Once again, the great facilitator is none other than our best friend, the UR. As of minute 16 (and for quite a while already), the 47 pair has been identified at the bottom of column 9. We have also seen that we have 7s in a matching position at the bottom of column 4. And we know that the 4s either join the 7s in column 4, or they are in column 5. The choice is evident: 4s in column 5 in block 8 and hence, 4 in r1c4 and 5 in r1c5. The puzzle gets rather easy from there. Nice puzzle
Once again, the great facilitator is none other than our best friend, the UR. As of minute 16 (and for quite a while already), the 47 pair has been identified at the bottom of column 9. We have also seen that we have 7s in a matching position at the bottom of column 4. And we know that the 4s either join the 7s in column 4, or they are in column 5. The choice is evident: 4s in column 5 in block 8 and hence, 4 in r1c4 and 5 in r1c5. The puzzle gets rather easy from there. Nice puzzle