# If a matrix Q of a QUBO problem corresponds perfectly to an original optimization problem P, can Qbsolve from D-wave return an infeasible solution?

**URL:** <https://forum.devtalk.com/t/if-a-matrix-q-of-a-qubo-problem-corresponds-perfectly-to-an-original-optimization-problem-p-can-qbsolve-from-d-wave-return-an-infeasible-solution/56883>\
**Category:** Quantum Computing\
**Tags:** qubo, quantum-computing, dwave\
**Created:** [27 May 2022 20:57 UTC](https://forum.devtalk.com/t/if-a-matrix-q-of-a-qubo-problem-corresponds-perfectly-to-an-original-optimization-problem-p-can-qbsolve-from-d-wave-return-an-infeasible-solution/56883 "2022-05-27T20:57:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![aas1992](https://forum.devtalk.com/user_avatar/forum.devtalk.com/aas1992/32/4183_2.png) [@aas1992](https://forum.devtalk.com/u/aas1992)\
**Post date:** [27 May 2022 20:57 UTC](https://forum.devtalk.com/t/if-a-matrix-q-of-a-qubo-problem-corresponds-perfectly-to-an-original-optimization-problem-p-can-qbsolve-from-d-wave-return-an-infeasible-solution/56883/1 "2022-05-27T20:57:45Z")

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"If a matrix Q of a QUBO problem corresponds perfectly to an original optimization problem P, can QBsolv from D-wave return an infeasible solution? If yes, why?