Reverse Polish Notation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 Calendar Connect Four 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 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 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 Erlang 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 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 Erlang 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 Calendar Connect Four 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 Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 523rd SiBeepBoop 711 103 15ms 15 Apr 2025 527th kg583 🇺🇸 711 145 7ms 9 Jun 2025 528th stefangimmillaro 711 192 401ms 10 Oct 2023 529th Shanethegamer 🇺🇸 710 138 2ms 12 Feb 2022 530th weeble 709 138 6ms 18 Aug 2024 531st JohandeRuiter 🇳🇱 707 164 2ms 11 Feb 2025 532nd albanian-laundromat 706 103 3,916ms 10 days ago 533rd edsrzf 🇳🇿 705 184 1,460ms 29 Apr 2025 534th janbehrens 🇩🇪 704 104 10ms 14 Apr 2023 534th m-tkach 🇺🇦 704 104 11ms 3 Jan 2025 534th dokutan 704 104 14ms 15 Jun 2025 537th prplz 🇦🇺 703 165 2ms 14 Feb 2022 537th Szum123321 🇵🇱 703 165 2ms 29 Nov 2023 539th CaedenHarper 🇨🇦 703 260 257ms 2 days ago 540th AlephSquirrel 702 37 4ms 3 Aug 2023 541st GrayJoKing 🇦🇺 702 60 1,361ms 8 May 2022 542nd albanian-laundromat 700 355 890ms 13 days ago 543rd stefangimmillaro 699 57 40ms 18 Feb 2022 543rd tatzyr 🇯🇵 699 57 52ms 26 Feb 2025 545th Alex-x90 🇺🇸 699 166 2ms 8 Feb 2023 546th JunkIce 698 95 466ms 3 Dec 2024 547th stefangimmillaro 698 262 286ms 5 May 2025 547th edsrzf 🇳🇿 698 262 248ms 10 Jun 2025 549th Mandrzejy 🇵🇱 695 167 2ms 3 Nov 2024 550th stefangimmillaro 694 193 3,495ms 12 Nov 2024 551st Sp3000 🇦🇺 693 41 4ms 19 Jan 2024 551st MeWhenI 🇻🇦 693 41 6ms 2 Mar 2025 553rd lifthrasiir 🇰🇷 691 50 2ms 28 Nov 2024 554th KatieLG 🇬🇧 691 96 492ms 28 Oct 2024 555th KingSkyrock 🇺🇸 691 106 11ms 17 Mar 2022 556th emgordon154 689 118 1,078ms 3 Dec 2024 557th CaedenHarper 🇨🇦 689 231 427ms 5 Oct 2025 558th Ripick 688 186 342ms 24 Jun 2025 559th Shanethegamer 🇺🇸 686 58 38ms 13 Feb 2022 559th SirBogman 🇺🇸 686 58 59ms 10 Jan 2024 561st ian-h-chamberlain 🇺🇸 686 272 204ms 5 Jul 2022 562nd MathisBullinger 685 107 10ms 11 May 2022 562nd CaedenHarper 🇨🇦 685 107 13ms 23 Aug 2025 564th edsrzf 🇳🇿 684 38 4ms 21 days ago 565th nwellnhof 🇩🇪 683 110 560ms 24 May 2022 565th AlephSquirrel 683 110 259ms 29 May 2023 565th 5cw 🇺🇸 683 110 295ms 9 May 2024 565th Seek64 🇩🇪 683 110 462ms 13 Sep 2024 569th iakolzin 681 205 65ms 1 Jul 2022 570th revlayle 🇺🇸 679 201 352ms 9 Dec 2022 571st CatsAreFluffy 678 206 68ms 24 Feb 2023 572nd roavin 676 202 370ms 30 Jun 2022 573rd shinh 675 59 39ms 21 Jun 2022 574th 386asm 🇺🇸 675 222 51ms 5 May 2023 575th janbehrens 🇩🇪 674 199 491ms 26 Mar 2022 576th edsrzf 🇳🇿 673 124 4ms 6 Oct 2025 577th randolchance 672 109 9ms 4 Jan 2024 578th Mikey-Beep 🇬🇧 672 203 400ms 2 Sep 2024 578th tomh1012 672 203 348ms 5 Sep 2025 580th MeWhenI 🇻🇦 670 112 268ms 22 May 2024 581st MeWhenI 🇻🇦 670 146 8ms 13 Aug 2024 582nd Natanaelel 🇸🇪 668 86 37ms 29 Jan 2024 583rd janbehrens 🇩🇪 667 6 68ms 25 Nov 2022 584th alemelis 666 101 816ms 26 Aug 2024 585th Shanethegamer 🇺🇸 665 61 6ms 13 Feb 2022 586th xnor-gate 665 113 48ms 14 Feb 2022 587th Garklein 🇨🇦 664 52 3ms 13 Feb 2022 587th Natanaelel 🇸🇪 664 52 2ms 14 Jul 2023 587th SirBogman 🇺🇸 664 52 3ms 6 Nov 2023 590th janbehrens 🇩🇪 663 206 346ms 26 Feb 2022 591st oeb25 662 282 211ms 16 May 2022 592nd two-bad 🇬🇧 660 111 9ms 25 Feb 2024 593rd jmerle 🇳🇱 659 114 21ms 15 Feb 2023 594th billings7 🇬🇧 659 207 343ms 16 Apr 2022 595th Shanethegamer 🇺🇸 658 122 11ms 12 Apr 2024 596th h3ra993huskp 🇯🇵 658 242 320ms 2 Jun 2024 597th edsrzf 🇳🇿 657 282 6ms 20 Feb 2025 598th m-tkach 🇺🇦 656 101 483ms 21 Jan 2024 599th jgbaldwinbrown 656 177 2ms 15 Jun 2022 600th rniii 653 61 49ms 15 Sep 2023 First Prev 526–600 of 1,118 Next Last