Danny Kopec, Hal Terrie Test, Evaluate and Improve Your Chess U S Chess Press (2003)

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

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Test, Evaluate and Improve Your Chess:

A Knowledge-Based Approach

by IM Danny Kopec and Hal Terrie (USCF Press)

Interested in Chess? Visit

www.kopecchess.com

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The first thing any chess teacher must do, when meeting a new student, is to discover how much he already knows. Maybe
you will ask him to demonstrate the basic mates with queen and with rook. After that, you may set up the pieces and play a
few moves with him, to see if he knows to develop his pieces and castle. That will tell you a little, if the student is only a
bit better than beginner. But what if he is a more advanced player? How can one determine, in an hour or so, exactly how
much chess knowledge he has and where his deficiencies lie? One way to answer this question came as early as 1980,
when Danny Kopec and Dr. Ivan Bratko developed a 24 position test for use in evaluating computer chess programs. The
test, called the Bratko-Kopec (or BK) test, remained a standard tool for chess program developers for a number of years.
The positions test for a number of common tactical and positional ideas.

Shortly after it was devised, Danny Kopec
discovered that the BK test, and a subsequent test
called the New Positions test, could be used to test
humans as well as computers. In the years since
then, the tests have been given to hundreds of
human players, revealing a remarkable correlation
between test score and rating. It was natural,
therefore, that we would find a use for these tests
when we began the

Kopec Chess Camp

in 1994.

We used the tests both to help assign campers to
instruction groups of the appropriate level and to
teach important tactical and positional ideas.

IM Danny Kopec

One of the first things we learned at the camp was that the tests were too hard for some of the weaker young players. Even
a player of 1500 rating could be expected to score only about 5 correct on the BK test. So for the second year of the camp,
Hal Terrie devised a new test, specifically designed for those of beginner level up to about 1500 rating. In the years since
then, four additional tests of varying levels have been constructed, with the goal of testing a wide range of middlegame and
endgame concepts.

In 1997, the first six tests and some research results were collected into a book, Test, Evaluate and Improve Your Chess, a
Knowledge-Based Approach
. In 2003, the USCF published a new edition, containing revised and improved test solutions, a
new seventh test and updated research from the years 1997-2002. Here now are some samples from these tests. In this
article, we will show you some positions from the earliest tests and from the two designed specifically for novice and
intermediate players. In a subsequent article, we may look at the other tests, two of which focus on endgame concepts.

The BK and New Positions tests feature tactical ideas of varying difficulty. The student get two minutes to look at each
position and list up to four moves in descending order of preference. Here are some samples:

BK #15: Fischer - Mecking

Palma de Mallorca Interzonal, 1970

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

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White to move

[CV: After reviewing the position, scroll down for the commentary.]

1.Qxg7+ Qxg7 2.Rxf6 After the further: 2...Qxg3 3.hxg3 later followed by g4-
g5-g6, Fischer managed to trade off his extra, doubled g-pawn to remain a pawn
ahead. A relatively simple tactical pattern.

BK #19: Euwe - Keres

World Ch. Tnmt., The Hague, 1948

Black to move

[CV: After reviewing the position, scroll down for the commentary.]

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

This one is more difficult. 1...Rxe4! The fork trick in action. After: 2.Rxe4 d5
3.Qxa6 dxe4 4.Be3 Qg4!
Keres quickly translates his central advantage into a
winning kingside attack. 5.Qc4 Rd3! 6.Bc1 6.Qxe4?? Qe2–+ 6...Nh4! 7.Qxe4+ 7.
g3 Rxg3+–+; 7.Rf2 Rd1+–+; 7.Qc2 f5! With the deadly threat of ...e3 (Kmoch).
7...f5 8.Qb7 c6 9.Qxc6 Rc3 10.Qd5 Rc5! To deflect the queen. The immediate
10...Rc2 would be met by 11.Bd2. 11.Qd2 To prevent ...Rc2 but now: Rxc1! The
point being 12.Rxc1 Nf3+. Black won. (Source: Pawn Power in Chess, Diagram
#154)

Here is one that tests a positional idea:

BK #3: Bogoljubow - Spielmann

Match Game, 1932

White to move

[CV: After reviewing the position, scroll down for the commentary.]

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

1.d5! cxd5 2.e5 R6d7 2...d4? 3.exd6 dxc3 4.dxe7+ wins a piece. 3.Nd4 This is
an example of a very characteristic lever, the "sweeper sealer twist" (Kmoch,
1959). It involves a long term pawn sacrifice where, at the end of the principal
variation (above):

White has: (1) gained full control of the open c-file, (2) sealed off Black's half
open d-file, (3) gained a tremendous central post for his N, (4) weakened Black's
pawns into three groups (three islands) and (5) gained a K-side majority of
pawns. (Source: Pawn Power in Chess, Diagram 144)

Positions like these first three were much too difficult for novice players, so the Novice test looks for knowledge of a
variety of simpler concepts. The test has eight positions each in the opening, middlegame and ending, at a variety of
difficultly levels appropriate for less experienced players. Once again, the student gets two minutes to look at each position
but this time writes down only one move choice.

Novtest #6: Simplify When Ahead

White to move

[CV: After reviewing the position, scroll down for the commentary.]

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

1.Bxd6 When ahead material in the endgame, always head for the simplest
available position by exchanging the defending pieces. (Source: Hal Terrie
composition, 1995) If White tries 1.Kd4 instead, then 1...Nc4 gives him real
trouble.

Novtest #13: Only One Recapture

White to move

[CV: After reviewing the position, scroll down for the commentary.]

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

This position tests for simple tactical alertness. After 1.e4 c5 2.Nf3 d6 3.d4 cxd4
4.Nxd4 Nf6 5.Nc3 Nc6 6. Bc4 Qb6 7.Nxc6 Black should play 7...bxc6 but not
7...Qxc6?? 8.Bb5, losing the queen to a pin.

Novtest #9: Seventh Rank

White to move

[CV: After reviewing the position, scroll down for the commentary.]

1.Rd1 1.Re1? allows Black to prevent White's rook from reaching the seventh
rank by 1...Kf8

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

Analysis: After 1.Re1 Kf8

1...Kf8 2.Rd7± (Source: Hal Terrie composition, 1995).

Position after 2.Rd7

Novtest #22: Rook Behind Passed Pawn

Black to move

[CV: After reviewing the position, scroll down for the commentary.]

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

1...Rb2 = Rooks belong behind passed pawns! (Source: Hal Terrie composition,
1995) If 1...Rb8? 2.Rb1 and White gets to keep his pawn.

The most recent test is the Intermediate test, designed for those with playing strength between 1500 and about 1900. It
looks for knowledge of more advanced concepts than those in the Novice test. Some samples:

Intermediate Test #3: Activate Rook

Black to move

[CV: After reviewing the position, scroll down for the commentary.]

Black must sacrifice a pawn to activate his rook: 1...Rb8 (or ... Rd8) Not 1...
Re8? 2.Kf1. 2.Rxa5 Rb1+ 3.Kg2 Ra1.

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

With the rook behind the passed pawn, Black can draw. This is an example of
the kind of specific endgame knowledge (R+3+a-pawn vs. R+3, rook behind a-
pawn, (with ...h5) draws) which strong players must have.

Intermediate Test #11: Ruy Lopez, Noah's Ark Trap

White to move

[CV: After reviewing the position, scroll down for the commentary.]

This arises after the opening moves 1 e4 e5 2 Nf3 Nc6 3 Bb5 a6 4 Ba4 d6 5 d4

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

b5 6 Bb3 exd4. Now 7.Bd5 is the right move. White cannot play 7.Nxd4? Nxd4
8.Qxd4 c5 9.Qd5 Be6 10.Qc6+ Bd7 11.Qd5 c4 is the Noah's Ark trap. White
could also play in gambit style, with 7.c3 dxc3 8.Nxc3 ( 8.Qd5 Qd7 is not
convincing.) This is an example of a position which can be solved either by
calculation or by simple knowledge – having seen it in a book. Either way is
equally valid for the purposes of the test.

Intermediate Test #22: Accurate Simplification

White to win

[CV: After reviewing the position, scroll down for the commentary.]

This is a technique position, where the best way to avoid counterplay is not the
most obvious. 1.Rxc6 is the most precise, simplifying to an immediate win: 1...
bxc6 2.Rb8+ Kd7 3.Rb7+ Ke8 4.Rxf7 Kxf7 5.Bxc5

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

with the devastating threat of d7. This was the conclusion of Kopec - Bellin, 2nd
Edinburgh Congress, 1981. Instead, after 1.Rxb7 Rxb7 ( 1...Bxd6? 2.Rxf7 Kxf7
3.Kd5; 1...Rxd6 also holds on.) 2.Rxb7 Bxd6 3.Kd5 Rc7 4.Rb6 Be7 White is
winning but Black can still make some moves. In other words, White should
win, but he may have to play for a number of more moves and hours. Hence,
when a simplifying combination is available whereby you can convert to an
"easier" endgame, it is important to find it.

In any book like this one, there are always improvements discovered too late for the press deadline. One such example is
this one:

BK #8: Alekhine - Yates, Hastings 1926

White to move

Black suffers from a classic weakness of the dark squares, hence: 1.f5 eventually forces access to the f4 square for White's
knight. The game now continued with 1...g5 2.h4 f6 3.hxg5 fxg5 4.Ng1 Bd7 4...h4 5.g4! Ba4 6.Ke2! c3 7.Nh3 c2 8.Kd2
Notice that Black's passed c-pawn is ineffective because of his inability to control the dark squares. 8...Bb5 9.Nxg5 Be2 10.
f6+ Ke8 11.e6 Bxg4 12.f7+ Ke7 13.Nh7 and wins. 5.f6+ Ke8 6.Nf3 g4 7.Nh4 Be6 8.Ng6 Bf7 9.Nf4

9...Kd7 10.Ke2 a5 11.Ke3 Black has no useful moves and will soon have to
move king or bishop.

Reuben Fine spent a whole page in

Basic Chess Endings

(#256, page 247)

discussing that after 1...gxf5 2.Nf4 Bc6 3.Nxh5 Kf8:

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Chessville - Test, Evaluate and Improve Your Chess, a Knowledge-Based Approach - by by IM Danny Kopec and Hal Terrie

...he couldn't find a win for White. Shortly before the book went to press, Danny
Kopec thought he had found the win and so we published this: I (DK) believe
that we have found a straightforward winning plan for White as follows: 1) Play
Nf4 and then e6 combined with h4. 2) Get the N to c3 via f4, e2. 3) Get the
White king to f4. 4) After advancing the a-pawn as far as possible, use the h-
pawn as a decoy. 5) Win the a-pawn. White's a-pawn wins the game.

Alas, too late we discovered that there is a defense to this plan. We remain convinced that there is a win and invite readers
to join the search.

E-mail your ideas to us

and we will summarize the continuing discussion on our web site at

www.

kopecchess.com

. (Source: Pawn Power in Chess, Diagram 65).

NOW AVAILABLE!

Winning the Won Game

by IM Danny Kopec and GM Lubomir Ftacnik (with foreward by Paul

M. Albert, Jr.)

Paul Albert Brilliancy Prize-winning games from the last 20 years of

U.S. Men's and Women's Championships

Read excerpts from the introduction

Order an autographed copy today!

Test, Evaluate and Improve Your Chess:

A Knowledge-Based Approach

The second edition of this invaluable book by IM Danny Kopec and Hal Terrie

(USCF Press) AVAILABLE NOW!

Order your autographed copy today!

World Chess Title Contenders and their Styles

has been released by

Dover Publications. Written with Scottish IM Craig Pritchett, this book was

originally published in 1980 as Best Games of the Young Grandmasters.

Order an autographed copy

Mastering the Sicilian Defense

has been released by Chrysalis

Publishers. This is Danny Kopec's comprehensive survey of the most popular

defense in the e4 repertoire.

The Master Chess Series Videos

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