Maestro n° 103 : Page 74 - Gr 71

XY-Chain Eclate Renforce

r5c9 -7- r5c5 +1+ r9c7 -6 => r9c9 ≠ 6. The candidates 1 in cells r59c3 used as strong link for the indirect link r5c5 +1+ r9c7