And now the chessbase GUI that I use for logging the match and creating the diagrams has shot itself down. Some graphics driver thing, the error message says, I need to reinstall the whole thing tomorrow again. Thats the damn thing with chessbase software and why I stopped buying their later interfaces: they always were a bit buggy and rarely did they ever get patched out in full. Its not the gfx driver, that much is certain, its the CB GUI giving a bogus error. Not the first time something like this happens, has happened occasionally since ever over the past 20 years. Anyway:
This damn wide open empty void the board has turned into is not easy to calculate many moves in advance, and I cannot do it for sure. But one needs to decide on the approach one takes from here on, there is some choice in different ways: focussing on this or the other wing, focussing on pushing a pawn or first simplifying things even further by enforcing material exchange, let the bishop run on empty diagonals or blocking the diagonals, and so forth. This match can drag on for some more time.
I opted for this :
Let' negotiate.
And so:
your move 21. O-O / my move 21. ... / Ra8-c8
