The
Nim
hole will go live in approximately
26 hours
. Why not try and solve it ahead of time?
Recent Solutions
Achievements
Cheevos
Golfers
Solutions
All Holes
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
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
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brainfuck
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D
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iogii
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Luau
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Qore
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Language
All
><>
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
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
Ulam Sequence
HumanoidCPU
1,094
151ms
12 May 2026
Ulam Sequence
Shanethegamer
1,094
112ms
11 May 2026
Nim
plcc0
29
156ms
4 May 2026
Dragon Curve
HumanoidCPU
10,274
150ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,274
133ms
23 Apr 2026
Alphabetic Numbers
Shanethegamer
3,896
120ms
19 Apr 2026
Tower of Hanoi
scpchicken
51
116ms
19 Apr 2026
Fizz Buzz
madex
42
117ms
14 Mar 2026
Alphabetic Numbers
HumanoidCPU
3,896
135ms
6 Mar 2026
Fizz Buzz
dokutan
35
145ms
15 Feb 2026
Tutorial
FortuiteMan
76
141ms
3 Feb 2026
π
plcc0
33
161ms
31 Jan 2026
Scrambled Sort
plcc0
20
121ms
31 Jan 2026
12 Days of Christmas
plcc0
383
122ms
31 Jan 2026
99 Bottles of Beer
plcc0
179
132ms
31 Jan 2026
Partition Numbers
plcc0
41
132ms
31 Jan 2026
Niven Numbers
plcc0
18
121ms
31 Jan 2026
Lucky Numbers
plcc0
30
167ms
31 Jan 2026
Fizz Buzz
plcc0
35
123ms
31 Jan 2026
Divisors
plcc0
22
135ms
31 Jan 2026
Diamonds
plcc0
33
135ms
31 Jan 2026
Collatz
plcc0
30
167ms
31 Jan 2026
Sphenic Numbers
plcc0
17
167ms
31 Jan 2026
Semiprime Numbers
plcc0
13
155ms
31 Jan 2026
ASCII Table
plcc0
60
118ms
31 Jan 2026
Card Number Validation
plcc0
30
136ms
31 Jan 2026
Leap Years
plcc0
25
131ms
31 Jan 2026
Evil Numbers
plcc0
12
121ms
31 Jan 2026
Quine
plcc0
8
130ms
31 Jan 2026
Pangram Grep
plcc0
18
170ms
31 Jan 2026
π
Andrey2001
1,004
132ms
25 Jan 2026
Tutorial
Mefred
76
133ms
23 Jan 2026
𝑒
JOrE20
1,004
107ms
5 Jan 2026
Tutorial
HumanoidCPU
23
149ms
1 Jan 2026
Tutorial
kurkale6ka
26
159ms
11 Dec 2025
Pernicious Numbers
snoozingnewt
15
102ms
8 Dec 2025
ASCII Table
HumanoidCPU
274
102ms
7 Dec 2025
Evil Numbers (Long)
aditsu
14
106ms
30 Nov 2025
Evil Numbers
aditsu
12
96ms
30 Nov 2025
Odious Numbers (Long)
aditsu
12
112ms
30 Nov 2025
Odious Numbers
aditsu
11
109ms
30 Nov 2025
Tower of Hanoi
KatieLG
3,578
103ms
30 Nov 2025
Taxicab Numbers
HumanoidCPU
4,161
116ms
27 Nov 2025
Taxicab Numbers
Shanethegamer
4,161
131ms
26 Nov 2025
Smooth Numbers
GolfingSuccess
28
543ms
24 Nov 2025
Diamonds
aditsu
45
114ms
23 Nov 2025
ASCII Table
aditsu
56
110ms
23 Nov 2025
Continued Fractions
GolfingSuccess
47
150ms
21 Nov 2025
Kolakoski Sequence
HumanoidCPU
2,001
105ms
12 Nov 2025
Tower of Hanoi
HumanoidCPU
3,578
113ms
6 Nov 2025
Tower of Hanoi
GolfingSuccess
28
114ms
30 Oct 2025
Tower of Hanoi
Shanethegamer
3,578
113ms
30 Oct 2025
Look and Say
plcc0
12
113ms
25 Oct 2025
Prime Numbers
plcc0
9
105ms
24 Oct 2025
Prime Numbers (Long)
plcc0
10
111ms
24 Oct 2025
Ellipse Perimeters
Shanethegamer
35
99ms
20 Oct 2025
Tutorial
Babafaba
76
138ms
15 Oct 2025
Prime Numbers (Long)
snoozingnewt
10
114ms
9 Oct 2025
Prime Numbers
snoozingnewt
9
120ms
9 Oct 2025
Reverse Polish Notation
BREMAUCY
6
116ms
5 Oct 2025
Mandelbrot
aditsu
67
1,173ms
21 Sep 2025
Set
aditsu
28
168ms
21 Sep 2025
Tutorial
snoozingnewt
23
126ms
15 Sep 2025
Fizz Buzz
snoozingnewt
35
116ms
14 Sep 2025
Fizz Buzz
CaedenHarper
35
117ms
28 Aug 2025
Tutorial
Vexxter9
82
146ms
21 Aug 2025
Quine
aditsu
8
125ms
20 Aug 2025
Hexagonal Spiral
HumanoidCPU
1,136
116ms
18 Aug 2025
Highly Composite Numbers
HumanoidCPU
393
114ms
18 Aug 2025
Hilbert Curve
HumanoidCPU
5,119
120ms
18 Aug 2025
Abundant Numbers (Long)
HumanoidCPU
965
113ms
18 Aug 2025
Polyominoes
HumanoidCPU
3,565
115ms
18 Aug 2025
Recamán
HumanoidCPU
898
108ms
18 Aug 2025
Rule 110
HumanoidCPU
15,853
134ms
18 Aug 2025
Kaprekar Numbers
HumanoidCPU
441
114ms
18 Aug 2025
Happy Numbers
HumanoidCPU
108
118ms
18 Aug 2025
Happy Numbers (Long)
HumanoidCPU
553
118ms
18 Aug 2025
Emirp Numbers (Long)
HumanoidCPU
1,157
110ms
18 Aug 2025
Catalan Numbers
HumanoidCPU
2,873
116ms
18 Aug 2025
Tongue-twisters
HumanoidCPU
524
108ms
18 Aug 2025
Van Eck Sequence
HumanoidCPU
2,556
117ms
17 Aug 2025
Abundant Numbers
HumanoidCPU
164
110ms
16 Aug 2025
Look and Say
HumanoidCPU
1,280
114ms
15 Aug 2025
Farey Sequence
HumanoidCPU
4,355
120ms
15 Aug 2025
Diamonds
HumanoidCPU
1,104
121ms
14 Aug 2025
Niven Numbers
HumanoidCPU
92
110ms
14 Aug 2025
Lucky Numbers
HumanoidCPU
4,821
124ms
14 Aug 2025
Inventory Sequence
HumanoidCPU
2,624
122ms
14 Aug 2025
Gijswijt’s Sequence
HumanoidCPU
2,001
113ms
14 Aug 2025
Smith Numbers
HumanoidCPU
1,825
123ms
14 Aug 2025
Arithmetic Numbers
HumanoidCPU
37,643
172ms
14 Aug 2025
Odious Numbers (Long)
HumanoidCPU
1,946
117ms
14 Aug 2025
Evil Numbers (Long)
HumanoidCPU
1,951
123ms
14 Aug 2025
N Queens
HumanoidCPU
1,247
116ms
14 Aug 2025
Pernicious Numbers (Long)
HumanoidCPU
20,663
171ms
14 Aug 2025
Divisors
HumanoidCPU
1,167
114ms
14 Aug 2025
Foo Fizz Buzz Bar
HumanoidCPU
5,720
125ms
14 Aug 2025
Prime Numbers (Long)
HumanoidCPU
5,949
123ms
14 Aug 2025
Niven Numbers (Long)
HumanoidCPU
7,439
127ms
14 Aug 2025
Set
GolfingSuccess
28
305ms
13 Aug 2025