https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch10.asciidoc#retargeting-to-adjust-difficulty https://github.com/bitcoinbook/bitcoinbook/blob/develop/c

https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch10.asciidoc#retargeting-to-adjust-difficulty https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch10... Good read about it.