Advanced chess lesson. 1. Weak color complex/Weak king position

Hello, guys!

     Today I'll show you a nice example of weak color complex and weak king.

     This game was played by fourth world chess champion Max Euwe against Salomon Flohr in Amsterdam in 1939. Some people think that Euwe was a "weak" world champion but this example shows that he had tremendous positional understanding.

     The last move by black was queen from d8 to a5 attacking the a2 pawn.

     If you carefully look at this position it's not so hard to notice that:

1. Black have all of their pawns on light squares except the a7 pawn. It means that dark squares in the center and on the king side are weakened.

2. The queen went on vacation to the queenside and the king was left alone.

3. Black have only one piece defending the king which is dark-squared bishop.

4. Light-squared bishop playing the role of a tall pawn, it's undefended and under attack by white rook on d1 via x-ray.

5. If something going to happen with black king rooks also will be useless in defence because they are cut off by f7 pawn which is nailed down to it's current position by white bishop on f6.

6. White on the other hand can use almost all if their pieces in attack on the king side.

     Taking into account all that our plan as white become very clear. Attack on the king side! We already have our queen and dark-squared bishop on the king side but it's not enough to create any real problems for black right now thus we have to bring more pieces into the attack. How?

     I hope you guys enjoyed this little lesson. Please share your thoughts about it in the comments below.
    Cheers and bye for now!