A brain puzzle every day, answer tucked underneath
A bat and a ball cost $1.10, and the bat costs a dollar more. Most people's first answer is wrong. One puzzle like that in your calendar every morning, answer just below.
Free · no account · updates itself · remove any time · download .ics
What shows up next
What 5-letter word becomes shorter when you add two letters?
Rearrange the letters of LISTEN to make another word.
Next in the series: J, F, M, A, M, J, J, ?
A farmer has 17 sheep. All but 9 run away. How many are left?
What is half of 2 + 2?
Three boxes are labelled Apples, Oranges and Mixed, and every label is wrong. You may pick one fruit from one box. Which box?
Next: 3, 9, 27, 81, ?
Logic puzzles, riddles and number sequences, one per day of the month. They're short enough to solve in line for coffee and tricky enough that you'll want to send one to a friend.
Each event puts the answer below a gap so you can try first. The set repeats monthly, which is handy: next month you can check whether you still remember the trick.
Cognilo: Brain Training Games: A daily set of five short brain puzzles for adults across memory, logic and attention.
Get it free on the App StoreHow to add it on iPhone
- Open this page in Safari on your iPhone.
- Tap Add to iPhone Calendar, then tap Subscribe.
- Tap Add. Events appear in the Calendar app within a minute.
On a Mac, the same button opens Calendar. In Google Calendar, use the Google button, or paste https://honestlittleapps.github.io/calendars/brain-puzzle-of-the-day-calendar/brain-puzzle-daily.ics into Other calendars › From URL.
Questions
How hard are they?
Mostly medium. Classic trick questions, sequences and short logic problems, suitable for teens and adults.
Can I use them in class or at work?
Yes. They make good warm-ups for meetings and lessons.
Is there a game version?
Cognilo is a daily set of five short brain puzzles for adults, across memory, logic and attention.
Is this calendar free?
Yes. It costs nothing, needs no account and shows no ads. You can unsubscribe at any time.
How do I remove it from my iPhone?
Open the Calendar app, tap Calendars at the bottom, tap the ⓘ next to this calendar and choose Delete Calendar. Or go to Settings › Apps › Calendar › Calendar Accounts › Subscribed Calendars.
Other ways to get it
A daily page you can add to your Home Screen · an RSS feed · a free widget for your website · the press kit