The
Nim
hole will go live in approximately
2 days
. Why not try and solve it ahead of time?
Recent Solutions
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Cheevos
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
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Arrows
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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
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
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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
γ
retrohun
1,009
3ms
4 days ago
τ
retrohun
1,009
5ms
4 days ago
Quine
scpchicken
🥇
14
4ms
7 days ago
Day of Week
AlephSquirrel
🥉
298
8ms
10 days ago
Sierpiński Triangle
zgialor-lab
108
3ms
11 days ago
Polyominoes
scpchicken
💎
1,832
4ms
11 days ago
Evil Numbers (Long)
madex
84
4ms
11 days ago
Seven Segment
madex
228
5ms
18 days ago
Tutorial
LaconicLuna
217
6ms
18 days ago
Seven Segment
AlephSquirrel
🥉
158
4ms
20 days ago
Nim
albanian-laundromat
143
5ms
21 days ago
Alphabetic Numbers
scpchicken
🥈
1,923
18ms
24 days ago
𝑒
jatloe
1,013
5ms
25 days ago
Gray Code Decoder
AlephSquirrel
🥈
98
8ms
27 days ago
ln 2
retrohun
1,011
5ms
27 days ago
Abundant Numbers
retrohun
441
6ms
27 days ago
Abundant Numbers (Long)
retrohun
2,442
7ms
27 days ago
99 Bottles of Beer
retrohun
13,681
7ms
27 days ago
12 Days of Christmas
retrohun
3,049
6ms
27 days ago
γ
Haksell
1,009
6ms
27 days ago
Alphabetic Numbers
typeswitch-dev
💎
401
7ms
27 May 2026
Spelling Numbers
typeswitch-dev
🥈
441
52ms
27 May 2026
99 Bottles of Beer
typeswitch-dev
💎
268
5ms
27 May 2026
Leap Years
denkyuu1
102
6ms
26 May 2026
Alphabetic Numbers
CaedenHarper
🥉
4,900
5ms
21 May 2026
Tutorial
zgialor-lab
72
5ms
20 May 2026
Fizz Buzz
zgialor-lab
100
5ms
19 May 2026
Leap Years
Steffan153
💎
51
5ms
18 May 2026
Fibonacci
prestosilver
48
4ms
14 May 2026
Minesweeper
retrohun
549
9ms
13 May 2026
Ulam Sequence
HumanoidCPU
2,591
4ms
12 May 2026
Alphabetic Numbers
KatieLG
9,904
4ms
12 May 2026
Alphabetic Numbers
dokutan
🥉
4,900
5ms
12 May 2026
Sphenic Numbers
albanian-laundromat
98
794ms
12 May 2026
Ulam Sequence
Shanethegamer
1,347
6ms
11 May 2026
Continued Fractions
AidanWalter
🥈
983
4ms
9 May 2026
Star Wars GPT
AidanWalter
🦄
2,155
15ms
9 May 2026
Prime Numbers
fuzzylojik-golf
🥈
52
4ms
7 May 2026
Gray Code Encoder
zgialor-lab
🥈
69
21ms
7 May 2026
Semiprime Numbers
albanian-laundromat
115
1,011ms
4 May 2026
brainfuck
zgialor-lab
288
5ms
3 May 2026
Reverse Polish Notation
zgialor-lab
🥇
30
6ms
3 May 2026
99 Bottles of Beer
madeforlosers
12,190
4ms
1 May 2026
24 Game
madeforlosers
13,800
4ms
1 May 2026
Fibonacci
sisyphus-ppcg
32
6ms
1 May 2026
Taxicab Numbers
dokutan
🥇
4,649
4ms
1 May 2026
Taxicab Numbers
CaedenHarper
🥇
4,649
4ms
29 Apr 2026
Dragon Curve
dokutan
10,532
5ms
28 Apr 2026
Kolakoski Sequence
madeforlosers
2,006
3ms
24 Apr 2026
Dragon Curve
HumanoidCPU
11,765
4ms
24 Apr 2026
Minesweeper
albanian-laundromat
🥈
186
131ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,534
4ms
23 Apr 2026
Polyominoes
albanian-laundromat
🥈
2,392
58ms
23 Apr 2026
Rijndael S-box
albanian-laundromat
💎
263
18ms
23 Apr 2026
𝑒
albanian-laundromat
128
26ms
23 Apr 2026
Kolakoski Constant
albanian-laundromat
💎
171
42ms
23 Apr 2026
Evil Numbers
madeforlosers
101
4ms
23 Apr 2026
Cubes
albanian-laundromat
💎
250
4ms
23 Apr 2026
Cubes
madeforlosers
4,218
4ms
22 Apr 2026
Odious Numbers
madeforlosers
105
3ms
22 Apr 2026
Evil Numbers (Long)
madeforlosers
2,457
3ms
22 Apr 2026
Farey Sequence
madeforlosers
5,135
4ms
22 Apr 2026
Odious Numbers (Long)
madeforlosers
2,451
4ms
22 Apr 2026
Abundant Numbers
madeforlosers
215
3ms
22 Apr 2026
Abundant Numbers (Long)
madeforlosers
1,216
4ms
22 Apr 2026
Prime Numbers
madeforlosers
102
3ms
22 Apr 2026
Look and Say
madeforlosers
1,305
4ms
22 Apr 2026
Prime Numbers (Long)
madeforlosers
7,183
4ms
22 Apr 2026
Divisors
madeforlosers
1,272
3ms
22 Apr 2026
Foo Fizz Buzz Bar
madeforlosers
6,725
4ms
22 Apr 2026
12 Days of Christmas
madeforlosers
2,488
3ms
22 Apr 2026
Tongue-twisters
madeforlosers
543
4ms
22 Apr 2026
Niven Numbers (Long)
madeforlosers
8,982
5ms
22 Apr 2026
Niven Numbers
madeforlosers
130
3ms
22 Apr 2026
Fizz Buzz
madeforlosers
519
4ms
22 Apr 2026
Quine
zgialor-lab
🥇
14
5ms
21 Apr 2026
γ
edsrzf
💎
552
6ms
20 Apr 2026
λ
edsrzf
💎
550
5ms
20 Apr 2026
λ
roelderickx
1,009
3ms
20 Apr 2026
Tutorial
NameRandomString
217
5ms
20 Apr 2026
Alphabetic Numbers
Shanethegamer
🥉
4,900
4ms
19 Apr 2026
Hilbert Curve
MeWhenI
💎
797
28ms
16 Apr 2026
Leap Years
prestosilver
66
4ms
14 Apr 2026
Collatz
zgialor-lab
107
5ms
13 Apr 2026
Divisors
zgialor-lab
64
4ms
12 Apr 2026
Tower of Hanoi
scpchicken
93
4ms
11 Apr 2026
Prime Numbers
zgialor-lab
63
6ms
11 Apr 2026
Fibonacci
zgialor-lab
36
4ms
11 Apr 2026
Arithmetic Numbers
zgialor-lab
100
450ms
11 Apr 2026
Musical Chords
albanian-laundromat
💎
340
4ms
1 Apr 2026
Pernicious Numbers
madex
124
3ms
29 Mar 2026
Kaprekar Numbers
MostParsingVex
💎
231
4,975ms
28 Mar 2026
Leap Years
fuzzylojik-golf
68
3ms
28 Mar 2026
Happy Numbers
fuzzylojik-golf
99
4ms
27 Mar 2026
Happy Numbers (Long)
fuzzylojik-golf
107
4ms
27 Mar 2026
Tutorial
fuzzylojik-golf
66
6ms
24 Mar 2026
Gray Code Encoder
fuzzylojik-golf
💎
60
16ms
24 Mar 2026
Prime Numbers (Long)
fuzzylojik-golf
🥈
66
278ms
23 Mar 2026
Tower of Hanoi
edsrzf
🥈
76
3ms
21 Mar 2026
Reversi
albanian-laundromat
💎
249
82ms
19 Mar 2026