Before the World Chess Championship 2010 match with Veselin Topalov, Vishwanathan Anand, who had booked on the flight Frankfurt–Sofia on 16 April, was stranded due to the cancellation of all flights following the volcano ash cloud from Eyjafjallajökull. Anand asked for a three-day postponement, which the Bulgarian organisers refused on 19 April. Anand eventually reached Sofia on 20 April, after a 40-hour road journey.