There are 170 octillion ways to play the first ten moves of chess….

170 octillion = 170 000 000 000 000 000 000 000 000

Chess has more strategic depth than the human mind can ever hope to map.

Every chess match begins with a deceptively simple choice: White has just 20 possible opening moves. However, this simplicity vanishes almost instantly. After each player makes their first turn, the board can already exist in 400 distinct positions. By the time both sides have moved just twice, the complexity balloons to 197,742 potential scenarios, showcasing the relentless geometric growth that defines the "royal game" and challenges even the world's most powerful supercomputers.

The true scale of this complexity becomes incomprehensible as the game reaches its tenth turn. At this stage, the number of potential positions reaches a staggering 170 octillion—a figure so vast it highlights why chess remains an inexhaustible field of study for mathematicians and grandmasters alike. This exponential expansion ensures that within just 64 squares lies a universe of strategic possibility that humanity has yet to fully map, proving that every game played is likely unique in the history of the world.

source: Allis, L. V. (1994). Searching for Solutions in Games and Artificial Intelligence. University of Limburg.