THE SU 75 CHECKMATE

The Su-75 Checkmate is a next-generation stealth fighter aircraft developed by the Russian company Sukhoi. As of my knowledge cutoff in September 2021, there were no official announcements or information available about the Su-75 Checkmate. It's important to note that as an AI, I don't have real-time information, so I cannot provide details about developments or announcements that may have occurred after September 2021. I recommend checking reliable sources or news outlets for the latest information on the Su-75 Checkmate.