The
Nim
hole will go live in approximately
8 hours
. Why not try and solve it ahead of time?
Recent Solutions
Prev Hole
Play Hole
Next Hole
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
Chars
Time
Submitted
Collatz
MiffOttah
84
448ms
13 days ago
Collatz
Skellybob56
87
407ms
20 May 2026
Collatz
michelebastione
86
381ms
28 Apr 2026
Collatz
scpchicken
🥉
83
403ms
23 Apr 2026
Collatz
kasarino
94
373ms
17 Mar 2026
Collatz
bpharaldsson
87
410ms
9 Feb 2026
Collatz
amazingalek
🥉
83
417ms
21 Jan 2026
Collatz
arcpolaris
🥉
83
435ms
13 Jan 2026
Collatz
mwarvik
3,244
354ms
25 Dec 2025
Collatz
razvandmtr
90
413ms
6 Nov 2025
Collatz
gpikmddk
111
374ms
3 Nov 2025
Collatz
Flix7dev
🥉
83
436ms
21 Oct 2025
Collatz
CaedenHarper
🥉
83
399ms
17 Oct 2025
Collatz
snoozingnewt
92
392ms
8 Oct 2025
Collatz
ChromaChroma
92
391ms
7 Oct 2025
Collatz
albanian-laundromat
86
389ms
30 Sep 2025
Collatz
kmathis22
88
382ms
25 Sep 2025
Collatz
fuzzylojik-golf
🥉
83
386ms
8 Sep 2025
Collatz
tomh1012
🥉
83
419ms
28 Aug 2025
Collatz
kodaimasano
108
398ms
9 Jul 2025
Collatz
123mjb
90
388ms
23 Jun 2025
Collatz
stefangimmillaro
🥉
83
398ms
20 Jun 2025
Collatz
sean-niemann
🥉
83
413ms
20 Jun 2025
Collatz
MeWhenI
🥉
83
396ms
19 Jun 2025
Collatz
TheZwierzLF
94
402ms
2 Jun 2025
Collatz
Yax42
🥉
83
448ms
19 Apr 2025
Collatz
Tyrant7
🥉
83
462ms
19 Apr 2025
Collatz
kylejcwu
🥉
83
384ms
19 Apr 2025
Collatz
Squimbletin
94
399ms
19 Apr 2025
Collatz
janbehrens
84
465ms
17 Apr 2025
Collatz
Re-Adventures
84
431ms
15 Apr 2025
Collatz
ComputerKWasTaken
128
384ms
14 Apr 2025
Collatz
annaproxy
84
435ms
11 Apr 2025
Collatz
tomtheisen
85
423ms
10 Apr 2025
Collatz
DialFrost
🥉
83
437ms
10 Apr 2025
Collatz
m-tkach
🥉
83
453ms
10 Apr 2025
Collatz
HumanoidCPU
84
448ms
10 Apr 2025
Collatz
dokutan
🥉
83
401ms
9 Apr 2025
Collatz
namelessiw
🥉
83
420ms
9 Apr 2025
Collatz
Shanethegamer
84
419ms
9 Apr 2025
Collatz
kevinnaviapaiva
161
400ms
20 Feb 2025
Collatz
BeansMage42
144
417ms
28 Dec 2024
Collatz
madeforlosers
92
401ms
21 Nov 2024
Collatz
JesseNoEyes
108
399ms
24 Oct 2024
Collatz
Mabeloid
4,242
349ms
17 Sep 2024
Collatz
Grabnukebomb
84
388ms
13 Sep 2024
Collatz
ertz1ertz
84
379ms
13 Sep 2024
Collatz
hippopotam00sehead
106
427ms
11 Sep 2024
Collatz
Mikey-Beep
91
367ms
3 Sep 2024
Collatz
malworthy
93
367ms
19 Aug 2024
Collatz
rifatx
88
365ms
5 Jul 2024
Collatz
Matto58
109
398ms
3 Jul 2024
Collatz
KatieLG
91
389ms
30 Apr 2024
Collatz
deadp4nda
90
372ms
26 Apr 2024
Collatz
Alex-Huggett
98
358ms
13 Apr 2024
Collatz
tik25
126
399ms
28 Mar 2024
Collatz
trinityy-7
94
396ms
7 Mar 2024
Collatz
TRexOnGit
89
395ms
16 Feb 2024
Collatz
brimstonetrader
132
385ms
8 Jan 2024
Collatz
ElysiaVesper
101
379ms
19 Nov 2023
Collatz
GolfGPT
137
439ms
19 Nov 2023
Collatz
wgloverDH
104
388ms
6 Nov 2023
Collatz
josephdwalker
104
396ms
31 Oct 2023
Collatz
Maximizer02
92
372ms
1 Oct 2023
Collatz
bac0id
89
383ms
26 Sep 2023
Collatz
Widgitty
85
390ms
1 Sep 2023
Collatz
aDwarfNamedUrist
98
373ms
30 Aug 2023
Collatz
Mezzofloat
92
369ms
26 Aug 2023
Collatz
msbranicky
107
385ms
20 Aug 2023
Collatz
KrausRaus
🥉
83
386ms
31 Jul 2023
Collatz
gblikas
🥉
83
382ms
23 Jul 2023
Collatz
Pyro569
105
413ms
20 Jul 2023
Collatz
fkantelberg
89
374ms
15 Jul 2023
Collatz
GoodDays13
154
394ms
12 Jul 2023
Collatz
kellantech
92
379ms
4 Jul 2023
Collatz
AdrienHache
🥉
83
426ms
8 Jun 2023
Collatz
ericlangedijk
91
361ms
23 May 2023
Collatz
postie77
84
375ms
19 May 2023
Collatz
Matgc04
🥉
83
363ms
19 May 2023
Collatz
Adix-null
🥉
83
391ms
17 May 2023
Collatz
bwat2
87
368ms
6 Apr 2023
Collatz
arctouch-cristiannevianna
85
386ms
3 Apr 2023
Collatz
btnlq
🥉
83
391ms
9 Mar 2023
Collatz
StronkCheese
109
381ms
18 Feb 2023
Collatz
TimJackMaster
107
404ms
16 Feb 2023
Collatz
Yewzir
🥉
83
386ms
12 Feb 2023
Collatz
SiestaGuru
88
385ms
9 Jan 2023
Collatz
Betuaredead
🥉
83
369ms
5 Jan 2023
Collatz
retrohun
4,242
362ms
27 Dec 2022
Collatz
ChrisTheisen
92
380ms
14 Dec 2022
Collatz
astdefu
105
401ms
10 Dec 2022
Collatz
revlayle
86
401ms
7 Dec 2022
Collatz
Bodo171
122
378ms
6 Dec 2022
Collatz
Nickmiste
84
348ms
9 Nov 2022
Collatz
tpasfieldERAU
101
391ms
5 Nov 2022
Collatz
wescombs10
99
388ms
29 Oct 2022
Collatz
bschorno
92
368ms
12 Oct 2022
Collatz
Kloppermand
87
383ms
7 Oct 2022
Collatz
5quiwyrm
🥉
83
384ms
4 Sep 2022
Collatz
eshilo-draper
91
365ms
4 Sep 2022