Hello.

Is the miner obliged to broadcast a new block immediately?

Or can he hold on to the result and start mining the next block on his own?

Say, he will broadcast it in 10 seconds? And in those 10 seconds he will gain a new number of nons?

хотя время может и другое быть) например 2 минуты)

и майнеров можно подключить больше))))