This test is is really a Replay a game Test but instead of trying to prove the existence of a clone, the goal is to find any differences in their game play and try to identify at what point in the games these move deviations occur.
In these tests, machines that reply on average more then 90% of the time with the same move can be considered as having the exact same software program.
The idea for these tests was formed while reading an article in which it was stated that Radio Shack Champion 2250 XL was just another one of many Saitek Kasparov GK2100 clones.
To test the validity of this article the following machines have been added to this test. All the Saitek machines below are listed as clones.
- Saitek Kasparov Cougar
- Saitek Kasparov Cosmos
- Saitek Kasparov GK 2100
- Saitek Kasparov Travel Champion 2100
- Saitek Kasparov Centurion
- Saitek Kasparov Travel Expert
- Radio Shack Champion RS 2250 XL
- Mephisto Roma II
- Novag Sapphire
Each machine was forced into playing two 40 moves in 2 hours games, using exactly the same opening each time, the Ruy Lopez Exchange Variation both as Black and as White against Fritz 8 on a Home PC running at 1.8 GHz. Next three games were picked at random that were played by a Saitek computer. The test results are shown below: