Maestro n° 103 : Page 80 - Gr 77

XY-Chain Eclate Renforce

r3c1 +1+ r9c9 -5- r7c9 -4- r7c3 -6 => r3c3 et r7c1 ≠ 6. The candidates 1 in cells r6c19 used as strong link for the indirect link r3c1 +1+ r9c9