SM 2024 R3 - Math & Neighbours (5^{th} - 11^{th} Apr) Score •Discuss

Riad's April Contest 2024 (13^{th} - 21^{st} April) has started •Discuss

Riad's April Contest 2024 (13

@ 2019-11-23 6:15 PM (#27363 - in reply to #8611) (#27363) Top | |

Posts: 25 Country : United Kingdom |
If you add up the clues on the top and bottom rows, you get 369. Adding up the clues in the left and right gives 327. The difference between the two is 42. Observe that the arrows on the left and right point to 6 cells which are not pointed to by the arrows on top and bottom (with minimum sum 3*(1+2)=9), and similarly the arrows on top and bottom point to 6 cells not pointed to by arrows on the left and right (maximum sum 3*(8+9)=51). The difference between them must be 42, and since the maximum difference between them is 42, we can establish a few 12 and 89 pairs. |

@ 2019-11-25 8:52 AM (#27364 - in reply to #27363) (#27364) Top | |

Posts: 417 Country : India |
Puzzle_Maestro - 2019-11-23 6:15 PM If you add up the clues on the top and bottom rows, you get 369. Adding up the clues in the left and right gives 327. The difference between the two is 42. Observe that the arrows on the left and right point to 6 cells which are not pointed to by the arrows on top and bottom (with minimum sum 3*(1+2)=9), and similarly the arrows on top and bottom point to 6 cells not pointed to by arrows on the left and right (maximum sum 3*(8+9)=51). The difference between them must be 42, and since the maximum difference between them is 42, we can establish a few 12 and 89 pairs. Thanks a lot ! I could complete it with your pointer. |