Chess Middlegame IV course composed by GM Alexander Kalinin is aimed at teaching a student much of the middlegame methods and intricacies through a theoretical section. Openings: Two Knights' defense, Sicilian defense (Richter-Rauzer attack), French defense (3. e5 and 3. Nc3 Nf6 4. Bg5 variations), Caro-Kann defense (3.e5 var.), English defense etc.

This course is in the series Chess King Learn (https://learn.chessking.com/), 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.

The program also contains a theoretical section, which explains the methods of the game in a certain stage of the game, based on actual examples. The theory is presented in an interactive way, which means you can not only read the text of the lessons, but also to make moves on the board and work out unclear moves on the board.

Advantages of the program:
\342\231\224 High quality examples, all double-checked for correctness
\342\231\224 You need to enter all key moves, required by the teacher
\342\231\224 Different levels of complexity of the tasks
\342\231\224 Various goals, which need to be reached in the problems
\342\231\224 The program gives hint if an error is made
\342\231\224 For typical mistaken moves, the refutation is shown
\342\231\224 You can play out any position of the tasks against the computer
\342\231\224 Interactive theoretical lessons
\342\231\224 Structured table of contents
\342\231\224 The program monitors the change in the rating (ELO) of the player during the learning process
\342\231\224 Test mode with flexible settings
\342\231\224 Possibility to bookmark favorite exercises
\342\231\224 The application is adapted to the bigger screen of a tablet
\342\231\224 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. Ruy lopez
1.1. Ruy lopez
1.2. Ruy Lopez. Jaenisch gambit
1.3. Ruy Lopez. Arkhangelsk variation
2. Two Knights game
2.1. Two Knights game
2.2. 4. Ng5
2.3. 4. d4
3. French defense
3.1. French defense
3.2. French defense 3. e5
3.3. Classic variation 3. Nc3 Nf6
4. Sicilian defense. Richter - Ra Variation
4.1. Sicilian defense. Richter - Ra variation
4.2. 6. ... e6 7. Qd2 Be7
4.3. 7. ...h6
4.4. 7. ... a6
5. Caro-Kann defense. Advance variation
6. King's indian defense
6.1. King's indian defense
6.2. Saemisch system
6.3. Classical system
6.4. Fianchetto variation
6.5. Averbakh system
7. Nimzo-indian defense. Rubinstein system
7.1. Nimzo-indian defense. Rubinstein system
7.2. 4. .. b6
7.3. 4. .... c5
7.4. 4. ... 0-0
8. Slav defense
8.1. Slav defense
8.2. 4. ... dxc4
8.3. Chebanenko variation 4...a7-a6
9. Tartakower - (Makagonov-Bondarevsky) system
10. English opening
10.1. English opening
10.2. 4. ... e5 5. Nb5 d5 6. cxd5 Bc5
10.3. 4. ... e6 5. g3 d5 6. Bg2 e5 7. Nf3 d4
11. Hanham variation against 1.d4
11.1. Hanham variation against 1.d4
11.2. Development the bishop on e2
11.3. Development the bishop on g2

// Option A // q4a1w

To Chess Middlegame IV mod from happymod.freeflix.info.
You need enable the option "Unknown Sources".
1. Click on the above link to Chess Middlegame IV mod APK.
2. Save the file in your device s folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B // 55m4l

To Chess Middlegame IV from HappyMod APP, you can follow this:
1. Open your browser and the HappyMod APK file from happymod.freeflix.info - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android s and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Chess Middlegame IV in HappyMod App.

Why does the app say I have no internet connection? x3b7

This issue may occur due to temporary server problems or app glitches. Ensure your device is connected to a stable internet connection.

What should I do if the app is lagging? 534r2y

Lagging can be caused by insufficient device resources. Try closing other apps or restarting your device to improve performance.

Why can't I effects? 3i5464

ing effects may fail due to network issues or server problems. Check your internet connection and try again later.

How can I fix the network issue while using a VPN? 6j254o

Sometimes, VPNs can interfere with app connectivity. Try disconnecting the VPN and see if the app works without it.

What can I do if the app keeps crashing? 5m6h5p

If the app crashes frequently, consider clearing the app cache or reinstalling it to resolve potential bugs.

Why can't I access AI modes in the app? x1s2g

AI modes may require a stable internet connection. Ensure your connection is strong and try again.

If AI modes are not accessible, it could be due to server issues or your internet connection. Check if other apps are working properly. If they are, the issue might be with the app itself.

Steps to resolve:
1. Check your internet connection by opening a web browser.
2. Restart your device to refresh the network settings.
3. Open the app again and try accessing the AI modes.

What should I do if the app is not ing templates? 31692a

If templates are not ing, it may be due to a poor internet connection or server issues. Check your connection and try again later.

Why does the app keep saying 'no internet' even with a connection? n472j

This could be a bug in the app or a temporary server issue. Restarting the app or your device may help resolve this.

Persistent 'no internet' messages can indicate a problem with the app's ability to connect to its servers. Restarting can refresh the app's connection attempt.

Steps to resolve:
1. Close the app completely.
2. Restart your device.
3. Reopen the app and check the connection.

Why does the app crash when importing 4K videos? 5cf6t

The app may crash due to high resource demands when handling 4K videos. Try using lower resolution files for smoother editing.

4K videos require more processing power and memory. If your device is not equipped to handle such high-resolution files, it may lead to crashes.

What should I do if I keep getting network errors? 2t5n3j

Network errors can occur due to unstable internet connections. Try switching to a different network or resetting your router.

Network issues can disrupt the app's functionality. A stable connection is essential for smooth operation, especially when using online features.