Maestro n° 103 : Page 85 - Gr 82

Chain Raccord Renforce 1

r6c3 -7- r2c3 -6- r2c1 +4+ r9c4 -3- r9c3 -8 => r78c3 ≠ 8. The candidates 4 in cells r1c4 et r2c5 used as strong link for the indirect link r2c1 +4+ r9c4