The 1945 USA-USSR Radio Chess Match
From September 1 to 4, 1945, ten American players and ten Soviet players faced off across two games each, transmitted entirely by radio between New York and Moscow, since post-war travel between the two countries was not practical. The result, a 15.5-4.5 rout for the USSR, stunned a US chess public that had watched its team win four consecutive prewar Chess Olympiads. It is now read as the opening move of roughly fifty years of Soviet chess dominance.
A format built for the moment
With transatlantic travel still disrupted after the Second World War, organisers set up a ten-board match where each pair of players contested two games, transmitted move by move over radio, one side making a move and radioing it across the ocean for the other side to respond. It was slow, logistically strange by modern standards, and still produced real, serious chess, not an exhibition.
The board 1 demolition
On board one, reigning Soviet star Mikhail Botvinnik faced US Champion Arnold Denker and won both games. Playing Black in the first game (a Semi-Slav Defence, the same family of openings underpinning several other historic clashes on this list), Botvinnik demonstrated exactly the calm, technically overwhelming style that would carry him to the World Championship three years later.
Why the American loss went so deep
The USSR did not simply win at the top, it won up and down the entire ten-board lineup, a result that pointed to depth, not one or two exceptional individuals. That distinction mattered enormously for what came next: a single great player can be an outlier, but a team sweep from board one to board ten is evidence of a system.
The system that produced it
What the American chess public was seeing, without yet having the language for it, was the early output of state-sponsored Soviet chess development, structured training, chess in schools, a pipeline that had been building since the late 1920s and would come to define Soviet chess for the rest of the century.
A single result, an entire era
The Soviet Union would go on to hold the World Championship almost uninterrupted from 1948 until Fischer's win in 1972, and again from 1975 until the Soviet collapse. The 1945 radio match is where the pattern first became impossible to ignore, four days over the airwaves that previewed fifty years of results.