Aug 2026
φ
jipsong
60
956ms
2 Aug 2026
√2
jipsong
56
900ms
1 Aug 2026
Ulam Sequence
madex
113
1,401ms
31 Jul 2026
Gray Code Decoder
jipsong
47
1,292ms
22 Jul 2026
Gray Code Encoder
jipsong
49
1,387ms
21 Jul 2026
Ulam Sequence
Haksell
1,105
1,766ms
31 May 2026
Tutorial
Haksell
69
2,682ms
31 May 2026
Prime Numbers
madex
52
1,364ms
18 May 2026
Tutorial
Orsailius
79
3,052ms
16 May 2026
Evil Numbers
Orsailius
65
1,387ms
16 May 2026
Ulam Sequence
HumanoidCPU
1,105
901ms
12 May 2026
Gray Code Encoder
HumanoidCPU
55
1,460ms
11 May 2026
Ulam Sequence
Shanethegamer
1,105
1,178ms
11 May 2026
Apéry’s Constant
raphaelimahorn
1,011
1,216ms
11 May 2026
Transpose Sentence
WatMan77
141
1,642ms
10 May 2026
Smooth Numbers
madex
124
3,771ms
7 May 2026
Prime Numbers
Steffan153
49
1,525ms
6 May 2026
Prime Numbers (Long)
Steffan153
51
1,766ms
6 May 2026
Divisors
DialFrost
56
1,565ms
6 May 2026
Divisors
Steffan153
56
1,527ms
6 May 2026
Abundant Numbers
Steffan153
52
1,331ms
6 May 2026
Abundant Numbers (Long)
Steffan153
58
1,509ms
6 May 2026
Pernicious Numbers
Steffan153
37
1,433ms
6 May 2026
Pernicious Numbers (Long)
Steffan153
53
1,503ms
6 May 2026
Odious Numbers (Long)
Steffan153
48
1,542ms
6 May 2026
Evil Numbers (Long)
Steffan153
48
1,614ms
6 May 2026
Odious Numbers
Steffan153
41
1,445ms
6 May 2026
Evil Numbers
Steffan153
40
1,592ms
6 May 2026
Niven Numbers (Long)
Steffan153
48
1,547ms
6 May 2026
Niven Numbers
Steffan153
42
1,383ms
6 May 2026
Fibonacci
Steffan153
43
1,407ms
6 May 2026
Fizz Buzz
Steffan153
71
1,655ms
6 May 2026
Evil Numbers
sisyphus-ppcg
40
1,466ms
6 May 2026
Niven Numbers (Long)
HumanoidCPU
61
1,164ms
5 May 2026
Niven Numbers
HumanoidCPU
59
1,099ms
5 May 2026
Nim
madex
131
1,626ms
30 Apr 2026
Taxicab Numbers
madex
152
1,323ms
29 Apr 2026
Niven Numbers
sisyphus-ppcg
45
1,049ms
27 Apr 2026
Pernicious Numbers
sisyphus-ppcg
39
1,005ms
27 Apr 2026
Odious Numbers
sisyphus-ppcg
44
1,085ms
27 Apr 2026
Dragon Curve
HumanoidCPU
10,285
1,307ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,285
1,160ms
23 Apr 2026
Arithmetic Numbers
HumanoidCPU
83
1,896ms
21 Apr 2026
Alphabetic Numbers
Shanethegamer
3,907
1,218ms
19 Apr 2026
Tower of Hanoi
scpchicken
60
1,495ms
19 Apr 2026
Prime Numbers (Long)
madex
56
1,393ms
17 Apr 2026
ln 2
Matter1024
98
1,162ms
7 Apr 2026
Day of Week
Matter1024
57
2,056ms
7 Apr 2026
United States
madex
181
2,774ms
4 Apr 2026
τ
Matter1024
107
1,334ms
4 Apr 2026
𝑒
Matter1024
82
1,328ms
4 Apr 2026
π
Matter1024
107
1,304ms
4 Apr 2026
√2
Matter1024
73
2,440ms
4 Apr 2026
φ
Matter1024
90
1,358ms
3 Apr 2026
Pernicious Numbers
madex
53
1,180ms
29 Mar 2026
Gray Code Encoder
madex
62
1,455ms
27 Mar 2026
Gray Code Decoder
madex
59
1,634ms
27 Mar 2026
Tongue-twisters
dokutan
441
1,461ms
15 Mar 2026
Fractions
madex
144
2,804ms
14 Mar 2026
Alphabetic Numbers
HumanoidCPU
3,907
1,063ms
6 Mar 2026
Intersection
Matter1024
136
2,205ms
3 Mar 2026
Quine
LostSyntax21
52
2,293ms
23 Feb 2026
Tutorial
Matter1024
45
3,008ms
16 Feb 2026
Fizz Buzz
dokutan
102
1,839ms
15 Feb 2026
Tutorial
CosmicRaichu
75
3,033ms
3 Feb 2026
Tutorial
FortuiteMan
127
3,146ms
3 Feb 2026
Fibonacci
CornerMercury
45
1,329ms
30 Jan 2026
π
Andrey2001
1,011
1,201ms
25 Jan 2026
Tutorial
Mefred
127
3,429ms
15 Jan 2026
𝑒
JOrE20
212
1,833ms
5 Jan 2026
Prime Numbers (Long)
Florian-Mt
55
1,672ms
28 Dec 2025
Prime Numbers
Florian-Mt
53
1,513ms
28 Dec 2025
Arithmetic Numbers
sukemaru-injp
83
1,838ms
12 Dec 2025
12 Days of Christmas
kurkale6ka
2,381
1,208ms
10 Dec 2025
ASCII Table
HumanoidCPU
284
1,158ms
7 Dec 2025
Quine
snoozingnewt
52
1,258ms
30 Nov 2025
Tower of Hanoi
KatieLG
4,095
1,287ms
30 Nov 2025
𝑒
BREMAUCY
1,011
1,161ms
27 Nov 2025
Taxicab Numbers
HumanoidCPU
4,172
1,202ms
27 Nov 2025
Taxicab Numbers
Shanethegamer
4,172
1,205ms
26 Nov 2025
Mandelbrot
JOrE20
688
1,296ms
24 Nov 2025
Hilbert Curve
JOrE20
922
1,404ms
24 Nov 2025
Zeckendorf Representation
bitsandbeyond
134
1,395ms
22 Nov 2025
Fibonacci
Zach1031
61
1,696ms
15 Nov 2025
Leap Years
WatMan77
55
1,447ms
14 Nov 2025
Kolakoski Sequence
HumanoidCPU
2,008
1,168ms
12 Nov 2025
Christmas Trees
JOrE20
322
1,318ms
11 Nov 2025
Rijndael S-box
JOrE20
780
1,333ms
10 Nov 2025