The
Nim
hole will go live in approximately
23 hours
. Why not try and solve it ahead of time?
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12 Days of Christmas
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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
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
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Multitap Input
Musical Chords
N Queens
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
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
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Ulam Sequence
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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
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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
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
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
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
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Ulam Sequence
Hole
Golfer
Bytes
Time
Submitted
Leyland Numbers
JOrE20
68
110ms
3 hours ago
Nim
scpchicken
69
124ms
25 hours ago
Fizz Buzz
yzhs
44
116ms
4 days ago
Musical Chords
Natanaelel
476
188ms
4 days ago
Card Number Validation
scpchicken
59
226ms
4 days ago
99 Bottles of Beer
egu555
321
200ms
5 days ago
Pernicious Numbers (Long)
rollershutter
47
222ms
5 days ago
Odious Numbers (Long)
rollershutter
41
140ms
5 days ago
Odious Numbers
rollershutter
39
138ms
5 days ago
Evil Numbers (Long)
rollershutter
42
184ms
5 days ago
Evil Numbers
rollershutter
40
185ms
5 days ago
Abundant Numbers (Long)
DialFrost
43
321ms
5 days ago
γ
retrohun
1,008
109ms
6 days ago
√2
scpchicken
49
228ms
8 days ago
φ
scpchicken
30
455ms
8 days ago
√2
Natanaelel
🥇
32
298ms
9 days ago
Mahjong
scpchicken
💎
169
352ms
10 days ago
Fibonacci
egu555
23
148ms
11 days ago
Pangram Grep
scpchicken
34
137ms
13 days ago
12 Days of Christmas
scpchicken
426
169ms
13 days ago
Arabic to Roman
scpchicken
92
312ms
13 days ago
Ascending Primes
scpchicken
45
117ms
13 days ago
Rock-paper-scissors-Spock-lizard
scpchicken
195
167ms
13 days ago
Farey Sequence
scpchicken
58
137ms
13 days ago
Partition Numbers
scpchicken
93
365ms
13 days ago
Musical Chords
scpchicken
147
227ms
14 days ago
Kaprekar Numbers
scpchicken
🥈
124
4,094ms
14 days ago
Tic-tac-toe
edsrzf
56
181ms
16 days ago
Maze
Natanaelel
🥈
123
4,720ms
18 days ago
Repeating Decimals
codereport
48
297ms
20 days ago
SI Units
codereport
🥈
374
640ms
22 days ago
Poker
JOrE20
1,434
302ms
23 days ago
ln 2
scpchicken
57
173ms
24 days ago
λ
scpchicken
289
239ms
24 days ago
Poker
HumanoidCPU
1,663
369ms
25 days ago
Gijswijt’s Sequence
scpchicken
66
2,731ms
26 days ago
Fractions
scpchicken
32
131ms
26 days ago
Catalan Numbers
scpchicken
33
122ms
26 days ago
Poker
BREMAUCY
1,089
282ms
27 days ago
Poker
CornerMercury
698
297ms
27 days ago
Poker
madex
446
238ms
27 days ago
Poker
Haksell
502
280ms
1 Jun 2026
Poker
Natanaelel
491
239ms
1 Jun 2026
Foo Fizz Buzz Bar
scpchicken
65
143ms
1 Jun 2026
Poker
aksyristos
2,690
383ms
1 Jun 2026
Connect Four
scpchicken
💎
159
677ms
1 Jun 2026
Connect Four
madex
🥈
163
1,699ms
31 May 2026
ln 2
retrohun
1,008
144ms
31 May 2026
γ
Haksell
1,008
111ms
31 May 2026
Topological Sort
scpchicken
90
315ms
30 May 2026
Topological Sort
Natanaelel
91
259ms
28 May 2026
Zeckendorf Representation
Natanaelel
69
194ms
27 May 2026
Zeckendorf Representation
GrayJoKing
🥇
60
253ms
26 May 2026
ISBN
GrayJoKing
🥇
47
163ms
26 May 2026
Fizz Buzz
denkyuu1
44
118ms
25 May 2026
Odious Numbers (Long)
retrohun
34
126ms
25 May 2026
Evil Numbers
retrohun
33
117ms
25 May 2026
Leap Years
scpchicken
36
147ms
23 May 2026
Alphabetic Numbers
CaedenHarper
3,900
135ms
21 May 2026
Repeating Decimals
oaiqjuy
53
185ms
21 May 2026
Minesweeper
Natanaelel
🥉
147
382ms
21 May 2026
ROT13
edsrzf
🥇
39
120ms
21 May 2026
Calendar
Natanaelel
🥉
142
230ms
20 May 2026
QR Decoder
Natanaelel
344
167ms
20 May 2026
Odious Numbers
scpchicken
32
133ms
20 May 2026
Odious Numbers (Long)
scpchicken
33
145ms
20 May 2026
Trinomial Triangle
scpchicken
🥇
40
126ms
20 May 2026
Pascal’s Triangle
scpchicken
🥇
26
129ms
20 May 2026
Divisors
scpchicken
🥇
28
116ms
20 May 2026
Fizz Buzz
scpchicken
🥇
41
107ms
20 May 2026
Transpose Sentence
Natanaelel
🥇
33
170ms
19 May 2026
Emirp Numbers (Long)
scpchicken
🥉
42
172ms
19 May 2026
Taxicab Numbers
scpchicken
75
368ms
19 May 2026
Factorial Factorisation
scpchicken
584
715ms
19 May 2026
Alphabetic Numbers
scpchicken
278
141ms
19 May 2026
Alphabetic Numbers
Natanaelel
🥈
166
196ms
19 May 2026
Leyland Numbers
GrayJoKing
52
265ms
19 May 2026
Divisors
Orsailius
40
151ms
19 May 2026
Leap Years
Steffan153
🥇
28
173ms
19 May 2026
Prime Numbers
madex
25
108ms
18 May 2026
Polyominoes
scpchicken
335
375ms
18 May 2026
Tic-tac-toe
scpchicken
74
229ms
18 May 2026
Star Wars GPT
scpchicken
246
247ms
18 May 2026
Zodiac Signs
scpchicken
126
160ms
18 May 2026
Forsyth–Edwards Notation
scpchicken
90
149ms
17 May 2026
Odious Numbers
HumanoidCPU
48
121ms
17 May 2026
Odious Numbers (Long)
HumanoidCPU
49
135ms
17 May 2026
Evil Numbers
HumanoidCPU
46
128ms
17 May 2026
Evil Numbers (Long)
HumanoidCPU
47
132ms
17 May 2026
Polyominoes
Natanaelel
🥉
213
2,041ms
16 May 2026
Rock-paper-scissors-Spock-lizard
Natanaelel
164
175ms
15 May 2026
DFA Simulator
Natanaelel
134
243ms
15 May 2026
Musical Chords
edsrzf
🥈
90
181ms
15 May 2026
Van Eck Sequence
Natanaelel
40
199ms
15 May 2026
Tongue-twisters
prestosilver
528
108ms
15 May 2026
Van Eck Sequence
GrayJoKing
💎
31
152ms
15 May 2026
Alphabetic Numbers
LostSyntax21
🥉
213
164ms
15 May 2026
24 Game
SirBogman
💎
195
4,966ms
15 May 2026
Alphabetic Numbers
Steffan153
💎
117
295ms
15 May 2026
Rule 110
Natanaelel
65
143ms
14 May 2026