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Version vom 29. Januar 2023, 17:43 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 for the correct move observed will be noted and used in this Test.
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 list below (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

Basis points

Position 1	Position 2	Position 3	Position 4	Position 5	Position 6	Position 7	Position 8	Position 9	Position 10
25 Points	25 Points	25 Points	30 Points	30 Points	35 Points	35 Points	35 Points	40 Points	40 Points

Position 11	Position 12	Position 13	Position 14	Position 15	Position 16	Position 17	Position 18	Position 19	Position 20
25 Points	25 Points	25 Points	30 Points	30 Points	35 Points	35 Points	40 Points	40 Points	40 Points

Position 21	Position 22	Position 23	Position 24	Position 25	Position 26	Position 27	Position 28	Position 29	Position 30
25 Points	25 Points	30 Points	30 Points	35 Points	35 Points	35 Points	40 Points	40 Points	40 Points

Evaluation table

Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo
1960	2360	1945	2320	1930	2280	1915	2240	1900	2200	1892	2180	1883	2160

Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo
1874	2140	1865	2120	1856	2100	1848	2080	1839	2060	1830	2040	1809	2020

Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo
1788	2000	1766	1980	1745	1960	1724	1940	1703	1920	1681	1900	1660	1880

Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo
1646	1860	1633	1840	1619	1820	1605	1800	1591	1780	1578	1760	1564	1740

Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo
1550	1720	1515	1700	1480	1680	1445	1660	1410	1640	1375	1620	1340	1600

Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo	Points	Elo
1305	1580	1270	1560	1231	1540	1193	1520	1154	1500	1038	1440	960	1400

Computer	Points	Elo (Colditz)
Mephisto B&P	1826,5	2040
Novag Super Constellation	1732,5	1950
Novag Constellation 3.6	1732,5	1950
Novag Constellation	1666	1880
Novag Beluga	1658	1878
SciSys Turbostar 432	1621	1820
Mephisto Modena	1570	1749
Mephisto Super Mondial	1570	1749
Novag Agate	1473,5	1680
Mephisto Rebell 5.0	1424,4	1650
SciSys Superstar 28K	1400,5	1630
SciSys Chess Champion Mark V	1375	1620
Mephisto Europa	1254	1552
Mephisto II	1113	1480
Chafitz Boris	250,5	Elo
Fidelity Excellence 6080/6080 B	1625	1830
Fidelity Excellence EP12	1671	1890
Fidelity Excellence Voice	1625	1830
Fidelity Excel Display	1625	1830
Fidelity Septennial	1471,5	1675
Fidelity Elegance 3,6	1674	1895
Fidelity Mach II "C" L.A.-Version	1733	1950
Fidelity Mach III	1783,5	1995
Fidelity Par Excellence 10 MHz	1787	2000
Fidelity Elite A/S Challenger	1621	1820
Fidelity Elite A/S Budapest 3,6	1575,5	1755
Fidelity Elite A/S Budapest 8 MHz	1708	1925
Fidelity Elite A/S Glasgow 8 MHz	1713	1930
Fidelity Elite A/S Glasgow	1683	1900
Fidelity Prestige	1584	1770
Fidelity Prestige Glasgow	1677,5	1895
Fidelity Designer 2000	1661,5	1880
Fidelity Designer 2000 8 MHz	folgt	folgt
Fidelity Excel 68000	1696,5	1915
Fidelity Super 9	1454,5	1665
Fidelity Phantom	1699	1920
Fidelity Elite Avant Garde 2100	1699	1920
Fidelity Designer 2100	1659	1880
Fidelity Sensory Champion	1451	1660
Fidelity Sensory 12 3 MHz	1654,5	1870
Fidelity Sensory 12 "B" 4 MHz	1680	1900
Fidelity Sensory 9	1484,5	1680
Fidelity Sensory 9 "B" 2 MHz	1539	1715
Fidelity Playmatic S	1603,5	1800
Fidelity Playmatic S helle Vorserie	1630,5	1835
Gerät	Points	Elo

Individual results

Computer	Position	Time
Fidelity Mach III	11 (Dxf4)	0:10
Fidelity Par Excellence 16 MHz	11 (Dxf4)	0:35
Computer	Move	Time
Computer	Move	Time
Computer	Move	Time
Computer	Move	Time

Alternative test evaluation

Download EloStatTS, Version 1.0 by Dr. Frank Schubert

Tactical Strength (ÃƒÂ¡ 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 Challenger/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 28 K/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 Chafitz Steinitz Edition/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 for: 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 ÃƒÂ¡ la Colditz. These are however irrelevant for an EloStatTS evaluation.

NOT TESTED dedicated Chess Computers below 1900 Elo