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Sanity Check by Heron

Heron

Puzzles, paradoxes, and the fights the internet can't settle. Three minutes a read, no jargon, pick a side first.

40 trivia questions and answers, all worked outTrivia3 min read40 trivia questions and answers, all worked outEvery list hands you the answer on the same line, so your eye beats your brain to it. Forty questions in five rounds, with each answer covered until you commit.HeronBy HeronOct 30, 2026Trivia in three rounds, tiebreaker and allTrivia2 min readTrivia in three rounds, tiebreaker and allTen questions to play right now: a numbers round, a words round, and the tiebreaker where a stated assumption beats a shouted number.HeronBy HeronOct 27, 2026Trivia questions where the answer is printed inside the questionTrivia3 min readTrivia questions where the answer is printed inside the questionMost trivia nights are a memory test, and half the table is out before round two. Fifteen questions that need nothing you were supposed to have read.HeronBy HeronOct 23, 2026Riddles for kids, sorted by age, with a hint before the answerRiddles3 min readRiddles for kids, sorted by age, with a hint before the answerMost of us count the dogs, the cats, and the ducks, then leave our own two legs out of it. Thirteen riddles for kids, six per age band, hints on every card.HeronBy HeronOct 16, 2026The arithmetic sequence formula and the minus one inside itFormulas2 min readThe arithmetic sequence formula and the minus one inside itRow 10 sits nine jumps behind row 1, and most of us multiply by ten. The formula, the sum, and a one-second test that catches the slip.HeronBy HeronOct 13, 202625 riddles with answers where the answer is the cheap partRiddles3 min read25 riddles with answers where the answer is the cheap partThree ducks answer all three lines at once, and most of us add the lines up to five. Twenty-five riddles with answers, plus the move behind each.HeronBy HeronOct 9, 202630 hard riddles for adults where knowing more hurtsRiddles3 min read30 hard riddles for adults where knowing more hurtsA hole hands you three measurements and every one of them is honest. Thirty riddles with answers, and the reason the wrong one felt right.HeronBy HeronOct 6, 2026Multiplication strategies: five moves and when to use eachTimes tables3 min readMultiplication strategies: five moves and when to use eachFive moves cover the whole chart, and a second move checks the first. 8 × 9 comes out 72 three different ways, plus nine questions to practice.HeronBy HeronOct 5, 2026The 6 times table: five of them plus one moreTimes tables3 min readThe 6 times table: five of them plus one moreSix is five plus one, so 6 × 8 is 40 plus 8. The table to 12, the four answers the trick writes out for you, and where the shortcut stops.HeronBy HeronOct 4, 2026The 9 times table: ten of them, minus oneTimes tables3 min readThe 9 times table: ten of them, minus oneNine is ten minus one, so 9 × 6 is 60 take away 6. The table to 12, why the finger trick works, and the five facts that need learning.HeronBy HeronOct 3, 2026The 12 times table: ten of them plus two moreTimes tables3 min readThe 12 times table: ten of them plus two moreA dozen is ten plus two, so 12 × 9 is 90 plus 18. The table to 12, the split, and the one fact on it you have not met before.HeronBy HeronOct 2, 2026The 3 times table: the number plus its doubleTimes tables3 min readThe 3 times table: the number plus its doubleThree is two plus one, so 3 × 9 is 9 plus 18. The table to 12, the trick, and a digit check that catches a wrong answer.HeronBy HeronOct 1, 2026The 4 times table: double it twiceTimes tables3 min readThe 4 times table: double it twiceFour is two twos, so 4 × 9 is 9 doubled twice. The table to 12, the two doubles, and ten questions to practice.HeronBy HeronSep 30, 2026The multiplication tables check: six seconds a questionTimes tables3 min readThe multiplication tables check: six seconds a questionTwenty-five questions, six seconds each, and the limit was chosen so working it out does not fit. The format and ten questions to practice.HeronBy HeronSep 29, 2026The 7 times table: five plus twoTimes tables3 min readThe 7 times table: five plus twoSeven is five and two, so 7 × 8 is 40 plus 16. The table to 12, the split, and ten questions to practice.HeronBy HeronSep 28, 2026The 8 times table: double, double, doubleTimes tables3 min readThe 8 times table: double, double, doubleEight is two doubled twice, so 8 × 7 is 7 doubled three times. The table to 12, the trick, and ten questions to practice.HeronBy HeronSep 27, 202613 Christmas riddles you can solve at the tableRiddles3 min read13 Christmas riddles you can solve at the tableA stable with 14 heads and 40 legs, a tree an inch too tall for the ceiling, and a package that lands four seats short.HeronBy HeronSep 25, 202612 Christmas trivia questions with the math inside themTrivia2 min read12 Christmas trivia questions with the math inside themThe song hands over 364 gifts, a Secret Santa saves 48 of them, and the twelfth day lands earlier than the table thinks.HeronBy HeronSep 22, 202612 logic puzzles that make you prove itLogic3 min read12 logic puzzles that make you prove itTwo islanders who cannot both be lying, a drinks grid that fills itself in, and four cards that hide the only two worth turning.HeronBy HeronSep 18, 202613 Thanksgiving riddles the whole table can solveRiddles2 min read13 Thanksgiving riddles the whole table can solveA bread basket that empties on the third guest, three card tables that lose four seats, and a Christmas that shows up early.HeronBy HeronSep 15, 202615 Halloween trivia questions you can work out at the partyTrivia2 min read15 Halloween trivia questions you can work out at the partyTwo discounts stacked on one costume, a candy bowl that has to reach the whole street, and a haul split three to one.HeronBy HeronSep 11, 202615 Thanksgiving trivia questions for the tableTrivia2 min read15 Thanksgiving trivia questions for the tableA bird that has to be in the oven by 1:30, two pies among seven people, and a pie that is more than twice the pie.HeronBy HeronSep 8, 202630 math puzzles where the fast answer is wrongPuzzles3 min read30 math puzzles where the fast answer is wrongEight balls and one balance scale, a log that needs five cuts, and a room where 99% turns out to be a single person.HeronBy HeronSep 4, 2026The Monty Hall problem: switch, and you win twice as oftenParadoxes3 min readThe Monty Hall problem: switch, and you win twice as oftenPlay the three-door game from the movie 21, then see why switching wins 2 times in 3, and the line Ben brushed off.HeronBy HeronSep 1, 202611 math riddles that fool smart adultsRiddles3 min read11 math riddles that fool smart adultsA snail in a well, a missing dollar, and a brick that weighs itself. The numbers lie first, the wording lies second.HeronBy HeronAug 31, 202613 Halloween riddles that trick your brainRiddles3 min read13 Halloween riddles that trick your brainCandy-math traps, doubling vampires, and classic trick questions. Six warm-ups, then the mean ones.HeronBy HeronAug 30, 20268÷2(2+2) = ? The viral equation that broke the internetViral math3 min read8÷2(2+2) = ? The viral equation that broke the internetHalf the internet picked a side. Both camps have a point, and the real villain has been hiding in plain sight.HeronBy HeronAug 29, 2026