Perhaps it would be better: Why can’t chess be solved yet?
And the answer is because today it is still beyond our abilities to develop the appropriate algorithm.
I frequently read figures, which I am not quite sure how they got, where they indicate that the number of possible moves is greater than the atoms in the universe and that due to this complexity there is no current computer that can calculate all possible moves and develop the appropriate algorithm. They even talk about quantum computers and the like.
Well, I have news for you. Chess engines have been used since time ago to calculate all possible moves in some simple endings and generate endgame tablebases containing all possible positions. Yes, all. And you know what? Chess engines continue to use endgame tablebases because no one has been able to develop an algorithm to replace them.
That simple.
Hi J !
No matter how good the algorithm ...
there's always a particular thing at the base of the whole project that limits it severely.
The number of operations per second that whatever computer can perform.
It can only work so fast.
Not 'nodes per second' but 'ops per second'.
The most basic binary ops.
Even with a million trillion ops per second (a quintillion) solving chess still too daunting.
You'd think that 10^18 would make a big dent in the 10^44 number ...
but those are just 'ops'.
You need many ops just to define a position on the board - let alone analyze it - let alone 'solve' it.
And there's no 'constant' on any of those either ...
the more pieces - the harder. Peaking at around 27 pieces on the board.
(not 32 - remarkable ey? but the reason has been discussed here)
Point: That impressive 10 ^ 18 number of 'ops per second' itself gets cut way down and in turn therefore can't make nearly as big a dent in the 10^44.
Which is just far too formidable a number for today's computers.
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Analogy: the closest star to earth's star the sun - is Alpha Centauri which is over 4 light years away.
That means if your spaceship could do 600 million miles an hour the journey would take over 4 years (hey but what about slowing down towards the end?)
But spaceships can't even do a 1000th of that speed.
You're looking at way over 4000 years to make that trip.
Would there ever be the money allocated for that - even if that amount of money existed to pay for it?
Point: Like with spaceships - the chess project is fundamentally limited by the ops speed of its processors.
Hardware. No matter how good the software.

and guess what ?...chess can be completely described. trust me. its just out there waiting to be discovered lol !
What's interesting is there are all sorts of "easy" facts out there that for practical reasons we'll never know them... but they exist... we just can't have them
For example, what's the exact population of humans on Earth at any given time?
A very good point.