🟢 small · 21 cities

21-city problem (Groetschel)

City layout for Gr 21, derived from its distance matrix
Layout derived from the distance matrix — this instance publishes no coordinates.

Published results

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PropertyValue
Namegr21
Cities21
TypeEXPLICIT
Optimal tour2,707
SourceTSPLIB95
CreatorTSPLIB — Gerhard Reinelt, University of Heidelberg
LicenseTSPLIB95 terms
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