The
Nim
hole will go live in approximately
6 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
All Languages
><>
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
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
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
Seven Segment
jameswmccarty
211
55ms
17 hours ago
brainfuck
codereport
77
54ms
25 hours ago
Tutorial
jameswmccarty
123
55ms
47 hours ago
γ
retrohun
1,036
54ms
6 days ago
Tongue-twisters
zzh1996
🥉
243
63ms
9 days ago
Tutorial
local-furry-robot
123
75ms
10 days ago
Day of Week
lyphyser
💎
132
82ms
13 days ago
Fibonacci
duckyluuk
108
60ms
20 days ago
Evil Numbers
Herbert00709
35
56ms
20 days ago
Evil Numbers (Long)
Herbert00709
41
58ms
20 days ago
Odious Numbers (Long)
Herbert00709
🥉
38
58ms
20 days ago
Tutorial
LaconicLuna
123
179ms
21 days ago
Collatz
Herbert00709
49
63ms
24 days ago
Fizz Buzz
Herbert00709
72
63ms
24 days ago
Odious Numbers
Herbert00709
🥉
34
60ms
24 days ago
𝑒
jatloe
1,037
56ms
27 days ago
Tongue-twisters
codereport
🥈
228
71ms
1 Jun 2026
γ
Haksell
1,018
99ms
31 May 2026
Happy Numbers
Haksell
120
69ms
30 May 2026
Rijndael S-box
akaritakai
113
78ms
29 May 2026
Fibonacci
Mefred
119
79ms
28 May 2026
Rijndael S-box
codereport
🥉
58
90ms
28 May 2026
Evil Numbers (Long)
iczelia
🥉
40
66ms
26 May 2026
Gray Code Decoder
akaritakai
🥉
80
63ms
26 May 2026
Seven Segment
akaritakai
200
78ms
26 May 2026
Ulam Sequence
lyphyser
64
60ms
25 May 2026
Rijndael S-box
Steffan153
69
72ms
25 May 2026
brainfuck
christian-zimmermann
74
59ms
25 May 2026
Sudoku (Fill-in)
codereport
229
86ms
24 May 2026
Maze
oaiqjuy
107
81ms
21 May 2026
Alphabetic Numbers
CaedenHarper
3,916
66ms
21 May 2026
Factorial Factorisation
dokutan
530
66ms
20 May 2026
Morse Encoder
dokutan
850
88ms
20 May 2026
Tutorial
zgialor-lab
98
116ms
20 May 2026
Fibonacci
roupiq
45
73ms
13 May 2026
Ulam Sequence
HumanoidCPU
1,106
57ms
12 May 2026
Alphabetic Numbers
KatieLG
3,918
56ms
12 May 2026
Alphabetic Numbers
dokutan
🥈
2,045
106ms
12 May 2026
Ulam Sequence
Shanethegamer
1,114
53ms
11 May 2026
√2
iczelia
🥈
100
67ms
9 May 2026
ROT13
iczelia
🥉
45
54ms
9 May 2026
𝑒
iczelia
🥈
50
54ms
9 May 2026
Evil Numbers
iczelia
💎
31
60ms
9 May 2026
Fibonacci
iczelia
38
56ms
9 May 2026
Fizz Buzz
iczelia
🥉
63
59ms
9 May 2026
Fibonacci
sisyphus-ppcg
165
54ms
7 May 2026
Alphabetic Numbers
lyphyser
💎
132
58ms
6 May 2026
Leap Years
LostSyntax21
81
53ms
4 May 2026
99 Bottles of Beer
madeforlosers
11,906
61ms
1 May 2026
24 Game
madeforlosers
12,453
67ms
1 May 2026
Taxicab Numbers
dokutan
🥉
2,178
70ms
1 May 2026
Taxicab Numbers
CaedenHarper
4,181
54ms
29 Apr 2026
Dragon Curve
dokutan
10,286
55ms
28 Apr 2026
PalindromemordnilaP
lyphyser
🥇
56
54ms
28 Apr 2026
Ten-pin Bowling
lyphyser
🥈
119
57ms
28 Apr 2026
Huffman Encoder
lyphyser
115
64ms
28 Apr 2026
Crossword
lyphyser
157
236ms
28 Apr 2026
Nim
lyphyser
49
57ms
26 Apr 2026
Fractions
osNiko
133
58ms
26 Apr 2026
Dragon Curve
lyphyser
89
63ms
26 Apr 2026
Multitap Input
lyphyser
🥈
47
59ms
24 Apr 2026
Cubes
lyphyser
💎
103
70ms
24 Apr 2026
Kolakoski Sequence
madeforlosers
2,021
59ms
24 Apr 2026
Dragon Curve
HumanoidCPU
10,286
55ms
23 Apr 2026
Dragon Curve
Shanethegamer
10,294
65ms
23 Apr 2026
Evil Numbers
madeforlosers
91
51ms
23 Apr 2026
Cubes
madeforlosers
4,122
70ms
22 Apr 2026
Fibonacci
cuvam
109
69ms
22 Apr 2026
Odious Numbers
madeforlosers
94
65ms
22 Apr 2026
Evil Numbers (Long)
madeforlosers
1,971
63ms
22 Apr 2026
Farey Sequence
madeforlosers
4,375
71ms
22 Apr 2026
Odious Numbers (Long)
madeforlosers
1,966
73ms
22 Apr 2026
Abundant Numbers
madeforlosers
184
60ms
22 Apr 2026
Abundant Numbers (Long)
madeforlosers
985
61ms
22 Apr 2026
Prime Numbers
madeforlosers
92
59ms
22 Apr 2026
Look and Say
madeforlosers
1,300
57ms
22 Apr 2026
Prime Numbers (Long)
madeforlosers
5,969
61ms
22 Apr 2026
Divisors
madeforlosers
1,187
56ms
22 Apr 2026
Foo Fizz Buzz Bar
madeforlosers
5,740
62ms
22 Apr 2026
12 Days of Christmas
madeforlosers
2,390
66ms
22 Apr 2026
Tongue-twisters
madeforlosers
544
64ms
22 Apr 2026
Fibonacci
madeforlosers
155
88ms
22 Apr 2026
Niven Numbers (Long)
madeforlosers
7,459
93ms
22 Apr 2026
Collatz
madeforlosers
3,247
61ms
22 Apr 2026
Niven Numbers
madeforlosers
112
57ms
22 Apr 2026
Fizz Buzz
madeforlosers
434
59ms
22 Apr 2026
λ
roelderickx
1,036
52ms
20 Apr 2026
Alphabetic Numbers
Shanethegamer
3,916
56ms
19 Apr 2026
Tic-tac-toe
osNiko
261
86ms
19 Apr 2026
Reverse Polish Notation
osNiko
128
62ms
19 Apr 2026
Fizz Buzz
roupiq
83
92ms
15 Apr 2026
Fizz Buzz
gaving-quadprep
134
60ms
13 Apr 2026
Evil Numbers
gaving-quadprep
66
63ms
13 Apr 2026
Odious Numbers
gaving-quadprep
66
76ms
13 Apr 2026
Tower of Hanoi
scpchicken
137
63ms
11 Apr 2026
Evil Numbers
roupiq
44
69ms
10 Apr 2026
Odious Numbers
roupiq
62
74ms
10 Apr 2026
Evil Numbers (Long)
roupiq
68
72ms
10 Apr 2026
π
Herbert00709
145
75ms
10 Apr 2026
Foo Fizz Buzz Bar
osNiko
188
60ms
5 Apr 2026