Table:
text: 1967–68 Chicago Black Hawks season
Montreal Canadiens 4, Chicago Black Hawks 1
Montreal Canadiens 4, Chicago Black Hawks 1
Date_ Visitor Score Home Record
April 18 Chicago Black Hawks 2–9 Montreal Canadiens 0-1
April 20 Chicago Black Hawks 1–4 Montreal Canadiens 0-2
April 23 Montreal Canadiens 4–2 Chicago Black Hawks 0-3
April 25 Montreal Canadiens 1–2 Chicago Black Hawks 1-3
April 28 Chicago Black Hawks 3–4 Montreal Canadiens 1-4

Question: What was the score of Montreal Canadiens 4, Chicago Black Hawks 1 in 1967-68 season on April 23?