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    <title>SolveThose</title>
    <link>https://www.solvethose.com</link>
    <description>A free daily logic puzzle with full step-by-step reasoning — plus a deep, searchable archive of knights &amp; knaves, zebra puzzles, and deduction challenges for every level.</description>
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      <title>MIT Mystery Hunt 2027: Complete Guide to the Ultimate Puzzle Hunt</title>
      <link>https://www.solvethose.com/blog/mit-mystery-hunt-2027-guide</link>
      <description>Prepare for the 2027 MIT Mystery Hunt in Cambridge: team structure, meta-puzzles, extraction techniques, and tools every solver needs.</description>
      <pubDate>Wed, 11 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/mit-mystery-hunt-2027-guide</guid>
      <dc:creator><![CDATA[SolveThose Editorial Team]]></dc:creator>
      <category>Strategy &amp; Guides</category>
      <category>Strategy Guide</category>
      <category>Deduction</category>
      <category>Step By Step</category>
      <category>Puzzle Lore</category>
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    <item>
      <title>Gathering 4 Gardner (G4G16): Guide to the Premier Math &amp; Puzzle Symposium</title>
      <link>https://www.solvethose.com/blog/gathering-4-gardner-16-guide</link>
      <description>Inside Gathering 4 Gardner 16 in Atlanta (March 2027): history, exchange gifts, talks, and how Martin Gardner&apos;s legacy shapes modern logic.</description>
      <pubDate>Tue, 10 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/gathering-4-gardner-16-guide</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Puzzle Lore</category>
      <category>Puzzle Lore</category>
      <category>Self Referential</category>
      <category>Deduction</category>
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      <title>US Puzzle Championship 2027: Rules, Formats &amp; Winning Strategies</title>
      <link>https://www.solvethose.com/blog/us-puzzle-championship-2027-guide</link>
      <description>Your guide to the 2027 US Puzzle Championship (June 19): online format, scoring mechanics, classic puzzle families, and speed tips.</description>
      <pubDate>Mon, 09 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/us-puzzle-championship-2027-guide</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Strategy &amp; Guides</category>
      <category>Strategy Guide</category>
      <category>Logic Grid</category>
      <category>Constraint Satisfaction</category>
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      <title>International Math Olympiad (IMO) 2027: Playbook &amp; Preparation Guide</title>
      <link>https://www.solvethose.com/blog/international-math-olympiad-2027-guide</link>
      <description>Inside the 2027 IMO in Sunshine Coast, Australia (July 10–22): 6-problem format, the four olympiad pillars, and proof strategies.</description>
      <pubDate>Sun, 08 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/international-math-olympiad-2027-guide</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Deduction Logic</category>
      <category>Deduction</category>
      <category>Step By Step</category>
      <category>Constraint Satisfaction</category>
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      <title>World Puzzle Championship (WPC) 2027: Events, Scoring &amp; Training Guide</title>
      <link>https://www.solvethose.com/blog/world-puzzle-championship-2027-guide</link>
      <description>Everything to know about the 2027 World Puzzle Championship in Kraków, Poland (Oct 17–24): individual rounds, team relays, and tactics.</description>
      <pubDate>Sat, 07 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/world-puzzle-championship-2027-guide</guid>
      <dc:creator><![CDATA[SolveThose Editorial Team]]></dc:creator>
      <category>Strategy &amp; Guides</category>
      <category>Strategy Guide</category>
      <category>Logic Grid</category>
      <category>Deduction</category>
      <category>Step By Step</category>
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      <title>World Sudoku Championship (WSC) 2027: Variants, Speed Techniques &amp; Prep</title>
      <link>https://www.solvethose.com/blog/world-sudoku-championship-2027-guide</link>
      <description>Prepare for the 2027 World Sudoku Championship in Kraków (Oct 17–20): classic speed tactics, Killer/Arrow variants, and scanning habits.</description>
      <pubDate>Fri, 06 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/world-sudoku-championship-2027-guide</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Strategy &amp; Guides</category>
      <category>Strategy Guide</category>
      <category>Logic Grid</category>
      <category>Constraint Satisfaction</category>
      <category>Step By Step</category>
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    <item>
      <title>William Lowell Putnam Exam 2027: Format, Classic Gems &amp; How to Train</title>
      <link>https://www.solvethose.com/blog/putnam-competition-2027-guide</link>
      <description>Guide to the 2027 Putnam Mathematical Competition (Dec 4): A1–B6 structure, scoring norms, proof techniques, and smart prep tips.</description>
      <pubDate>Thu, 05 Nov 2026 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/putnam-competition-2027-guide</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Deduction Logic</category>
      <category>Deduction</category>
      <category>Step By Step</category>
      <category>Puzzle Lore</category>
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      <title>Famous Puzzle Constructors Who Shaped Logic</title>
      <link>https://www.solvethose.com/blog/famous-puzzle-constructors</link>
      <description>Meet the famous puzzle constructors who defined the genre — from Carroll and Smullyan to today&apos;s grid masters. Their styles still echo through every daily puzzle.</description>
      <pubDate>Sat, 16 Aug 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/famous-puzzle-constructors</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Puzzle Lore</category>
      <category>Puzzle Lore</category>
      <category>Knights Knaves</category>
      <category>Step By Step</category>
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      <title>Puzzle History: From Antiquity to Daily Habit</title>
      <link>https://www.solvethose.com/blog/puzzle-history</link>
      <description>Logic puzzles stretch back millennia. Trace puzzle history from ancient syllogisms to Smullyan&apos;s islands to today&apos;s daily challenge — and meet the minds behind them.</description>
      <pubDate>Tue, 12 Aug 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/puzzle-history</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Puzzle Lore</category>
      <category>Puzzle Lore</category>
      <category>Step By Step</category>
      <category>Deduction</category>
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      <title>Notation Systems: Track Clues Like a Pro</title>
      <link>https://www.solvethose.com/blog/notation-systems-track-clues</link>
      <description>Good notation turns a messy puzzle into a clean solve. Learn the symbols and grids top solvers use to track truth values, eliminations, and possibilities at a glance.</description>
      <pubDate>Fri, 08 Aug 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/notation-systems-track-clues</guid>
      <dc:creator><![CDATA[Guest Contributor]]></dc:creator>
      <category>Strategy &amp; Guides</category>
      <category>Strategy Guide</category>
      <category>Constraint Satisfaction</category>
      <category>Step By Step</category>
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    <item>
      <title>Strategy Guide: A System for Every Puzzle Type</title>
      <link>https://www.solvethose.com/blog/strategy-guide-puzzle-types</link>
      <description>Every puzzle family has a winning approach. This strategy guide covers knights and knaves, grids, and deduction — giving you a repeatable system for solving each one.</description>
      <pubDate>Mon, 04 Aug 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/strategy-guide-puzzle-types</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Strategy &amp; Guides</category>
      <category>Strategy Guide</category>
      <category>Step By Step</category>
      <category>Deduction</category>
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    <item>
      <title>Warm-Up Puzzles: A Quick Logic Boost</title>
      <link>https://www.solvethose.com/blog/warm-up-puzzles-quick-logic</link>
      <description>A warm-up puzzle is the perfect two-minute brain spark. Try these easy logic mini-puzzles — each with a step-by-step reveal — to get your deduction muscles moving.</description>
      <pubDate>Thu, 31 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/warm-up-puzzles-quick-logic</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Daily Puzzle</category>
      <category>Warm Up</category>
      <category>Daily Challenge</category>
      <category>Step By Step</category>
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    <item>
      <title>Lateral Thinking Riddles: Logic With a Twist</title>
      <link>https://www.solvethose.com/blog/lateral-thinking-riddles</link>
      <description>Lateral thinking riddles reward creative leaps. Learn the questioning techniques that crack them — what to ask, what to assume, and when to abandon the obvious path.</description>
      <pubDate>Sun, 27 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/lateral-thinking-riddles</guid>
      <dc:creator><![CDATA[Guest Contributor]]></dc:creator>
      <category>Lateral &amp; Riddles</category>
      <category>Step By Step</category>
      <category>Deduction</category>
      <category>Warm Up</category>
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    <item>
      <title>Meta Puzzles: Solving Puzzles About Puzzles</title>
      <link>https://www.solvethose.com/blog/meta-puzzles</link>
      <description>Meta puzzles hide their rules inside other puzzles. Learn the layered thinking they demand — how to read clues about clues and find the answer within the answer.</description>
      <pubDate>Wed, 23 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/meta-puzzles</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Meta &amp; Self-Referential</category>
      <category>Self Referential</category>
      <category>Step By Step</category>
      <category>Deduction</category>
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    <item>
      <title>Self-Referential Puzzles: Logic That Talks About Itself</title>
      <link>https://www.solvethose.com/blog/self-referential-puzzles</link>
      <description>Self-referential puzzles bend logic back on itself. Learn how self-describing statements create fascinating paradoxes — and the clean reasoning that resolves them.</description>
      <pubDate>Sat, 19 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/self-referential-puzzles</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Meta &amp; Self-Referential</category>
      <category>Self Referential</category>
      <category>Step By Step</category>
      <category>Deduction</category>
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    <item>
      <title>Lewis Carroll: Puzzles From Wonderland</title>
      <link>https://www.solvethose.com/blog/lewis-carroll-puzzles</link>
      <description>Long before Alice, Lewis Carroll crafted syllogisms and logic puzzles. Discover his witty deduction games, his rules for clear reasoning, and why they still delight.</description>
      <pubDate>Tue, 15 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/lewis-carroll-puzzles</guid>
      <dc:creator><![CDATA[Guest Contributor]]></dc:creator>
      <category>Puzzle Lore</category>
      <category>Puzzle Lore</category>
      <category>Deduction</category>
      <category>Step By Step</category>
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      <title>Smullyan: The Man Who Made Logic Fun</title>
      <link>https://www.solvethose.com/blog/smullyan-logic-puzzles</link>
      <description>Raymond Smullyan turned formal logic into pure play. Explore his knights and knaves islands, self-referential tricks, and the legacy that still shapes puzzle design today.</description>
      <pubDate>Fri, 11 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/smullyan-logic-puzzles</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Puzzle Lore</category>
      <category>Puzzle Lore</category>
      <category>Knights Knaves</category>
      <category>Self Referential</category>
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      <title>Who Owns the Fish? Solving the Classic Clue</title>
      <link>https://www.solvethose.com/blog/who-owns-the-fish</link>
      <description>Who owns the fish? It&apos;s the question at the heart of Einstein&apos;s riddle. Follow our step-by-step deduction as we match pets, houses, and drinks to find the answer.</description>
      <pubDate>Mon, 07 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/who-owns-the-fish</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Deduction Logic</category>
      <category>Einsteins Riddle</category>
      <category>Deduction</category>
      <category>Step By Step</category>
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      <title>Syllogisms Explained: Logic From Two Sentences</title>
      <link>https://www.solvethose.com/blog/syllogisms-explained</link>
      <description>A syllogism builds a conclusion from two premises — and it powers half the deduction puzzles you&apos;ll meet. Learn valid forms, common fallacies, and how to test them.</description>
      <pubDate>Thu, 03 Jul 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/syllogisms-explained</guid>
      <dc:creator><![CDATA[Guest Contributor]]></dc:creator>
      <category>Deduction Logic</category>
      <category>Deduction</category>
      <category>Step By Step</category>
      <category>Logic Grid</category>
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      <title>Constraint Satisfaction: Puzzles Without the Jargon</title>
      <link>https://www.solvethose.com/blog/constraint-satisfaction-puzzles</link>
      <description>Constraint satisfaction sounds technical, but it&apos;s just puzzle logic. Learn how to track rules, eliminate conflicts, and find the one arrangement that fits every clue.</description>
      <pubDate>Sun, 29 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/constraint-satisfaction-puzzles</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Deduction Logic</category>
      <category>Constraint Satisfaction</category>
      <category>Deduction</category>
      <category>Step By Step</category>
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    <item>
      <title>Deduction 101: Thinking in Logical Steps</title>
      <link>https://www.solvethose.com/blog/deduction-101-logical-steps</link>
      <description>Deduction is the engine behind every logic puzzle. Learn the core rules — elimination, contradiction, chain reasoning — and apply them with clear, worked examples.</description>
      <pubDate>Wed, 25 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/deduction-101-logical-steps</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Deduction Logic</category>
      <category>Deduction</category>
      <category>Step By Step</category>
      <category>Constraint Satisfaction</category>
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      <title>The SolveThose Daily Puzzle: Your New Habit</title>
      <link>https://www.solvethose.com/blog/solvethose-daily-puzzle-habit</link>
      <description>One logic puzzle a day keeps the rust away. The SolveThose daily puzzle rotates knights and knaves, grids, and deduction — each with a warm, step-by-step walkthrough.</description>
      <pubDate>Sat, 21 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/solvethose-daily-puzzle-habit</guid>
      <dc:creator><![CDATA[Guest Contributor]]></dc:creator>
      <category>Daily Puzzle</category>
      <category>Daily Challenge</category>
      <category>Step By Step</category>
      <category>Warm Up</category>
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      <title>Logic Grid Puzzles: A Beginner&apos;s Solving Method</title>
      <link>https://www.solvethose.com/blog/logic-grid-puzzles-beginners-method</link>
      <description>Logic grid puzzles are easier than they look. This guide walks through grid setup, marking techniques, and the elimination strategy that cracks even tough grids fast.</description>
      <pubDate>Tue, 17 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/logic-grid-puzzles-beginners-method</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Zebra / Grid Puzzles</category>
      <category>Logic Grid</category>
      <category>Constraint Satisfaction</category>
      <category>Step By Step</category>
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    <item>
      <title>Truth Tellers and Liars: Deduction Made Simple</title>
      <link>https://www.solvethose.com/blog/truth-tellers-and-liars-deduction</link>
      <description>Master truth tellers and liars puzzles with a simple deduction framework. Learn to spot contradictions, test assumptions, and nail the solution every single time.</description>
      <pubDate>Fri, 13 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/truth-tellers-and-liars-deduction</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Knights &amp; Knaves</category>
      <category>Truth Tellers Liars</category>
      <category>Knights Knaves</category>
      <category>Deduction</category>
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      <title>Einstein Riddle Solved: The Five Houses Walkthrough</title>
      <link>https://www.solvethose.com/blog/einstein-riddle-five-houses-walkthrough</link>
      <description>Tackle Einstein&apos;s riddle with a clear, step-by-step breakdown. We set up the five houses, work every clue in order, and reveal who owns the fish — with full reasoning.</description>
      <pubDate>Mon, 09 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/einstein-riddle-five-houses-walkthrough</guid>
      <dc:creator><![CDATA[Guest Contributor]]></dc:creator>
      <category>Zebra / Grid Puzzles</category>
      <category>Einsteins Riddle</category>
      <category>Logic Grid</category>
      <category>Step By Step</category>
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      <title>Zebra Puzzle Basics: How to Solve Logic Grids</title>
      <link>https://www.solvethose.com/blog/zebra-puzzle-basics</link>
      <description>New to zebra puzzles? This friendly walkthrough shows how to set up a logic grid, track clues, and eliminate impossibilities until the full solution clicks into place.</description>
      <pubDate>Thu, 05 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/zebra-puzzle-basics</guid>
      <dc:creator><![CDATA[Priya Natarajan]]></dc:creator>
      <category>Zebra / Grid Puzzles</category>
      <category>Logic Grid</category>
      <category>Einsteins Riddle</category>
      <category>Step By Step</category>
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      <title>Knights and Knaves: A Step-by-Step Logic Guide</title>
      <link>https://www.solvethose.com/blog/knights-and-knaves-step-by-step-guide</link>
      <description>Learn knights and knaves puzzles from scratch. This step-by-step guide breaks down truth-teller logic so you can solve any Smullyan-style island with confidence.</description>
      <pubDate>Sun, 01 Jun 2025 00:00:00 GMT</pubDate>
      <guid>https://www.solvethose.com/blog/knights-and-knaves-step-by-step-guide</guid>
      <dc:creator><![CDATA[Eli Marsh]]></dc:creator>
      <category>Knights &amp; Knaves</category>
      <category>Knights Knaves</category>
      <category>Truth Tellers Liars</category>
      <category>Step By Step</category>
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