{"id":34675,"date":"2025-12-14T00:00:46","date_gmt":"2025-12-14T08:00:46","guid":{"rendered":"https:\/\/www.gmpuzzles.com\/blog\/?p=34675"},"modified":"2025-12-27T07:28:53","modified_gmt":"2025-12-27T15:28:53","slug":"palindrome-sudoku-by-bill-murphy","status":"publish","type":"post","link":"https:\/\/www.gmpuzzles.com\/blog\/2025\/12\/palindrome-sudoku-by-bill-murphy\/","title":{"rendered":"Palindrome Sudoku by Bill Murphy"},"content":{"rendered":"<p>(This post is part of the <a href=\"https:\/\/www.gmpuzzles.com\/blog\/tag\/gas\/\">Genuinely Approachable Sudoku (GAS)<\/a> series.)<br \/>\n<em>The short palindrome sequences in this puzzle lead to some amazing deductions. Can you figure this GAS puzzle out?<\/em><\/p>\n<p align=\"center\"><img src=https:\/\/www.gmpuzzles.com\/images\/puzzles2025\/251214-PalindromeSudoku-SpikeIsland.png alt=\"Palindrome Sudoku by Bill Murphy\" \/><\/p>\n<p align=\"center\"><a href=\"https:\/\/www.gmpuzzles.com\/images\/puzzles2025\/251214-PalindromeSudoku-SpikeIsland.pdf\">PDF<\/a><\/p>\n<p>or <a href=\"https:\/\/gmpuzzles.com\/s\/251214Spik\">solve online<\/a> (using SudokuPad)<\/p>\n<p><b>Theme:<\/b> Spike Island<\/p>\n<p><b>Author\/Opus:<\/b> This is the 64th puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (<a href=https:\/\/sudokutheory.com\/gas\/>GAS<\/a>) team.<\/p>\n<p><b>Rules:<\/b> Standard Sudoku rules (insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). The numbers along each gray line form a palindrome (i.e., read the same forwards and backwards).<\/p>\n<p><b>GAS Time Standards (highlight to view):<\/b> Two party hats (\ud83c\udfa9\ud83e\udd73): <span style=\"color: white; background-color: white;\">6:30<\/span>; One party hat (\ud83e\udd73): <span style=\"color: white; background-color: white;\">12:00<\/span>. All other solvers earn a \ud83e\udd95: <span style=\"color: white; background-color: white;\">Engaged Euhelopus<\/span>.<\/p>\n<p><b>Thomas Hits the GAS (highlight to view):<\/b> <span style=\"color: white; background-color: white;\">2:28<\/span>, with <a href=https:\/\/www.gmpuzzles.com\/images\/puzzles2025\/sudokupad-Bill_Murph-Spike_Island-a734-d149.replay>SudokuPad replay file<\/a> shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).<\/p>\n<p><b>Solution:<\/b> <a href=\"https:\/\/www.gmpuzzles.com\/images\/puzzles2025\/251214-PalindromeSudoku-SpikeIsland-soln.pdf\">PDF<\/a> and <a href=\"https:\/\/youtu.be\/D0HwYUHsCKI\">solving video<\/a> with explanation from GAS team.<\/p>\n<p><b>Note:<\/b> Follow this link for other less common variations of <a href=\"https:\/\/www.gmpuzzles.com\/blog\/tag\/sudoku-3+variation-2\/\">Sudoku<\/a>.<\/p>\n<p><b>Note 2:<\/b>\u00a0Comments on the blog are great! For a more interactive discussion, please also consider using our\u00a0<a href=\"https:\/\/discord.com\/channels\/1059513302847336469\/1380897111599616020\">Daily GAS discussion<\/a>\u00a0post\u00a0on the GMPuzzles Discord. Not a member of the Discord? Click\u00a0<a href=\"https:\/\/discord.gg\/RNNfEBEbQS\">this link<\/a>\u00a0for basic access.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>(This post is part of the Genuinely Approachable Sudoku (GAS) series.) The short palindrome sequences in this puzzle lead to some amazing deductions. Can you figure this GAS puzzle out? PDF or solve online (using SudokuPad) Theme: Spike Island Author\/Opus: This is the 64th puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) [&hellip;]<\/p>\n","protected":false},"author":443,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,126],"tags":[8,15,56,237],"class_list":["post-34675","post","type-post","status-publish","format-standard","hentry","category-puzzle","category-othersudoku","tag-sudoku-3","tag-wednesdaythursday","tag-variation-2","tag-gas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Palindrome Sudoku by Bill Murphy - The Art of Puzzles<\/title>\n<meta name=\"description\" content=\"The short palindrome sequences in this puzzle lead to some amazing deductions. Can you figure this GAS puzzle out?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gmpuzzles.com\/blog\/2025\/12\/palindrome-sudoku-by-bill-murphy\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Palindrome Sudoku by Bill Murphy - The Art of Puzzles\" \/>\n<meta property=\"og:description\" content=\"The short palindrome sequences in this puzzle lead to some amazing deductions. 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