If checkmates actually said ‘checkmate’ on them you’d be able to find them once the Google bot has indexed the whole site. Ideally every page needs to include

If checkmates actually said ‘checkmate’ on them you’d be able to find them once the Google bot has indexed the whole site. Ideally every page needs to include a string summarizing every preceding board state leading up to it, so you can search for a current board state plus ‘checkmate white’ to find every possible way to win from a given board state. Then all that remains to turn Google into the ultimate chess oracle is to persuade your opponent to make all the moves you found.