The Neustadtl score is a scoring system often used to break ties in chess tournaments. It is named after Hermann Neustadtl, who proposed it in a letter published in Chess Monthly in It is often called the Sonneborn-Berger score , though this is something of a misnomer, since William Sonneborn and Johann Berger were actually strong critics of the system; they proposed their own tie-breaking system which was never popular and is not used today. A player's Neustadtl score is calculated by adding the sum of the conventional scores of the players they have defeated to half the sum of the conventional scores of those they have drawn against. As an example of the system in action, here is the cross-table of the 8th Correspondence Chess World Championship Final:.
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