Counter 2.1.0 64-bit in CCRL Blitz, 2021-04-17
Ponder off, General book up to 12 moves, up to 6 piece EGTB
Time control: From Jan 2020, equivalent to 2'+1" on an Intel i7-4770K. See the "About" page.
Tested by CCRL team, 2005-2021, http://ccrl.chessdom.com/ccrl/404/

CCRL Blitz main list:
Counter 2.1.0 64-bit has no rank with rating of 2560 Elo points (+18 -18),
based on 1114 games: 358 wins, 444 losses and 312 draws
Score: 46.1%, Average opponent: +26.9, Draws: 28.0%


Pairwise results:
     Opponent                              Elo     Score                  LOS   Perf
 - Shield 2.0 64-bit                       2702  23.0-41.0  (+14-32=18)    0.0   +43
 - WyldChess 1.51 64-bit                   2629  15.0-17.0  (+12-14=6 )    0.0   +45
 - WildCat 8                               2624  12.5-19.5  (+10-17=5 )    0.0   -22
 - Movei 00.8.438 (10 10 10)               2621  17.0-15.0  (+11-9 =12)    0.0   +82
 - GreKo 2016 64-bit                       2619  11.5-19.5  (+6 -14=11)    0.0   -24
 - Philou 3.7.1 64-bit                     2619   9.5-22.5  (+5 -18=9 )    0.0   -82
 - GreKo 2017 64-bit                       2615  13.5-16.5  (+10-13=7 )    0.0   +16
 - Glass 2.0 64-bit                        2614  15.0-17.0  (+9 -11=12)    0.0   +33
 - Slow Chess Blitz WV2.1                  2614  16.0-16.0  (+12-12=8 )    0.0   +52
 - Jellyfish 1.1 64-bit                    2612  15.5-16.5  (+9 -10=13)    0.0   +41
 - Rotor 0.8                               2611  16.0-16.0  (+11-11=10)    0.0   +48
 - Ruffian 2.1.0                           2610  13.5-18.5  (+8 -13=11)    0.0    -2
 - GarboChess 2.20 64-bit                  2607  13.5-18.5  (+10-15=7 )    0.0    -8
 - Amyan 1.72                              2604  11.0-21.0  (+6 -16=10)    0.0   -64
 - Pharaon 3.5.1                           2603  14.0-18.0  (+8 -12=12)    0.0    +2
 - Floyd 0.9 64-bit                        2587  12.0-20.0  (+10-18=4 )    0.5   -70
 - K2 0.87                                 2586  11.5-18.5  (+7 -14=9 )    1.7   -49
 - Hamsters 0.7.1                          2579  15.5-16.5  (+11-12=9 )    2.3    +9
 - Muse 0.953 64-bit                       2578  15.5-16.5  (+12-13=7 )    4.1    +5
 - Maverick 1.5 64-bit                     2572  19.5-12.5  (+14-7 =11)   11.6   +82
 - SOS 5.1                                 2572  15.5-16.5  (+12-13=7 )   10.5     0
 - Aristarch 4.50                          2567  16.5-15.5  (+11-10=11)   21.2   +18
 - Petir 4.39                              2564  12.5-19.5  (+6 -13=13)   32.4   -64
 - nanoSzachy 4.1 64-bit                   2561  13.5-17.5  (+8 -12=11)   45.7   -42
 - Brutus 8.05 64-bit                      2560  13.5-18.5  (+9 -14=9 )   50.6   -56
 - Ghost 3.1 64-bit                        2544  16.0-16.0  (+13-13=6 )   92.3   -16
 - Rebel Century                           2542  18.5-13.5  (+14-9 =9 )   95.4   +34
 - Ufim 8.02                               2540  16.5-15.5  (+13-12=7 )   98.1    -9
 - Fridolin 2.00 64-bit                    2538  16.5-15.5  (+11-10=11)   98.2   -15
 - AnMon 5.75                              2537  18.5-13.5  (+15-10=7 )   99.1   +33
 - Capivara LK 0.09b02g 64-bit             2536  16.0-16.0  (+12-12=8 )   97.9   -24
 - Hermann 2.8 64-bit                      2531  13.5-18.5  (+9 -14=9 )   99.8   -85
 - Betsabe II 1.75                         2523  19.0-13.0  (+16-10=6 )   99.9   +30
 - JikChess 0.02 64-bit                    2522  17.5-14.5  (+14-11=7 )  100.0    -4