• # Blog

## Eating Black Holes

And we're back with a fresh baked mission straight from the community! So everyone get ready, because we're gonna serve you up something awesome!

two new mission

## "Safe Pawns" Review

Today we will take a look at one of CheckiO's Chess missions "Safe Pawns". I hope you've heard about the ancient game Chess by now. In this mission we will take a closer look at the weakest but most numerous (and maybe even dangerous) chess piece: pawns.

## Empire of Code - Space Strategy Game from CheckiO

Empire of Code: Announcement

## Interesting & Cool Python Projects

Interesting and Cool python projects

## "The Best Number Ever" Review

The mission is simple. Write a function that returns any number. But try to describe why your number is the best. For example, Sheldon Cooper from The Big Bang Theory thinks that 73 is the best number ever and he can explain why.

## PyGame & Python: Writing your first game

PyGame & Python: Writing your first game

## "Verify Anagrams" Review

An anagram is a type of word play, the result of rearranging the letters of a word or phrase to produce a new word or phrase, using all the original letters exactly once. Two words are anagrams to each other if we can get one from another by rearranging the letters. You are given two words or phrase. Try to verify are they anagrams or not.

## Choosing the Best Python IDE

Choosing the Best Python IDE

## "Brackets" Review

Welcome back for another weekly review series! When you open first "Electronic Station" the first mission that you encounter is the classic "Brackets" mission. This is a simple, but interesting and useful mission. "Brackets" can be solved with a wide variety of methods, and CiO players have certainly come up with some clever and ingenious solutions to it.

## Python & Android: Getting Started

Python & Android: Getting Started

## "I Love Python" Overview

On CheckiO we have all sorts of different and challenging missions. Sometimes you just need to solve input-output function. Sometimes it's a round of codeGolf. Sometimes you will play a game with a special score system. But two of these missions are very different. These are more creative writing, or as we call them "code essay" missions.

## Massive Mission Update + #reviewmycode bonus

Today we would like to announce huge mission roster update and something special for our players! Four new missions are here for you to improve your Python skills

## "Feed Pigeons" Review

On our landing page you can find one mission text with solutions. And this is "Feed Pigeons". I'm not sure why but this mission can trouble new players.

## Python-based software & Services #2

Python-based software & Services #2

## "Digit Doublets" Review

Did you know that we have the special island in CheckiO that is devoted by Lewis Carroll? Charles Dodgson (aka Lewis Carroll) was an English writer, mathematician, logician, Anglican deacon and photographer. He also wrote several books with mathemical and logical puzzles.

## Games Of Chance

Today we present our newest chance based mission: "Texas Referee"

## "Roman Numerals" Review

The Republic, Julius Caesar, The Colosseum. Yes, I'm talking about Ancient Rome. A few days ago I read Conn Iggulden's book about Caesar successor, Octavian and remembered the CheckiO mission "Roman Numerals". So let's look revisit this numeral system.

## Guido van Rossum's Code Review #1

Guido van Rossum's Code Review #1

## "Golden Pyramid" Review

Let's look at a classical CS problem that was realised as the Checkio mission. I mean "Golden Pyramid" mission. Consider a triangle of numbers. There is one number in the top of the triangle. On the next level - two numbers, then three and so on. You are start at the top and should down to the bottom of the triangle. For each step down you can move to on of two cell below current. And you "collect" (summarize) passed numbers. Your goal is find the maximum possible sum of numbers for all possible routes from top to bottom.
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