Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | City | Opponent | Results¹ | Type of game |
| --- | --- | --- | --- | --- |
| March 31 | Bruxelles , Belgium | Belgium | 1:0 | Euro '64 Qualifying |
| June 19 | Belgrade | Sweden | 0:0 | Euro '64 Qualifying |
| September 18 | Malmö , Sweden | Sweden | 2:3 | Euro '64 Qualifying |
| October 6 | Belgrade | Hungary | 2:0 | Friendly |
| October 27 | Bucarest , Romania | Romania | 1:2 | Friendly |
| November 3 | Zagreb | Czechoslovakia | 2:0 | Friendly |
Question:
Who was the opposing team during the game in Zagreb?
Answer:
Czechoslovakia