The
Nim
hole will go live in approximately
10 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
Bytes
Time
Submitted
Collatz
kmathis22
🥉
89
400ms
11 days ago
Collatz
janbehrens
98
395ms
16 May 2026
Collatz
Steffan153
🥉
89
404ms
14 May 2026
Collatz
scpchicken
🥉
89
384ms
14 May 2026
Collatz
Orsailius
90
400ms
12 May 2026
Collatz
Joseph-Regruth_HON
96
404ms
6 May 2026
Collatz
Widgitty
110
399ms
29 Apr 2026
Collatz
Jonson26
100
377ms
15 Apr 2026
Collatz
madeforlosers
95
416ms
9 Apr 2026
Collatz
Nathan-Masala
102
386ms
7 Apr 2026
Collatz
piano-miles
92
427ms
24 Feb 2026
Collatz
ravnskjaer
105
554ms
15 Dec 2025
Collatz
TheZwierzLF
108
462ms
13 Dec 2025
Collatz
beardotpdf
99
436ms
12 Dec 2025
Collatz
Lydxn
🥇
88
370ms
12 Dec 2025
Collatz
KasperKivimaeki
🥉
89
435ms
30 Nov 2025
Collatz
ScottHamper
🥉
89
441ms
30 Nov 2025
Collatz
KatieLG
2,205
465ms
30 Nov 2025
Collatz
h3ra993huskp
90
435ms
30 Nov 2025
Collatz
tigerdan2
107
543ms
30 Nov 2025
Collatz
snoozingnewt
🥉
89
416ms
23 Nov 2025
Collatz
noescareno
96
429ms
21 Nov 2025
Collatz
123mjb
96
468ms
20 Nov 2025
Collatz
CarterStroik
100
446ms
13 Nov 2025
Collatz
ethanlally
🥉
89
460ms
10 Nov 2025
Collatz
HumanoidCPU
94
454ms
8 Nov 2025
Collatz
MeWhenI
🥉
89
501ms
7 Nov 2025
Collatz
Jacob385
🥉
89
451ms
27 Oct 2025
Collatz
jkelly467
94
476ms
23 Oct 2025
Collatz
CaedenHarper
🥉
89
452ms
9 Oct 2025
Collatz
stefangimmillaro
🥉
89
481ms
6 Oct 2025
Collatz
Yax42
🥉
89
444ms
4 Oct 2025
Collatz
Yewzir
🥉
89
421ms
2 Oct 2025
Collatz
namelessiw
🥉
89
455ms
2 Oct 2025
Collatz
Schmitt-Very-Cool
98
456ms
26 Sep 2025
Collatz
m-tkach
🥉
89
441ms
25 Sep 2025
Collatz
Liibe
97
491ms
25 Sep 2025
Collatz
nwellnhof
🥉
89
386ms
25 Sep 2025
Collatz
Shanethegamer
🥉
89
450ms
25 Sep 2025
Collatz
JayXon
🥇
88
355ms
24 Sep 2025
Collatz
sean-niemann
🥉
89
443ms
24 Sep 2025
Collatz
dokutan
🥉
89
537ms
24 Sep 2025
Collatz
albanian-laundromat
94
455ms
24 Sep 2025
Collatz
ovs-code
🥉
89
460ms
24 Sep 2025
Collatz
DialFrost
🥉
89
405ms
24 Sep 2025
Collatz
katss2
141
412ms
19 Sep 2025
Collatz
matas132
141
407ms
16 Sep 2025
Collatz
plastic-bottle
126
414ms
27 Aug 2025
Collatz
Apataras
127
373ms
16 Jul 2025
Collatz
clayboll99
160
374ms
15 Jul 2025
Collatz
0dyse
135
377ms
23 Apr 2025
Collatz
Chinay-Domitrix
149
389ms
29 Mar 2025
Collatz
yoshykai
129
371ms
27 Mar 2025
Collatz
dorschmeisterV2
168
383ms
6 Mar 2025
Collatz
kevinnaviapaiva
245
382ms
18 Feb 2025
Collatz
Kian1031
251
360ms
28 Jan 2025
Collatz
GeneralFabian
151
422ms
2 Dec 2024
Collatz
mrondon8
126
380ms
2 Dec 2024
Collatz
yashima
141
396ms
19 Oct 2024
Collatz
Mabeloid
4,297
361ms
17 Sep 2024
Collatz
bac0id
129
362ms
29 Jun 2024
Collatz
eMGeeneer
126
382ms
15 Jun 2024
Collatz
luca1339
156
382ms
10 Jun 2024
Collatz
Maximizer02
135
416ms
8 Jun 2024
Collatz
LunaHD24
159
368ms
30 Apr 2024
Collatz
carlosbviteri
208
397ms
25 Apr 2024
Collatz
deancureton
146
368ms
24 Mar 2024
Collatz
SpiritAxolotl
132
366ms
20 Mar 2024
Collatz
msbranicky
145
364ms
9 Jan 2024
Collatz
azka1368
138
382ms
23 Nov 2023
Collatz
Blockyheadman
132
361ms
1 Nov 2023
Collatz
MrGagnonHPS
134
387ms
1 Nov 2023
Collatz
jonah1068
162
374ms
15 Sep 2023
Collatz
crizin
136
382ms
9 Sep 2023
Collatz
aDwarfNamedUrist
150
377ms
30 Aug 2023
Collatz
Pyro569
150
383ms
20 Jul 2023
Collatz
hidude562
155
375ms
21 Jun 2023
Collatz
weber-hge
294
386ms
13 Jun 2023
Collatz
lukashert
129
380ms
7 Jun 2023
Collatz
atazzam
186
406ms
20 May 2023
Collatz
OriEy
135
390ms
27 Apr 2023
Collatz
Koubidoo
383
386ms
21 Mar 2023
Collatz
ToxicP1e
139
369ms
2 Mar 2023
Collatz
Geird
155
380ms
22 Feb 2023
Collatz
SiestaGuru
131
384ms
9 Jan 2023
Collatz
annaproxy
126
345ms
7 Jan 2023
Collatz
Betuaredead
126
364ms
5 Jan 2023
Collatz
retrohun
4,297
378ms
27 Dec 2022
Collatz
Luca2812
127
372ms
12 Dec 2022
Collatz
astdefu
153
392ms
10 Dec 2022
Collatz
Bodo171
194
383ms
1 Dec 2022
Collatz
sonisonjames
171
391ms
26 Nov 2022
Collatz
bidger
153
391ms
13 Nov 2022
Collatz
cnelson20
236
378ms
12 Oct 2022
Collatz
lukemalek
153
380ms
10 Oct 2022
Collatz
kanjurer
168
380ms
29 Sep 2022
Collatz
pyuraii
149
386ms
27 Sep 2022
Collatz
FlorianCassayre
130
373ms
20 Sep 2022
Collatz
KrausRaus
126
372ms
9 Sep 2022
Collatz
eshilo-draper
137
370ms
4 Sep 2022