Using BT2450 and BT2630 Test Suites can provide an estimated rating.

• They should contain 30 positions each.
• Enter each position into your computer, and let it think for 15 minutes (900 seconds).
• If a position is solved, write down its solution time in seconds.
• It does not count as a solution if the program finds, the move and then changes its mind.
• If after finding a move, then changing its mind, then finding it again, you should use the last time found.
• Any solution that is not found, score as 900 seconds.
• Add up all the times.
• Divide by 30.
• Subtract the result from either 2630 or 2450.
• The final figure is the ELO rating.

If you find all positions in the BT2630 in 0“ seconds, you have 2630 ELO.

• Same with BT2450-test-suite.

The BT2450 was too easy for the strong tactic programs, so B and T exchanged some positions and the result is the BT2630 test-suite.

BT2450

BT2630

Bratko-Kopec-Test

Nolot

Win at Chess

ELO can be calculated using Ordo