Defense24: the main problem of the Checkmate fighter is that it is not in reality 
The main problem of the promising Russian light tactical aircraft (LTS), known as Checkmate (“Checkmate”) and the Su-75, is that this fighter does not exist in real life, but only virtually and in the form of one demo model, says the Polish edition of Defense24.
The publication claims that the flight tests of the LTS could be delayed due to the “COVID-19 pandemic raging in Russia.” “The history of the Su-57, with which the new car is associated with more than just the same letters and numbers in the name, does not inspire optimism,” the publication assures.
Defense24 notes that Checkmate is aimed at foreign buyers who are able to invest in the development of this aircraft and, possibly, its production in their country. In particular, for this purpose, some of the equipment that the Su-75 will receive will be modular.
In November, the American magazine The National Interest outlined the criterion for the success of LTS. According to the publication, the success of Checkmate on foreign markets depends on its use by the Russian Armed Forces.
In the same month, the head of the United Aircraft Building Corporation (UAC), Yuri Slyusar, said that the production of LTS had begun at the plant in Komsomolsk-on-Amur .
In November, the American edition of The Drive wrote that the LTS actually looks like a medium fighter. The publication noted that “Checkmate has a length of about 17 meters with a wingspan of 12 meters, compared with the same figures of 20 and 14 meters for the Su-57.”
In July, Rostec presented the LTS at the International Aviation and Space Salon MAKS-21. According to the general director of “Rostec” Sergei Chemezov, a single-engine tactical fighter will cost from 25 to 30 million dollars. As the head of the United Aircraft Building Corporation Yuri Slyusar noted, the aircraft shown on the cabin is a model that will fly in 2023.