Instance Created:  July 29, 2001
Number of Cities:  1,979
Optimal Value:  86891
Solved:  July 30, 2001
Solution Method:  concorde (-C 24), CPLEX 6.5 LP solver
Solution Time:  9809.20 seconds, Compaq Alpha EV6 500 MHz

Notes

1. Concorde is our linear-programming based TSP solver.

2. linkern is an implementation of Martin, Otto, and Felten's Chained Lin-Kernighan heuristic. It is included in the Concorde code.

3. LKH is Keld Helsgaun's powerful implementation of the Lin-Kernighan heuristic.

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