Recent puzzles
Javelin toss
How should you counter the tosser who doesn't know you know they're cheating?
Can you fling the fractal darts?
How many points will you asymptotically approach?
Garden hose
How far is the thirsty random tree from the gushing random hose?
Randy hall
How should you move in order to be unpredictable?
Robot baseball
How common can league office scheming rig full counts to be?
High low
Where will you be when you can't stop winning?
Archive
Javelin toss
How should you counter the tosser who doesn't know you know they're cheating?
Covariant derivative
Where does it come form, how do we find it?
First passage time
How long until a particle diffuses to $x$?
Can you fling the fractal darts?
How many points will you asymptotically approach?
Garden hose
How far is the thirsty random tree from the gushing random hose?
Randy hall
How should you move in order to be unpredictable?
Robot baseball
How common can league office scheming rig full counts to be?
High low
Where will you be when you can't stop winning?
Robot road trip
How much time will you lose avoiding a tragic collision?
Can you meet me at the mall?
What is the greatest number of friends you're likely to meet if nobody deigns to coordinate?
Can you weave the web?
What is the probability that two random points form a line that goes through a particular point $\mathbf{p}$?
How long is the river?
What should we expect from coincidental diagonals of contiguous spaces?
Can you permeate the bipyramid?
How many paths can you find?
How many rides can you reserve?
How many rides will you get if you throw Mickey a little money on the side?
Sum one, somewhere
What's the chance the somebody comes across just zero or one labels on an unending walk down a binary tree with nodes randomly blessed with a label?
Hammer golf
Live by the hammer, die by the hammer.
Infinite march madness
How often will the $1$-seed make the final four when there are $(2^d-1)$ worse teams in their region?
Diametric shore
If you wake up in a random spot on a semi-circular island, how far is the beach, probably?
Can you spin the graph?
If you tumble your function is it still a function?
Can you hop to the lily pad?
The further you go, the harder it gets.
Lines of equidistance
What's the chance that two random points in the square are equidistant from some random point on the side that's closest to one of them?
Stable tiles
How to defy the laws of physics in service of age 3+ entertainment.
Peloton leaderboard
How great will you be if you're average in the middle?
Tree-edge triage
Can you taunt your friend forever?
Drifting around
How often will the round of the sums be the sum of the rounds?
Judging judging
How often are we penalizing our bravest gymnasts?
Lose to win
Can you lose the points while winning the match?
Can you witness an epic collapse?
How often will Indianapolis get its dreams crushed?
Interview line splitting
What is the sum of the products of endless division?
The radius of a rectangle
What would the world look like if you could only see squares?
Can you beat the heats?
A good old racetrack whodunit.
Capture the flag
How often can you win when you have a number and they have an arrow?
Card collisions
What's the chance no card sees its own reflection?
Paint by number
Cluster your expectations
Pick a circle, any circle
What chance is there, for a circle inside a square?
Traffic light chase
How long until you meet your menacing assailant?
Pinball lights
How many shots does it take to turn the lights on?
Unbalanced league
How often will geography rob your team of a playoff berth?
Cool weave curve
What shape is the margin doodle?
Buffon's prism
If you throw a rod into a jelly lattice, what is the chance it crosses just one wall?
Twisted balkanization
How many different adventures does the Mobius prism have in store?
A chancy race
Will the coiners flip before you roll?
Take a number
When should you stop dreaming of a brighter future?
Save the world
Good use of polling or bad use of polling?
Hard choices for the easter bunny
Hoppity hop, which carton are you going to get?
Left handed sister
Are you talking to some brother, or the brother?
Robot long jump
Jump late, and long, but not too late.
NCAA quota bracket
I'll take one of each.
Fast times at the marble track
It won't be long before this marble's at your door
Sicilian solitaire
There's nothing to do and there's nothing to win
The chance in our stars
A cool puzzle for planes that fly at $\approx 0\,\text{mph}.$
Keep on singing
Will you get to zero bottles of beer on the wall before someone loses their cool?
Chain of squares
How long can you keep your square away from the covetous origin?
Drone delivery
How much shorter as the crow flies?
The dark forest
How long will you wait to get off your assemblers?
Secret santa administrivia
How long must you wait to pawn your candle off on some poor relative?
Soccer brackets
Who will win when anything is possible?
Soccer buses
How many trips will the poor saps have to make?
Reasonable sandwich
How often will the hand of fate deliver a reasonable slice to the undercard?
Speedy hammer
Will the giant hammer be going fast enough when it hits the big elf door?
Fall colors
When's the best time to go leaf peeping?
Neurotic halloween
How close can you get to perfect candy disbursement?
Loteria lightning
One solitary soul won Mexican bingo, what are the chances?
Birthday collisions
How many people in this room have stolen your birthday?
Sock wash
Will you be able to fit all your lonely socks on the chair?
Letters from the sea
How many letters are you going to have to read?
Too many anigrams
How many generations of humanity will pass before anigrams has a repeat?
Traffic groups
How many will go as fast as they want if everyone goes as fast as they want?
Morning walkabout
Will the friendly ant have an unusual experience?
Hide and go seek tower
Now you see me, now you don't
Goat tower penthouse
What's the chance this unlucky entrepreneur will have to finance a goat party?
Colorful balls
How many do they have?
Grasshopper jumps
Where will you find this beautiful and mysterious creature?
Introverts' exodus
Can you get some privacy on your last walk into the great beyond?
Sag A* alignment
Here's lookin' at you kid.
Different dice
Get absorbed by these dice.
Broken elevator
How many times will you press the broken button?
Antipersistent basketball
Who will win if nobody cares until they're losing?
A gem of a time
How many gems will you spend on the way to the top?
Rotating light
How much light can you spin with a series of filters?
Calendrical oil change
How fresh is the oil in your jalopy if you only change a quart per month?
Hat hostage strategies II
Can the ghost of Darwin get you out of this bind?
Stick it to the genie
How much can you bilk the genie for?
Robot races
How can you break from the crystalline grip of Nash equilibrists?
Squid game
How many will die crossing this entropic bridge?
Genetic triangles
Will a random baby triangle cover the center of its equilateral parent?
Free pete rose
Guess what happens in two world series games to win it all.
Doppelganger standoff
You're being stalked by a replica who's twice as fast and a genius at hiding behind light poles. Where could they be?
Strip paper
How many random cuts before a sheet turns into all strips?
Robot tug of war
Where should the rope start to make robot tug of war fair?
$t$ is for tackle
How fast must you sprint to tackle a $15\,\text{mph}$ returner?
Uniform dice
How close to uniform can you make the sum of two loaded die?
Maximum dice
How high can your score get with optimal freeze-and-reroll?
Things have chained
What curve does an infinite shrinking chain trace?
Random rock climb
How many random holds until a $10\,\text{m}$ wall is climbable?
Robot weightlifters
How should three robot lifters choose weights to maximize their odds to win?
Survivor
Who survives the race-to-20 counting game?
Cornhole connoisseur
Who should throw when you need exactly three points to win?
Election comeback
What's the chance of a comeback when late ballots lean your way?
Crescent observatory
How much quicker does the Moon brighten at half than at a slim crescent?
A permutation most foul
How many foul-shot orders tie for best in a quirky 3-on-3?
Mike trout numerology
Can a batting average’s first digits match games played?
Multiverse carpentry
How many universes spawn from every possible staircase order?
Random reverse jenga
How tall can reverse Jenga get before it tumbles?
Random towers
How many moves until random Tower of Hanoi finishes?
Gaussian skiers
How safe are you for winning the first heat?
Hit the bullseye, kind of
How long can your closer-and-closer dart streak last?
Living on the edge
What are the odds the secret-password coaster falls in?
Hat hostage strategies
Can two rows of captives guarantee a hat-color win?
Pass the cranberry sauce
Where do you drop the sauce so Uncle Zach gets it last?
Total collapse
How often does a 99% coin-flip favorite implode?
Final jeopardy
Which board order wins more money if you ace every clue?
Fair unfair coins
For how many biases can three flips fake a fair coin?
Not a Marathon
Which treadmill run is faster: steady pace or end-of-run sprint?
It's pumpkin time
When does David S. Pumpkins boot you from the circle?
The battle of Los Angeles
Can LeBron steal enough to beat AD in king of the court?
Simple runoff elections
How often do random elections force a runoff?
The price is wrong
How do you bid when no one knows any prices anymore?
A tale of two u-turns
How tight a turn saves the stranded grocery run?
Wordly wise
How many guesses to find the secret word in a giant dictionary?
Tour de 538
How bad is a bike race when your teammate rage-quits?
An end to war
How many lifetimes to see a flawless War victory?
Broken ruler
When your ruler shatters, where does the 6-inch shard fall?
Nematode addition
How reliable is worm math when your CPU is a petri dish?
Frustrated graduation
What’s the smallest class where musical chairs always fails?
A trip down rubber band road
How long should hare wait on a magically stretching road?
Trillions of toy towers
How many ways can baby architects stack these tapering rings?
Social distance swimming pool
How many swimmers get waved off in the pandemic pool rush?
Knockoff polygons
How many look-alike polygons can you squeeze from one dot set?
Golden sphere inheritance
How do you split a solid gold sphere fairly?
Bacterial collapse
Will these reckless microbes form a dynasty or disappear from the annals of history?
Sign markers
Where do you dot to keep the ink perfectly even?
Wherefore art thou superzoomer
What’s the chance one caller overlaps everyone on Zoom?
State fish
Can every state land its own perfect fish?
Spam attack
How long until spam buries the inbox?
Flipping coins to freedom
How do you survive 100 flips with two risky coins?
Fast spelling bee
Can you build the ultimate Spelling Bee board?
No posts match those filters.