Annotated chess game

Which is what I'd do here as white.

This looks difficult to stop. I thought 12.Qd8ch Nd7 13.Qxc7ch Kxc7 might help, but the Queen still can't be taken: 14.Rxh2 Kd6 and it looks as though the BK will reach e5.

11...Qf5 would also work here, as Ke5 is quite hard to prevent!

?? This is what I think allows you to win, at once, starting with your next move. As now, you're bound to get an unstoppable passed pawn.

A better defense for white would be 12. Qh5 (Covering e5. The threat of 13.Qd5# is incidental). 12.Qb5 fails against 12...c5!

I agree.

I would've played 13...Qxh1 here.

But this wins...

Funnily enough, playing 13...Qxg2+ for black in this position would give White a free win after 14.Kd3! as it becomes impossible to cover both e4 and d4.

More then that. It's also centralized, and although I haven't thought this way in a long way, I'll go by a mathematical system. And, using a little bit of trigonometry, with your K+Q+B together like this that look to be forming a triangle, you've an overwhelming advantage. And, having said that, I would've taken with 14...Rxh2, but I see why white resigned here.

An interesting exercise that would probably go some way towards developing the chess imagination. Of course, the task is quite a bit different from ordinary chess...

@jkarp He didn’t. My king is in the centre, I win in king of the hill