This seemingly challenging (but not really difficult) Crossword will occupy your students for 1 -2 hours. Nearly all of these answers to these 35 clues will appear on the first page of results when you simply read the clue to Siri (or Google). When students are using the internet, the Word Bank is optional. With the Word Bank but no web access, they could figure out most of them and use object of elimination and count squares to get the rest. WORD BANK: Ada Lovelace, Alan Turing, Albert Eins