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
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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
Divisors
retrohun
1,174
6ms
a min ago
Ten-pin Bowling
Steffan153
💎
133
108ms
20 hours ago
Nim
edsrzf
118
14ms
33 hours ago
Nim
kg583
119
22ms
34 hours ago
Seven Segment
edsrzf
💎
135
9ms
2 days ago
Rule 110
edsrzf
💎
125
41ms
3 days ago
ln 2
Steffan153
🥉
67
56ms
4 days ago
γ
retrohun
1,011
6ms
4 days ago
ln 2
error256
85
1,066ms
4 days ago
τ
retrohun
1,011
8ms
4 days ago
ln 2
edsrzf
🥇
66
104ms
5 days ago
Quine
sisyphus-ppcg
🥇
42
9ms
6 days ago
Alphabetic Numbers
zzh1996
68
111ms
8 days ago
Jacobi Symbol
edsrzf
🥈
166
20ms
12 days ago
Kaprekar Numbers
edsrzf
🥇
106
3,285ms
12 days ago
Seven Segment
AstroOrbis
292
7ms
12 days ago
ln 2
kg583
77
60ms
12 days ago
Catalan’s Constant
edsrzf
💎
102
29ms
13 days ago
Catalan’s Constant
kg583
🥈
106
88ms
14 days ago
γ
edsrzf
💎
118
1,729ms
14 days ago
γ
kg583
🥈
123
2,689ms
14 days ago
Tic-tac-toe
edsrzf
🥇
92
12ms
15 days ago
Proximity Grid
edsrzf
💎
144
15ms
16 days ago
Arrows
Steffan153
🥈
140
7ms
16 days ago
Arrows
edsrzf
💎
135
8ms
17 days ago
CSS Colors
kg583
692
175ms
17 days ago
CSS Colors
edsrzf
💎
662
58ms
17 days ago
Taxicab Numbers
edsrzf
🥇
91
92ms
18 days ago
Billiards
edsrzf
💎
166
25ms
18 days ago
Billiards
volysandro
🥈
167
19ms
18 days ago
CSS Colors
Steffan153
🥈
664
50ms
19 days ago
Tutorial
LaconicLuna
151
7ms
19 days ago
Fibonacci
ZoDoneRightNow
46
7ms
20 days ago
Fizz Buzz
alecdavidson
211
8ms
20 days ago
Recamán
kg583
🥈
86
12ms
21 days ago
Van Eck Sequence
kg583
🥇
56
50ms
21 days ago
Lucky Tickets
Steffan153
🥉
138
66ms
22 days ago
Lucky Tickets
edsrzf
🥇
134
11ms
22 days ago
Star Wars Opening Crawl
edsrzf
💎
348
57ms
24 days ago
Star Wars Opening Crawl
kg583
🥈
349
135ms
24 days ago
Connect Four
edsrzf
🦄
252
29ms
26 days ago
PalindromemordnilaP
Steffan153
🥇
87
7ms
26 days ago
λ
Haksell
1,011
7ms
26 days ago
Set
kg583
150
56ms
26 days ago
ln 2
retrohun
1,014
6ms
27 days ago
Abundant Numbers
retrohun
171
7ms
31 May 2026
Abundant Numbers (Long)
retrohun
972
6ms
31 May 2026
99 Bottles of Beer
retrohun
11,893
6ms
31 May 2026
12 Days of Christmas
retrohun
2,377
6ms
31 May 2026
γ
Haksell
1,011
6ms
31 May 2026
PalindromemordnilaP
sean-niemann
🥇
87
7ms
30 May 2026
Zodiac Signs
edsrzf
🥈
193
13ms
28 May 2026
Rijndael S-box
kg583
💎
208
35ms
25 May 2026
Star Wars GPT
kg583
🥈
140
11ms
24 May 2026
Alphabetic Numbers
codereport
68
104ms
23 May 2026
Nim
Shanethegamer
129
10ms
23 May 2026
Alphabetic Numbers
plcc0
70
105ms
21 May 2026
Alphabetic Numbers
oaiqjuy
68
104ms
21 May 2026
Tic-tac-toe
Steffan153
🥇
92
11ms
21 May 2026
τ
kg583
🥈
80
106ms
19 May 2026
π
kg583
🥈
79
104ms
19 May 2026
Polyominoes
Steffan153
💎
206
378ms
19 May 2026
Sudoku (Fill-in)
edsrzf
🥈
248
317ms
18 May 2026
Leap Years
Steffan153
💎
51
7ms
18 May 2026
Sudoku (Fill-in)
Steffan153
💎
247
456ms
18 May 2026
Trinomial Triangle
zacjl
🥉
70
8ms
17 May 2026
Collatz
scpchicken
100
15ms
17 May 2026
Look and Say
kg583
84
6ms
16 May 2026
Ellipse Perimeters
Shanethegamer
111
6ms
16 May 2026
Alphabetic Numbers
emgordon154
🥇
67
104ms
14 May 2026
Spelling Numbers
emgordon154
🥇
99
30ms
14 May 2026
Vampire Numbers
emgordon154
🥈
134
400ms
14 May 2026
Alphabetic Numbers
snoozingnewt
68
102ms
14 May 2026
Ordinal Numbers
GolfingSuccess
102
27ms
14 May 2026
Spelling Numbers
GolfingSuccess
🥇
99
30ms
14 May 2026
Alphabetic Numbers
GolfingSuccess
🥇
67
105ms
14 May 2026
Calendar
edsrzf
💎
193
60ms
14 May 2026
Roman to Arabic
kg583
105
132ms
13 May 2026
Alphabetic Numbers
kg583
🥇
67
105ms
13 May 2026
Spelling Numbers
edsrzf
🥇
99
30ms
13 May 2026
Alphabetic Numbers
edsrzf
🥇
67
105ms
13 May 2026
Arabic to Roman
CaedenHarper
🥇
73
33ms
13 May 2026
Spelling Numbers
zacjl
🥇
99
30ms
13 May 2026
Spelling Numbers
Steffan153
🥇
99
30ms
13 May 2026
Roman to Arabic
Steffan153
💎
95
123ms
13 May 2026
Alphabetic Numbers
Steffan153
🥇
67
106ms
13 May 2026
Alphabetic Numbers
zacjl
🥇
67
106ms
13 May 2026
Happy Numbers (Long)
emgordon154
105
13ms
13 May 2026
Alphabetic Numbers
CaedenHarper
68
103ms
13 May 2026
Spelling Numbers
CaedenHarper
100
18ms
13 May 2026
Alphabetic Numbers
LostSyntax21
68
100ms
12 May 2026
Ulam Sequence
HumanoidCPU
1,101
7ms
12 May 2026
Alphabetic Numbers
BREMAUCY
75
102ms
12 May 2026
Alphabetic Numbers
scpchicken
68
103ms
12 May 2026
Alphabetic Numbers
KatieLG
3,903
7ms
12 May 2026
Alphabetic Numbers
DialFrost
68
103ms
12 May 2026
Alphabetic Numbers
Shanethegamer
68
101ms
12 May 2026
Alphabetic Numbers
dokutan
1,936
11ms
12 May 2026
Alphabetic Numbers
2bular
68
103ms
12 May 2026
Alphabetic Numbers
MeWhenI
68
101ms
12 May 2026