Revert "Couple of comments"

This reverts commit 82b88e169b51dda34add2b7117ca86e3b604049a.
Revert "Be slightly more XBoard friendly"

This reverts commit cc505db9c863472413fd7b0601d9835d3eef464a.
Revert "Primitive LMR"

This reverts commit c402e67908270790c6f86b1626af5970eabcf9ea.
Revert "Use the TT more"

This reverts commit b89afd6e541ecd598edfd9f4fed6dfdee84da9e4.