The Tower of Hanoi hole will go live in approximately 30 mins. Why not try and solve it ahead of time?
All holes in PHP in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 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) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort 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 Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial All Languages ><> 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 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) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort 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 Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Holes Points Bytes Submitted 524th galloj 🇨🇿 1 691 81 21 Sep 2022 527th p-vf 🇨🇭 1 687 67 25 Oct 2021 528th j55d 1 685 54 16 Apr 2019 529th timkelleher 1 683 82 17 Apr 2020 529th lucien144 1 683 82 28 Apr 2020 529th sawadee222 1 683 82 24 Feb 2023 529th copoer 1 683 82 27 Feb 2023 529th taylorsreid 1 683 82 22 Mar 2024 529th jakk64 1 683 82 14 Nov 2024 535th Isaac-Metthez 1 682 107 20 Dec 2023 536th gauthier 1 680 50 17 Nov 2017 536th ArmaanAS 1 680 50 8 Mar 2021 536th kayahr 1 680 50 18 Jun 2021 536th wh3n3v3r 🇨🇿 1 680 50 15 Nov 2024 540th rifatx 2 676 1,082 23 Jul 2024 541st alxydu 2 674 471 3 Apr 2023 542nd rossey 1 671 617 7 Nov 2024 543rd RossBambrey 1 670 88 21 Nov 2023 544th TheRealOhead 🇺🇸 1 667 51 23 Nov 2022 544th CheeseCake628 🇳🇴 1 667 51 11 Mar 2023 546th ForkKILLET 🇨🇳 1 667 54 18 Feb 2021 547th loganmacdougall 🇨🇦 1 667 84 12 Nov 2021 548th cnelson20 1 662 65 8 Aug 2022 549th fat-max 1 662 74 28 Sep 2018 550th oussa141 2 661 2,526 24 Feb 2023 551st deejayy 1 659 85 1 May 2019 551st jackkav 1 659 85 10 May 2019 551st isaiah0311 1 659 85 15 Feb 2023 551st Itnug 1 659 85 19 Jul 2023 555th olleicua 🇺🇸 2 658 1,072 10 Mar 2024 556th kmathis22 1 656 90 10 Sep 2025 557th Andrey2001 1 654 52 6 days ago 558th pradeep-sanjaya 1 652 635 11 Sep 2019 559th dsntzn 🇸🇰 1 651 86 13 Oct 2020 559th Europe2048 1 651 86 20 Oct 2024 561st joegreen88 2 650 406 8 Nov 2017 562nd peter-walter 1 649 57 29 Oct 2021 563rd ConorOBrien-Foxx 1 646 65 2 Mar 2019 564th NJRist 🇺🇸 1 644 87 25 Nov 2022 564th quimey 1 644 87 23 Mar 2023 564th arctouch-cristiannevianna 1 644 87 26 Sep 2023 564th volpi-m 🇫🇷 1 644 87 19 Mar 2024 568th AgathokakologicalBit 1 643 56 14 Jul 2019 568th doge1338 1 643 56 15 Dec 2020 568th RYNO8 1 643 56 8 Aug 2021 568th VilBoub 1 643 56 20 Apr 2022 568th 4hg 🇺🇸 1 643 56 17 Oct 2022 568th trist224 🇫🇷 1 643 56 28 Nov 2022 568th weliveinhell 🇭🇹 1 643 56 3 Sep 2023 575th bastienvoirin 🇫🇷 1 642 53 30 Nov 2020 575th Bobini1 🇵🇱 1 642 53 29 Oct 2021 575th mathisfun271 1 642 53 20 Feb 2024 578th islonely 1 639 72 26 Apr 2019 578th heypwesto 🇳🇿 1 639 72 12 Apr 2021 578th qewdweftr4g 1 639 72 16 Oct 2024 581st dieckie 1 636 77 28 Feb 2019 581st BritishWerewolf 1 636 77 16 May 2019 583rd frankgraziano 1 636 88 3 Dec 2020 584th anywherecreative 1 635 315 10 Jun 2022 585th markbyrne 1 631 317 20 Nov 2021 586th tjtnorton 1 630 54 11 Dec 2018 586th ashtraypettingzoo 🇺🇸 1 630 54 16 Feb 2023 586th desecaw13 1 630 54 24 Jan 2025 589th h0n3ycl0ud 1 630 73 29 Jul 2019 590th pavarnos 1 627 319 9 Nov 2022 591st UBKorkut 2 626 2,022 10 Mar 2021 592nd kristian-94 1 622 90 23 Jan 2021 592nd orifu 1 622 90 22 Feb 2021 592nd charlienaud 1 622 90 9 Dec 2022 595th ridingqwerty 🇺🇸 1 620 79 11 Jul 2022 596th razetime 1 620 121 24 Jan 2022 597th Just4FunCoder 1 618 55 26 Aug 2024 598th andrefecto 1 615 91 24 Mar 2019 598th NielsEduwiki 1 615 91 20 Feb 2020 600th ArturLukianov 2 614 1,110 16 Dec 2020 First Prev 526–600 of 869 Next Last