|Posted by Paul Anderson on May 30, 2017 at 4:55 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 (or an ungarded 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: May Swiss 90. Scott Williams, who just recently played his 100th tournament game, attacked the Bishop, perhaps in an effort to gain the Bishop pair. Mike Sandau, in his first contest versus Scott, retreated the Bishop, not willing to trade it yet.
However, Mike didn't move the Bishop back quite far enough, leaving it unguarded and creating the Pin.
White to move
See the diagram and answer here:
P Is For Pin VI
[Event "May Swiss 90"]
[White "Williams, Scott"]
[Black "Sandau, Mike"]
1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. Nxd4 exd4 5. d3
a5 6. O-O c6 7. a3 Nh6 8. Nd2 Bd6 9. Nf3 b5 10. Ba2 Ng4 11. h3 Ne5 12. Bf4 Qe7
13. Nxd4 Qf6 14. Nf5 Bc7 15. d4 g6 16. dxe5 Bxe5 17. Bxe5 Qxe5 18. Nd6+ 1-0
This Week In Chess
On May 23rd, the Colorado Springs Chess Club continued the May Swiss 90 (5SS, G/90+30).
# Name Rtng Rd 1 Rd 2 Rd 3 Rd 4 Tot Prize
1 Laurence Rob Wutt 1989 W8 W5 W2 W4 4.0
2 Paul D Anderson 2008 W12 W6 L1 W7 3.0
3 Michael Smith II 1545 W13 W7 L4 W9 3.0
4 Alexander Freeman 1908 D9 W12 W3 L1 2.5
5 Mark McGough 1859 W10 L1 W11 D6 2.5
6 Brian Jo Rountree 1761 W11 L2 W8 D5 2.5 $5.00 GOW
7 Peter Barlay 1957 W14 L3 W9 L2 2.0 $5.00 GOW
8 Dean W Brown 1475 L1 W13 L6 W11 2.0
9 William Leo Wolf 1312 D4 W14 L7 L3 1.5
10 Scott Ch Williams 1282 L5 L11 H--- W14 1.5
11 Clinton D Eads 1180 L6 W10 L5 L8 1.0
12 Alemayeh Mekonnen 1478 L2 L4 W14 U--- 1.0
13 Daniel J Rupp 993 L3 L8 H--- U--- 0.5
14 Michael W Sandau 1372 L7 L9 L12 L10 0.0
Projected prizes: 1st $30; 2nd $20; U1600 $13