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[[Bild:Colditz.jpg|left]]
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A collection of 30 tests to identify tactical play strength.  Originally written by Karl Colditz in the book „Lern-, Practice and Chess Combination Tests“ (German) published by Falken Verlag.  These tests are also well suited for testing the tactical strength of weaker chess computers.  Each test is timed until the correct move is shown in the display of the computer using the Analysis level.  If the correct move is displayed immediately, then the correct move needs to be observed for a little while longer (min. 1 minute extra) in order to ensure that the move was not picked by chance.  The highest amount of time allowed for each correct move solution is 30 minutes.
A collection of 30 tests to identify tactical play strength.  Originally written by Karl Colditz in the book „Lern-, Practice and Chess Combination Tests“ (German) published by Falken Verlag.  These tests are also well suited for testing the tactical strength of weaker chess computers.  Each test is timed until the correct move is shown in the display of the computer using the chess computer's Analysis Level.  If the correct move is displayed immediately, then the correct move needs to be observed for a little while longer (minimum 1 minute extra) in order to ensure that the move was not picked by chance.  The highest amount of time allowed for each correct move solution is 30 minutes.
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If the chess computer does not have a display, a more intensive test method will have to be used.  The chess computer will try to play the correct move starting with Tournament Level.  If the move is found/not found, then the position is replayed at a lower level/or a higher level.  The lowest time observed will be noted.
If the chess computer does not have a display, a more intensive test method will have to be used.  The chess computer will try to play the correct move starting with Tournament Level.  If the move is found/not found, then the position is replayed at a lower level/or a higher level.  The lowest time observed will be noted.

Version vom 30. Dezember 2007, 04:54 Uhr

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Colditz Test

A collection of 30 tests to identify tactical play strength. Originally written by Karl Colditz in the book „Lern-, Practice and Chess Combination Tests“ (German) published by Falken Verlag. These tests are also well suited for testing the tactical strength of weaker chess computers. Each test is timed until the correct move is shown in the display of the computer using the chess computer's Analysis Level. If the correct move is displayed immediately, then the correct move needs to be observed for a little while longer (minimum 1 minute extra) in order to ensure that the move was not picked by chance. The highest amount of time allowed for each correct move solution is 30 minutes.
If the chess computer does not have a display, a more intensive test method will have to be used. The chess computer will try to play the correct move starting with Tournament Level. If the move is found/not found, then the position is replayed at a lower level/or a higher level. The lowest time observed will be noted.
The times for all the tests are evaluated by the software program EloStatTS 1.0. 1800 ELO points are used as the „Start value“. For every move not found there is a deduction of 10 points as shown in the following list (Column: LOW). In the above named book by Karl Colditz different score values are provided for each test dependant on level of difficulty, sorted and summed accordingly.

The 30 Test Positions of the Colditz Test


Datei:Colditz 01.png Datei:Colditz 02.png Datei:Colditz 03.png Datei:Colditz 04.png Datei:Colditz 05.png Datei:Colditz 06.png Datei:Colditz 07.png Datei:Colditz 08.png Datei:Colditz 09.png Datei:Colditz 10.png Datei:Colditz 11.png Datei:Colditz 12.png Datei:Colditz 13.png Datei:Colditz 14.png Datei:Colditz 15.png Datei:Colditz 16.png Datei:Colditz 17.png Datei:Colditz 18.png Datei:Colditz 19.png Datei:Colditz 20.png Datei:Colditz 21.png Datei:Colditz 22.png Datei:Colditz 23.png Datei:Colditz 24.png Datei:Colditz 25.png Datei:Colditz 26.png Datei:Colditz 27.png Datei:Colditz 28.png Datei:Colditz 29.png Datei:Colditz 30.png

Tactical Strength (á la Colditz) of various Chess Computers, ELOStatTS Evaluation, Start Value 1800 Elo

   Program                                      Elo   LOW +/-  Matches  Score   Av.Op.   S.Pos.

 1 Tiger Grenadier/H8-20MHz                  : 1983   +-0  10    990    74.9 %   1793    30/ 30
 2 Minimax Java/PIII-1400MHz                 : 1980   -10  11    980    75.6 %   1794    29/ 30
 3 Mephisto Montana/H8-10MHz                 : 1953   +-0  10    990    71.4 %   1794    30/ 30 
 4 Conchess Glasgow/6502-6.4MHz              : 1884   -10  10    963    63.6 %   1797    29/ 30
 5 Conchess Amsterdam/6502-6.4MHz            : 1883   +-0  10    990    62.1 %   1797    30/ 30
 6 CXG Super Crown/6301-16MHz                : 1879   +-0  10    990    61.7 %   1797    30/ 30
 7 Novag Forte B/6502-4MHz                   : 1864   -10  10    963    60.8 %   1798    29/ 30
 8 Mephisto MM V/6502-5Mhz                   : 1863   -30  12    931    63.3 %   1799    27/ 30
 9 Conchess T/6502-4MHz                      : 1854   -10  10    963    59.4 %   1798    29/ 30
10 Mephisto MM II/6502-3.7MHz                : 1846   -10  10    963    58.3 %   1798    29/ 30 
11 Mephisto B&P/6502-3.7MHz                  : 1843   -10  10    963    57.8 %   1798    29/ 30
12 Novag Expert/6502-4MHz                    : 1824   -20  10    941    56.3 %   1800    28/ 30   
13 CXG Sphinx Dominator/6502-4Mhz            : 1823   -40  12    926    58.9 %   1800    26/ 30
14 Novag Super Constellation/6502-4MHz       : 1810   -20  10    941    54.2 %   1800    28/ 30
15 Novag Constellation 3.6/6502-3.6MHz       : 1810   -20  10    941    54.3 %   1800    28/ 30
16 CXG Super Enterprise/6301-8MHz            : 1809   +-0  11    990    51.5 %   1799    30/ 30
17 Mephisto Amsterdam/68000-12MHz            : 1798   -20  12    941    52.6 %   1800    28/ 30
18 Mephisto Schachschule II/H8-8MHz          : 1798   -40  12    921    55.1 %   1802    26/ 30
19 Mephisto Polgar Sel.3/6502-5MHz           : 1795   -60  12    913    57.6 %   1802    24/ 30
20 Fidelity Elite Glasgow/6502-3.2MHz        : 1778   -20  11    941    49.5 %   1801    28/ 30
21 Novag Constellation/6502-2MHz             : 1758   -20  10    941    46.6 %   1802    28/ 30
22 Fidelity Elite A/S/6502-3.2MHz            : 1751   -20  11    941    45.5 %   1802    28/ 30
23 Fidelity Playmatic S/6502-3MHz            : 1750   -20  11    941    45.4 %   1802    28/ 30 
24 Krypton Challenge/H8-10MHz                : 1720   -50  12    914    45.0 %   1805    25/ 30
25 Scisys Turbostar 432/6502-4MHz            : 1711   -30  11    929    41.0 %   1804    27/ 30
26 CXG Sphinx 40/68000-8MHz                  : 1701   -60  12    906    43.6 %   1806    24/ 30
27 Fidelity Sensory 9/6502-1.6MHz            : 1655   -40  11    926    34.7 %   1805    26/ 30
28 Scisys Superstar/6502-2MHz                : 1618   -60  12    909    32.1 %   1808    24/ 30 
29 Mephisto Supermini/M50747-8MHz            : 1615   -90  14    901    35.5 %   1809    21/ 30
30 Mephisto S/68000-12MHz                    : 1583   -70  13    916    29.0 %   1809    23/ 30
31 MGS III Steinitz/6202-2MHz                : 1582   -60  12    914    27.7 %   1809    24/ 30
32 Mephisto II/1802-6.1MHz                   : 1485   -90  13    899    20.3 %   1812    21/ 30
33 Mephisto III/1806-8MHz                    : 1478   -80  13    899    18.7 %   1813    22/ 30 
34 Millennium Schachpartner 2000/M-111       : 1458   -150 16    893    23.6 %   1812    15/ 30

LOW = in Column Elo built-in points reduction of 10 Elo per NOT SOLVED position


Instructions on: PGN File Times shown after the slash (/) were taken from CSS. Example: 'Mephisto II/1802-6.1MHz' 1200s / 25. Unfortunately these were not always complete. E.G. in CSS 1/84 the position # 101 showed only >10 Minutes for Mephisto II and III. In these situations an average/middle value was chosen. In this case 1200 seconds for both, since the solution showed a value between 600 and 1800 seconds. Hopefully the true values were not too badly corrupted because of this. It would be best to re-test any questionable results. Values after the slash (/) (as per above example # 25) show the original points á la Colditz. These are however irrelevant for an EloStatTS evaluation.

NOT TESTED dedicated Chess Computers below 1900 Elo