What is the Elementary Chess Tactics II game, how does it work?

According to the introduction of Chess King, Elementary Chess Tactics II is a Board game on the Android platform. There is currently a new version released on Jun 16, 2017, you can see the details below.

If you are a beginner, it is necessary for you to study simple tactical methods and learn how to employ them! This course includes more than 1800 exercises for beginners on the following tactical methods: 'annihilation of defense', 'decoy', 'interception' and 'distraction'.

This course is in the series Chess King Learn (http://chessking.com/guide/android/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middle game, and endgame, split by levels from beginners to experienced players, and even professional players.

With the help of this course, you can improve your chess knowledge, learn new tactical tricks and combinations, and consolidate the acquired knowledge into practice.

The program acts as a coach who gives tasks to solve and helps to solve them if you get stuck. It will give you hints, explanations and show you even striking refutation of the mistakes you might make.

Advantages of the program:
♔ High quality examples, all double-checked for correctness
♔ You need to enter all key moves, required by the teacher
♔ Different levels of complexity of the tasks
♔ Various goals, which need to be reached in the problems
♔ The program gives hint if an error is made
♔ For typical mistaken moves, the refutation is shown
♔ You can play out any position of the tasks against the computer
♔ Interactive theoretical lessons
♔ Structured table of contents
♔ The program monitors the change in the rating (ELO) of the player during the learning process
♔ Test mode with flexible settings
♔ Possibility to bookmark favorite exercises
♔ The application is adapted to the bigger screen of a tablet
♔ The application does not require an internet connection

The course includes a free part, in which you can test the program. Lessons offered in the free version is fully functional. They allow you to test the application in real world conditions before releasing the following topics:
1. Annihilation of defense of a piece
1.1. Level 3
1.2. Level 4
1.3. Level 5
1.4. Level 6
1.5. Level 7
1.6. Level 8
1.7. Level 9
1.8. Level 10
1.9. Level 11
1.10. Level 12
1.11. Level 13
1.12. Level 14
2. Annihilation of an important square defense
2.1. Level 7
2.2. Level 8
2.3. Level 9
2.4. Level 10
2.5. Level 11
2.6. Level 12
2.7. Level 13
2.8. Level 14
2.9. Level 15
2.10. Level 16
2.11. Level 17
3. Decoy of a king to a mating net
3.1. Level 5
3.2. Level 6
3.3. Level 7
3.4. Level 8
3.5. Level 9
3.6. Level 10
3.7. Level 11
3.8. Level 12
4. Decoy to a knight fork
4.1. Level 3
4.2. Level 4
4.3. Level 5
4.4. Level 6
4.5. Level 7
4.6. Level 8
4.7. Level 9
4.8. Level 10
4.9. Level 11
4.10. Level 12
5. Intercepting a piece defending other piece
5.1. Level 3
5.2. Level 4
5.3. Level 5
5.4. Level 6
5.5. Level 7
5.6. Level 8
5.7. Level 9
5.8. Level 10
5.9. Level 11
6. Distracting a piece defending other piece
6.1. Level 5
6.2. Level 6
6.3. Level 7
6.4. Level 8
6.5. Level 9
6.6. Level 10
6.7. Level 11
6.8. Level 12
6.9. Level 13

What's new in version new * Invert board option is replaced by on-board gesture
* Added "Auto next" option - automatically switch to the next exercise
* Added UCI engine support
* Added ability to navigate through lesson using swipe gestures on notation
* Added chess symbols convention
* Added "Copy PGN" option
* Added "Clear statistics" option
* Improved current theme and subtheme storing
* Various fixes and improvements