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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12 Days of Christmas
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brainfuck
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Catalan’s Constant
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Continued Fractions
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Day of Week
DFA Simulator
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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
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
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
ovs-code
89
135ms
32 hours ago
Nim
DialFrost
97
126ms
33 hours ago
γ
retrohun
1,013
75ms
4 days ago
Fibonacci
albanian-laundromat
46
88ms
5 days ago
United States
zzh1996
🥇
63
86ms
7 days ago
Arabic to Roman
zzh1996
🥇
40
106ms
7 days ago
Inventory Sequence
Steffan153
🥈
54
134ms
8 days ago
Intersection
Steffan153
🥇
96
142ms
8 days ago
Polyominoes
DialFrost
🥈
250
228ms
9 days ago
Tongue-twisters
Mukundan314
💎
286
80ms
9 days ago
Tutorial
Gizzio
48
103ms
10 days ago
Seven Segment
DialFrost
178
85ms
13 days ago
Card Number Validation
DialFrost
🥈
79
114ms
13 days ago
Ascending Primes
DialFrost
🥇
74
113ms
13 days ago
Rock-paper-scissors-Spock-lizard
DialFrost
🥉
286
108ms
15 days ago
Poker
DialFrost
🥉
330
321ms
16 days ago
Divisors
RealBen9
78
81ms
17 days ago
𝑒
h3ra993huskp
1,013
75ms
19 days ago
Multitap Input
DialFrost
🥉
111
106ms
23 days ago
Reversi
DialFrost
153
119ms
23 days ago
Ten-pin Bowling
DialFrost
209
116ms
24 days ago
Game of Life
DialFrost
💎
137
90ms
24 days ago
𝑒
jatloe
1,013
77ms
25 days ago
QR Decoder
DialFrost
💎
159
69ms
25 days ago
Star Wars Opening Crawl
DialFrost
🥈
346
144ms
25 days ago
Partition Numbers
DialFrost
🥉
55
120ms
25 days ago
Inventory Sequence
DialFrost
💎
49
103ms
25 days ago
Gijswijt’s Sequence
DialFrost
🥇
85
4,828ms
26 days ago
𝑒
Haksell
1,009
76ms
26 days ago
Scrambled Sort
DialFrost
💎
82
143ms
26 days ago
Set
DialFrost
🥇
96
2,483ms
27 days ago
12 Days of Christmas
DialFrost
465
120ms
27 days ago
Connect Four
DialFrost
🥈
218
2,222ms
27 days ago
Calendar
ovs-code
🥈
164
189ms
27 days ago
Connect Four
ovs-code
💎
199
841ms
27 days ago
Lucky Tickets
DialFrost
🥈
106
168ms
27 days ago
ln 2
retrohun
1,013
81ms
27 days ago
Intersection
DialFrost
108
141ms
27 days ago
γ
Haksell
1,009
80ms
27 days ago
Rule 110
DialFrost
💎
78
84ms
31 May 2026
Forsyth–Edwards Notation
DialFrost
🥉
135
82ms
30 May 2026
PalindromemordnilaP
DialFrost
🥈
106
94ms
30 May 2026
Leyland Numbers
DialFrost
🥉
68
100ms
29 May 2026
Quine
DialFrost
🥉
30
85ms
29 May 2026
Tongue-twisters
DialFrost
364
86ms
29 May 2026
N Queens
DialFrost
🥈
106
113ms
29 May 2026
Foo Fizz Buzz Bar
DialFrost
91
95ms
29 May 2026
ASCII Table
DialFrost
🥈
101
76ms
29 May 2026
Smith Numbers
DialFrost
🥈
122
1,408ms
28 May 2026
Sierpiński Triangle
DialFrost
78
76ms
28 May 2026
Reverse Polish Notation
DialFrost
🥈
109
139ms
28 May 2026
Reverse Polish Notation
sean-niemann
💎
107
125ms
28 May 2026
Minesweeper
DialFrost
🥉
151
134ms
28 May 2026
24 Game
DialFrost
🥉
211
4,743ms
27 May 2026
Catalan Numbers
DialFrost
🥈
159
97ms
27 May 2026
Kolakoski Constant
DialFrost
🥈
109
1,096ms
27 May 2026
Kolakoski Sequence
DialFrost
🥈
43
108ms
27 May 2026
Cubes
DialFrost
🥉
211
91ms
25 May 2026
Tutorial
zgialor-lab
90
115ms
25 May 2026
Alphabetic Numbers
CaedenHarper
3,901
99ms
21 May 2026
Roman to Arabic
plcc0
🥇
35
103ms
21 May 2026
Arabic to Roman
plcc0
41
107ms
21 May 2026
Roman to Arabic
codereport
🥇
35
96ms
21 May 2026
United States
scpchicken
🥇
63
94ms
20 May 2026
United States
oaiqjuy
66
82ms
19 May 2026
ROT13
oaiqjuy
144
80ms
19 May 2026
Calendar
DialFrost
💎
157
151ms
19 May 2026
Leap Years
Steffan153
🥇
36
77ms
18 May 2026
Alphabetic Numbers
ovs-code
💎
133
125ms
17 May 2026
Alphabetic Numbers
LostSyntax21
🥈
232
101ms
16 May 2026
Arabic to Roman
2bular
🥇
40
111ms
13 May 2026
Ulam Sequence
HumanoidCPU
1,099
85ms
12 May 2026
Alphabetic Numbers
KatieLG
🥉
3,052
77ms
12 May 2026
Roman to Arabic
2bular
🥇
35
96ms
12 May 2026
Rock-paper-scissors-Spock-lizard
snoozingnewt
🥈
246
135ms
12 May 2026
Leap Years
denkyuu1
61
90ms
12 May 2026
Alphabetic Numbers
dokutan
3,901
95ms
12 May 2026
Proximity Grid
snoozingnewt
🥉
130
85ms
11 May 2026
Ulam Sequence
ovs-code
71
213ms
11 May 2026
Ulam Sequence
Shanethegamer
1,099
73ms
11 May 2026
Number Spiral
DialFrost
🥉
80
101ms
11 May 2026
Look and Say
Steffan153
🥇
57
104ms
8 May 2026
Taxicab Numbers
dokutan
4,166
86ms
8 May 2026
Mandelbrot
snoozingnewt
117
316ms
7 May 2026
Gray Code Decoder
snoozingnewt
🥉
71
167ms
7 May 2026
Gray Code Encoder
snoozingnewt
95
119ms
7 May 2026
Fibonacci
roupiq
38
94ms
7 May 2026
Foo Fizz Buzz Bar
Steffan153
💎
89
109ms
5 May 2026
Fizz Buzz
Steffan153
🥇
62
88ms
4 May 2026
Rule 110
snoozingnewt
🥈
85
92ms
4 May 2026
Fibonacci
Matter1024
46
87ms
4 May 2026
Continued Fractions
DialFrost
🥈
126
123ms
4 May 2026
Ten-pin Bowling
LostSyntax21
308
122ms
3 May 2026
Ten-pin Bowling
snoozingnewt
🥈
175
103ms
3 May 2026
Morse Decoder
snoozingnewt
🥉
218
98ms
3 May 2026
Emojify
snoozingnewt
🥉
185
107ms
3 May 2026
Maze
snoozingnewt
🥈
136
117ms
3 May 2026
Minesweeper
snoozingnewt
🥈
147
155ms
3 May 2026
Reversi
snoozingnewt
🥈
135
112ms
3 May 2026
Factorial Factorisation
snoozingnewt
🥉
88
95ms
3 May 2026