The Quicktest is a test for computerchess programs. It consists of 24 positions, and focusses on sacrifice combinations (some other types of positions are included too). A good chess program, running at ~1 GHz, will most probably solve at least 50% within one minute of calculation time, each. On the other hand, I think currently (in 2005) still no PC program is able to find all solutions, which means the test will be useful for a longer period of time.

The positions are - roughly - sorted by difficulty, starting with the most difficult ones. The test is performed by letting the program(s) calculate in analysis mode (or on infinite level), with one primary variation, in each test position. Maximum solving time is 1 minute. Solving time is the time, after which the correct first move is displayed, and kept until 1:00. To use the Process Test Set function in Fritz, the correct settings for the Quicktest are Maximum time: 60 and Extra Ply: 5 (=max.).

Attention: Users of automatic testsuite processing functions should note that #9 and #22 are avoid move tests. The moves given are mistakes the programs must not "find", but avoid within the solving time. In #20, the solution is 7...Qe8 in the variation, not the wrong move 7...Kxg5?? which was played in the game. Please take a look at every position and solution move of the program(s). With the short maximum time of 1 minute, manual testing doesn't need much time.

Testing Tips:

This will ensure "clean" testing conditions, to get reproduceable results - most often, but not always though. The PGN and CBF databases you can download here, start with the test positions each, and do not contain the history of the previous game moves (but solution variants are included).

The number of solutions, and the solving times, are the main test results. Like most computerchess tests, the Quicktest uses it's own method to calculate a rating number from these figures. It has two components:

Solution Rating and Time Rating: Basically, each solution earns 10 rating points. Additionally, up to 15 rating points are awarded depending on the calculation times which were required to solve, for each position. The graphic shows the clock-face concept of that rating. In the table below, the two components have been combined already for ease of use:

Seconds  Points
  0....1   25
       2   23
  3....5   20
  6...10   18
 11...15   16
 16...30   14
 31...45   12
 46...60   11
      >60    0
Just sum up the resulting rating points from all positions.

There is a total of max. 600 points possible, theoretically (24*15 + 24*10). In practise, the two components have roughly the same weight (of course this differs, depending on the program). Take a look at the example results for comparison (if you have tested the same programs), to spot possible problems. The downloadable Excel file includes results from many more recent engines, tested at 1,200 MHz.


Testpositions: PGN CBF EPD

test yourself: EPD (Selftest)
This version doesn't contain the solutions.

view positions online: Replay Zone

for MS-Excel users: XLS Spreadsheet, incl. results and prepared (empty) tables

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