| The
Bratko-Kopec Test was designed by Dr. Ivan Bratko and Dr. Danny
Kopec in 1982 to evaluate human or machine chess ability based
on the presence or absence of certain knowledge (i.e. Master,
Expert, Novice, etc). This test has been a standard for nearly
20 years in computer chess. Experience has shown it very
reliable in corresponding to the chess rating of humans and
machines. There
are 24 positions. You are given 2 minutes to select
up to 4 preferred moves (in priority order) for each position.
Each position (except two) is deemed to have one best move.
Scoring depends upon this priority:
| Selected
Priority |
Points
Awarded |
| #1 |
1.00 |
| #2 |
0.50 |
| #3 |
0.33 |
| #4 |
0.25 |
The
test is 48 minutes long. Enter your preferred moves
in the appropriate text fields above the image of the position.
Also, on top of every position you will be notified which
side is to move (BLACK or WHITE); plan your moves accordingly.
If you finish working on a certain position before the 2-minute
period is over, you will have to wait until the two minutes
expires before the next position is displayed. To the
right of the chessboard is a time-remaining field, which will
warn you at one minute and at 30 seconds left.
At the end of the test, you will be given your estimated rating
and level of chess (Novice, Club Player, Expert, Master or
Senior Master (International Master) along with the total
score. Each position is considered either tactical
(T) or lever/positional (L). A level of
difficulty from 1 to 4 has been assigned to each position
as well. At the end, you'll be given T-score
and L-score. You will also be able to see how
many positions of a certain level of difficulty you correctly
analyzed (from the total number of positions of that level
of difficulty).
In addition to the scores and rating, you will be able to
review your performance on each position. Use the 'Previous'
and 'Next' buttons to move through the positions.
For each, you will see which moves you selected and the correct
move for that position.
There
are two ways to print the summary report. The most complicated
is to use the PrintScreen button and the Paint (or
similar) program to display the report, printing from that
application. The easier method is to download and install
PrintKey-Pro,
a very small, free application. After installation, pressing
the PrintScreen button on the keyboard automatically
invokes PrintKey-Pro, allowing you to print the screen.
Here
are some positions just for practice (time yourself). In all
three, it's BLACK's turn to move:
The
best moves for the above positions were:
- c5
-
Ne4+ or Ne4
- Rxf2
      In Ne4+, '+' stands for check.
      In Rxf2, 'x' stands for captures.
 
During the test, this is exactly how you are expected to enter
the moves:
-
If you want to move a pawn, just put the cell you want to
move it into on the chessboard (e.g. c5).
-
If you want to move any other figure, first put the first
letter of the name of the figure and then the cell you want
to move it into (e.g. Rd4 -- which means Rook to d4). The
letter signifying the figure can be in either lower or upper
case.
-
For capture you must use 'x' (like in practice Position
#3).
-
For check, '+' is optional.
-
Please be careful to put your preferred moves in the answer
slots in the order of your preferences.
Are
you ready? Good luck! Here's
the test
All
six Bratko-Kopec Tests are available to members! Join now!
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