-
Blog
Simplifying Polynomials, Hacking Santa and CheckiO's Hardest Mission Yet!
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_33_copy.png)
We've got three new missions and it's International Programmer day!
This Week In Python: Quantum datetime Travel
datetime, Quantum Mechanics, and Building tools, this week in Python!
This week in Python: Code of +6 Efficiency
This one goes out to all you fans of code efficiency.
CheckiO Ghost missions: Start playing now!
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/ship.png)
We've got two ghost missions out there haunting the seas of CheckiO!
Haunted Seas
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_31-2_copy.png)
What's old is new again, we've got a few reincarnations of old missions with a fresh new twist. It's almost as if your old favorites are coming back to haunt you!
This Week in Python 8/23: Coding for the Fun of it
XKCD in the wild, modding The Sims, skin detection and more, in This Week in Python!
The O'Reilly Golf Challenge
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/text-golf-off.png)
Go play O'Reilly Media's Text Holes Golf mission to win something awesome for yourself!
Burning for a Python Challenge
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_30-3.png)
In the spirit of the infamous Burning Man Festival next week, I've put together an odd bunch of missions for you to prove your skill in!
Left Hands and Lanterns
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_29-3.png)
Today is International Left-handers day, so, for an additional challenge, complete these new missions using only your left hand!
Exploring the Infinite
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_282.png)
This Friday, August 8th is International Infinity Day, and we've got a finite number of missions ready to celebrate!
Scoring Concert Tickets with Code
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/python-logo.png)
Python is Now the Most Popular Introductory Teaching Language at Top U.S. Universities and more!
CheckiO Chess Week
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_27_copy.png)
Hopefully you haven’t pawned off your chess skills for your python skills, because this week is all about the most dangerous game in celebration of last week’s International Chess Day!
Abra Kadabra Alakazam! *Poof* Dominoes!
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_26_copy.png)
Summer's in full swing and so are our world builders! We've got three new missions for you this week!
Secret Mission: Break PEP8
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n_25_2.png)
I have a new mission for you. It's going to be a challenge, but I believe you're up to the task.
Everything you need to know about hints!
![](https://d17mnqrx9pmt3e.cloudfront.net/media/blog/share/n24_boats.png)
We know CheckiO users have been excited to add hints to the game, and we’d like to explain how they’re going to work moving forward. We certainly didn’t want hints to ruin the challenge or fun for users. So we’ve made hints a form of conversation between one or more mission authors.
Engage 4 new missions and awesome video!
It’s a bundle of mission this week! Which one are you going to tackle first?