[T0Bi]

Source? Because I'm pretty sure it's not closed and Wikipedia seems to agree with me:

"No complete solution for chess in either of the two senses is known, nor is it expected that chess will be solved in the near future (if ever)".

https://en.wikipedia.org/wiki/Solving_chess

[stabbles]

If chess is solved and white wins, black is always in Zugzwang. We might not know.