|Posted by Paul Anderson on June 13, 2016 at 9:15 PM|
Game Of The Week
A couple years back, I came up with a method to organize chess tactics. I called it the DROP Method (http://cschess.webs.com/apps/blog/categories/show/1378181-drop-method). The DROP method is an acronym for the basic kinds of tactics. It is meant to remind you not to drop your pieces and help you get your opponent to drop theirs.
I said that the DROP Method was a work in progress, and it was. So, I thought I would revisit each of the four kinds of chess tactics to provide more examples.
Pin is a chess move that immobilizes an opponent's piece.
The Pin is different from the other kinds of tactics in that it does not create multiple threats. Its main function is to prevent a piece from moving. A Pin on a target allows that target to be attacked by a lower value piece. A Pin on a support allows the capture of the piece the support is guarding.
"The defensive power of a pinned piece is only imaginary."
The Pin works by threatening a low value piece that has a higher value piece behind it. The low value piece is stuck (as if with a pin) to the higher value piece due to the loss of material should the low value piece move and allow the capture of the higher value piece.
If the higher value piece is the King, the low value piece is absolutely immobilized, as the rules of Chess do not allow moves where the King could be captured. Otherwise the Pin is relative, as the opponent can actually move the low value piece if he is willing to accept the loss of material. The other types of Pins are rare:
Here is an example from the Colorado Springs Chess Club's Tuesday night event: June Swiss 90. Larry Turner has played chess in Colorado off and on since 1991, getting his rating as high as 1850. Jerry Mena was playing chess out west in the late nineties before restarting in Colorado in 2013 and racking up 162 USCF-rated games.
Larry caught Jerry in a position that was getting rough for Black. Jerry missed the Pin, and Larry pounced on it.
White to move
See the diagram and answer here:
White found the hole in Black's defense with 21. Be6. Now the Rook on f7 is Pinned to the King and can be captured anytime with the loss of an exchange.
P Is For Pin V
[Event "CSCC June Swiss 90"]
[White "Turner, Larry"]
[Black "Mena, Jerry"]
1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6
6. h3 O-O 7. Nf3 Nbd7 8. Be2 a6 9. a4 Qc7 10. O-O e5 11. dxe6 fxe6 12. Ng5 Ne5
13. f4 Nf7 14. Nxf7 Rxf7 15. Be3 Nd7 16. Qd2 b6 17. Rad1 Bxc3 18. Qxc3 e5 19.
Qd2 Bb7 20. Bg4 Nf6 21. Be6 Nxe4 22. Qe1 Raf8 23. fxe5 Kg7 24. Bxf7 Rxf7 25.
Rxf7+ Qxf7 26. exd6 Qd7 27. Qh4 1-0
This Week In Chess
On June 7th, the Colorado Springs Chess Club held a USCF-rated event (4SS, G/90+30). 8 players joined.
Standings. June Swiss 90
# Name ID Rtng Rd 1 Tot Prize
1 Paul D Anderson 12728345 2047 W7 1.0
2 Larry Turner 10303931 1812 W8 1.0
3 Alexander Freeman 14201087 1756 W5 1.0
4 Dean W Brown 10224098 1513 W6 1.0
5 Peter Barlay 14700831 1887 L3 0.0
6 Mark McGough 11366481 1854 L4 0.0
7 Brian Jo Rountree 12477167 1791 L1 0.0
8 Gerald Mena 12430450 1356 L2 0.0