## Thursday, February 02, 2017

### PoPshow

I will give you a few diagrams with the crucial PoPs (Points of Pressure) highlighted. From there you can start reasoning.

 Diagram 1. White to move
3r1r1k/1p2n1np/p1p2p1Q/6p1/PP1PqN2/1B5R/6PP/5RK1 w - - 1 1
[solution]

The deciding PoP is h7.
It is defended by the black queen.
The black queen is limited in mobility by its Function. It must stay in contact with h7.
How can you breach the contact?

 Diagram 2. White to move
r4rk1/1pq1bpp1/p1b1pn1p/5N2/7B/2PB1Q2/PP3PPP/R3R1K1 w - - 1 1
[solution]

The deciding PoP is e7.
It is defended by the black queen.
The black queen is limited in mobility by its Function. It must stay in contact with e7.
How can you breach the contact?

 Diagram 3. White to move.

2k1r3/2b2R2/1pp2r2/p1p2NN1/P1P3pP/1P5n/5P2/3R3K w - - 1 1
[solution]

There are a lot of problems with the same scenario: you can take a hanging piece for free, but you must defend against a counter attack.
PoP for the counterattack is f2.
How can you take the rook on f6 AND protect f2?

 Diagram 4. White to move

2r5/R2pkp2/2b1p1p1/7p/2PN4/3n1PP1/7P/1R3K2 w - - 1 1
[solution]

The deciding PoP is c6.
It is defended by the black rook.
The black rook is limited in mobility by its Function. It must stay in contact with c6.
How can you breach the contact?

Have a look at the (blitz)rating  of the problems.