The
Nim
hole will go live in approximately
2 days
. 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
All Languages
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ALGOL 68
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brainfuck
C
C#
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Common Lisp
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D
Dart
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iogii
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jq
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VimL
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Fennel
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Hy
Knight
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Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
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Stax
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Bytes
Chars
Scoring
Bytes
Chars
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
Nim
retrohun
65
104ms
19 hours ago
Hilbert Curve
NameRandomString
1,264
88ms
22 hours ago
Emirp Numbers (Long)
NameRandomString
155
549ms
47 hours ago
Abundant Numbers (Long)
rollershutter
81
888ms
3 days ago
Abundant Numbers
rollershutter
80
38ms
3 days ago
Niven Numbers
egol1
109
3ms
5 days ago
Sierpiński Triangle
retrohun
🥉
76
9ms
6 days ago
Look and Say
retrohun
99
13ms
6 days ago
Ordinal Numbers
retrohun
🥇
53
358ms
6 days ago
Rock-paper-scissors-Spock-lizard
NameRandomString
516
3ms
8 days ago
Alphabetic Numbers
NameRandomString
2,206
27ms
8 days ago
ln 2
NameRandomString
781
5ms
9 days ago
τ
NameRandomString
782
5ms
9 days ago
π
NameRandomString
785
5ms
9 days ago
λ
NameRandomString
787
5ms
9 days ago
γ
NameRandomString
779
5ms
9 days ago
√2
NameRandomString
783
5ms
9 days ago
Kolakoski Constant
NameRandomString
830
4ms
9 days ago
φ
NameRandomString
789
5ms
9 days ago
Multitap Input
rollershutter
🥉
198
26ms
11 days ago
24 Game
NameRandomString
🥉
4,205
236ms
11 days ago
Minesweeper
NameRandomString
709
258ms
11 days ago
Tic-tac-toe
NameRandomString
190
221ms
12 days ago
Hexdump
NameRandomString
297
22ms
12 days ago
Happy Numbers
NameRandomString
107
20ms
12 days ago
Arithmetic Numbers
NameRandomString
142
1,985ms
12 days ago
Abundant Numbers
NameRandomString
99
56ms
12 days ago
Abundant Numbers (Long)
NameRandomString
100
1,020ms
12 days ago
Catalan Numbers
NameRandomString
520
80ms
13 days ago
Morse Encoder
NameRandomString
625
4ms
13 days ago
Transpose Sentence
NameRandomString
92
19ms
13 days ago
Cubes
NameRandomString
382
14ms
13 days ago
Pangram Grep
NameRandomString
80
9ms
13 days ago
Time Distance
NameRandomString
344
17ms
13 days ago
Kolakoski Sequence
NameRandomString
89
8ms
13 days ago
12 Days of Christmas
NameRandomString
506
3ms
14 days ago
Forsyth–Edwards Notation
NameRandomString
205
3ms
17 days ago
ASCII Table
NameRandomString
160
16ms
17 days ago
Tutorial
LaconicLuna
133
2ms
18 days ago
Seven Segment
NameRandomString
205
2ms
19 days ago
Gray Code Decoder
retrohun
🥇
37
585ms
19 days ago
Poker
NameRandomString
1,096
22ms
19 days ago
Intersection
retrohun
🥉
117
30ms
21 days ago
Evil Numbers (Long)
Steffan153
🥇
35
4ms
22 days ago
Odious Numbers (Long)
Steffan153
37
4ms
22 days ago
Continued Fractions
NameRandomString
🥉
109
5ms
22 days ago
Tower of Hanoi
retrohun
66
391ms
24 days ago
Connect Four
retrohun
🥈
211
980ms
26 days ago
99 Bottles of Beer
leap0x7b
393
35ms
26 days ago
Connect Four
saito-ta
💎
135
451ms
27 days ago
Connect Four
scpchicken
🥉
256
240ms
27 days ago
Alphabetic Numbers
retrohun
🥈
435
119ms
27 days ago
Alphabetic Numbers
LostSyntax21
668
2,342ms
27 days ago
γ
Haksell
1,007
2ms
27 days ago
Farey Sequence
NameRandomString
104
7ms
27 days ago
Happy Numbers
Haksell
113
1ms
30 May 2026
Leap Years
RealBen9
61
2ms
29 May 2026
Card Number Validation
NameRandomString
97
10ms
28 May 2026
Alphabetic Numbers
CaedenHarper
3,901
3ms
21 May 2026
Factorial Factorisation
NameRandomString
168
291ms
21 May 2026
Alphabetic Numbers
saito-ta
💎
136
8ms
19 May 2026
Alphabetic Numbers
oaiqjuy
🥉
549
11ms
19 May 2026
Prime Numbers
madex
83
11ms
18 May 2026
Leap Years
Steffan153
🥇
36
2ms
18 May 2026
Mandelbrot
NameRandomString
🥉
458
20ms
14 May 2026
Pangram Grep
prestosilver
94
15ms
13 May 2026
Ulam Sequence
HumanoidCPU
1,099
2ms
12 May 2026
Alphabetic Numbers
KatieLG
3,901
3ms
12 May 2026
Alphabetic Numbers
dokutan
3,026
4ms
12 May 2026
Pernicious Numbers
NameRandomString
76
2ms
12 May 2026
Pernicious Numbers (Long)
NameRandomString
82
164ms
12 May 2026
Pernicious Numbers
sisyphus-ppcg
34
4ms
12 May 2026
Ulam Sequence
Shanethegamer
1,099
2ms
11 May 2026
Day of Week
LostSyntax21
105
10ms
9 May 2026
Christmas Trees
NameRandomString
106
3ms
9 May 2026
Sierpiński Triangle
NameRandomString
374
2ms
9 May 2026
Fibonacci
NameRandomString
48
2ms
9 May 2026
Fibonacci
roupiq
42
2ms
8 May 2026
Diamonds
NameRandomString
193
10ms
8 May 2026
Leap Years
Lydxn
🥇
36
2ms
7 May 2026
Fibonacci
imACanOfDrPepper
78
2ms
6 May 2026
Niven Numbers (Long)
Steffan153
46
1,946ms
6 May 2026
Niven Numbers
albanian-laundromat
71
2ms
5 May 2026
Star Wars GPT
NameRandomString
🥉
334
117ms
4 May 2026
Smith Numbers
NameRandomString
337
634ms
4 May 2026
N Queens
NameRandomString
1,252
2ms
3 May 2026
brainfuck
NameRandomString
485
330ms
3 May 2026
Medal Tally
NameRandomString
203
21ms
3 May 2026
Intersection
NameRandomString
🥉
117
7ms
2 May 2026
Quine
NameRandomString
🥇
19
2ms
2 May 2026
99 Bottles of Beer
madeforlosers
11,892
6ms
1 May 2026
24 Game
madeforlosers
12,439
6ms
1 May 2026
ROT13
retrohun
💎
105
241ms
1 May 2026
Rijndael S-box
retrohun
489
16ms
1 May 2026
Taxicab Numbers
dokutan
3,322
8ms
1 May 2026
Quine
prestosilver
21
2ms
29 Apr 2026
Foo Fizz Buzz Bar
ComradeSquirrel
108
9ms
29 Apr 2026
Fizz Buzz
ComradeSquirrel
75
2ms
29 Apr 2026
Taxicab Numbers
CaedenHarper
4,166
4ms
29 Apr 2026
Dragon Curve
dokutan
7,648
10ms
28 Apr 2026