Yes, it's possible to enter the Czech Republic, but if the following conditions are met:

• for this visa was made a trip to Spain;

• the number of days and entries allows you to visit the Schengen countries again,

• the tourist was not more than 90 days in the last 6 months in the Schengen area.

If the period of the Spanish visa provides for the coverage of dates for staying in the Czech Republic, then it is possible. It is desirable that there is still a spare "corridor", even for a few more days of the visa, after leaving the Czech Republic.