However, informed sources told that the ‘75’ seen on the fuselage is the aircraft-in-development designation for prototypes as seen before in Russian aircraft. Speculation is rife in the Western media that the unconventionally named ‘Checkmate’ is actually the Su-75. The New Russian Light Strike Fighter (LTS- Russian acronym) ‘Checkmate’ that broke cover at MAKS 2021 many not get the Su-75 designation going by the ‘75’ number displayed on the model or prototype displayed at the unveiling.
