Close up view of the photospheric magnetic field configuration. Left panel: SDO/HMI line-of-sight magnetogram of AR 12741 on 15 May 2019 at around flare maximum. The numbers indicate the polarities where the loops associated with the energy release during the flare could be anchored. Right panel: AIA1600 image including a sketch of the connectivities related to the loops involved in the flare. Blue and light blue continuous lines indicate loops before reconnection, while red lines would correspond to reconnected loops. Plus and minus signs mark the polarity sign of the footpoints. Both panels cover the same field of view; their sizes are 94″ in the horizontal and 87″ in the vertical directions. The convention for the magnetic field map is the same as in Fig. 2.