Maestro n° 103 : Page 86 - Gr 83

AIC Type 1

r3c1 =4= r3c4 -4- r8c4 =4= r8c7 -4-5- r8c7 =5= r8c1 -5- r7c2 =5=4= r7c2 => r2c2 et r7c1 ≠ 4