testing Counter 2.9 x64

vs Arminius 2017-01-01 x64 1CPU  [2500] 48.0-52.0 perf=2486
vs Cipollino 3.25 x64 1CPU       [2545] 46.5-53.5 perf=2521
vs Fruit 2.2.1                   [2562] 38.0-62.0 perf=2477
vs Gaviota 0.86 x64 1CPU         [2621] 36.0-64.0 perf=2521
vs Gogobello 1.4 x64 1CPU        [2554] 42.5-57.5 perf=2501
vs Ktulu 4.2                     [2377] 71.0-29.0 perf=2533
vs N2 v0.4 x64                   [2412] 64.5-35.5 perf=2516
vs Naraku 1.4                    [2641] 34.5-65.5 perf=2530
vs Pawny 1.2 x64                 [2598] 31.5-68.5 perf=2463
vs Rotor 0.8                     [2448] 59.5-40.5 perf=2515
vs RubiChess 1.0 x64             [ new] 57.5-42.5 perf= +53
vs Sloppy 0.23 x64               [2453] 67.5-32.5 perf=2580
vs Spike 1.2 Turin 1CPU          [2568] 40.5-59.5 perf=2501
vs Tucano 5.00 x64               [2530] 47.0-53.0 perf=2509
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Counter 2.9 x64 1CPU          ELO 2511 out of 1300 games + 23
Counter 2.7 x64 1CPU          ELO 2488 out of 1152 games
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perf=32653 / 13 = 2511 +- xx = ca. 2511