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Interesting irrational number

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The world's smallest square maze?

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Can you find a 3x3 white square somewhere in this relatively prime graph?

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Behaviorists hate this trick

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Very small regional Yajilin

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A Trivial Pursuit #10 (Art and Literature 2/4): Bookshelf

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What kind of puzzle is this?

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frog on a number line

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Minimum K for detecting fake pearls in one weighing

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Reducing π to zero (again)

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A Trivial Pursuit #09 (History 2/4): Windows 7

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16 queens puzzle

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Numbers that are averages of their digits

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Regional Business

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Before the Common Era

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Build-an-Animal Workshop

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Comprised of both

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A simple 5x5 crossword

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Genius Belt; What am I?

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Don't let 'em die!

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Continue the Pattern #7

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Waffleing my Egg

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Nonogram with story

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Permutations with given longest increasing subsequence

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How many 4x4 Latin Squares are there?

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What is the next term in the sequence 3, 1, -7, 41?

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Find the best play on each board

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Logic and Geometry Problem #5: does Savage Go have cycles?

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"Pawn Placement" - a GCHQ word association puzzle (video game edition)

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Cheese from Denmark

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Chess 960 and Castling #2

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Futuristic navigation

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Golden Ape Peculiarity

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Chess 960 and Castling #1

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What does my wife want (again)?

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Can't overthink my daunting, challenging ask

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Next term in sequence

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Two Sheriffs and Eavesdroppers - 3

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Progressive matrix: lines of spades with different orientations

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A three-stage puzzle

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The Mono-Quantum Condrum

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Good cipher with a "password"?

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Continue the squence of hexagons

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What is in the middle?

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Can you find the missing letters?

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How can I visualize the Mastermorphix 3x3 modification?

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