Pontefract Chess Club lost 5½-2½ at home to York C in Yorkshire League Division Two despite being gifted two points start.
York were without two players who were involved in a road accident leaving the motorway at Pontefract.
The defeat left Pontefract in the bottom two relegation places.
Pontefract’s Dave Parton had a promising attack only to lose two pawns after an incorrect capture using a rook instead of king.
Jonathan Mahoney’s opponent arrived 45 minutes late and rushed his moves but won a bishop and the game.
Peter Cooper had doubled pawns and wisely accepted his opponent’s draw offer.
The last three games looked even but Pontefract lost the lot.
Mateusz Szczepaniuk only had to keep his rook to maintain a draw but didn’t and lost.
Norman Carr failed to hold his position to stop a mating combination and lost.
Steve Parker, in a complicated position, had to give up his knight up for two pawns to leave Pontefract well beaten.