Longest chess marathon

According to Official Guinness Records,

The longest chess marathon is 50 hr 1 min 7 sec and was achieved by Jacek Gajewski and Wojciech Waruga (both Poland), in collaboration with 'Miasto Katowice', in Katowice, Poland, from 15 to 17 December 2018.'Miasto Katowice' were the main organisers of the marathon record attempt.The two challengers played 'Fast Chess' in which the winner was awarded one point per win and 0.5 points for a draw. The overall game was won by Jacek Gajewski with 259.5 points to his rival's 254.5 points.

For a complete list of 2017 records, please visit 2017 Guinness Records in Poland.

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