it beats me why someone should take a paragraph of text consisting of two sentences. Snip away the second sentence. And then disagree with the first sentence when the second sentence had already done that itself. Why do you snip posts like that?Ovyron wrote: ↑Sun May 26, 2019 11:41 pmWhat is a "real draw"? If the engine thinks there's a certain line that is forced draw, and all deviations from either side lose them the game, but it's wrong, no such thing exists. All draws come from "evaluation equality" except those that are inside a Tablebase, which are irrelevant as they're already solved.chrisw wrote: ↑Fri May 17, 2019 8:05 pmThat’s easily dealt with. Use bit zero to distinguish between score by real draw and evaluation equality.
Your assertion “all draws come from evaluation equality” is of course nonsense. Evaluation equality can come about just because the evaluation terms happen to add to 0.0, not necessarily a draw at all.
Actual, real draws, are as a result of perpetual, stalemate, insufficient material, agreement and so on, It is in all Chess for Beginners, Chapter one.
But I've seen Stockfish give 0.00 score to a position up to depth 59, only to realize white is winning at depth 60, there's no way to know if a position is drawn unless you examine all possible possibilities.