A187 had a nice cage pattern by Ronnie, based on the Christmas scene, but as far as the Killer Techniques forum is concerned the main interest is in the bottom two rows, specifically the way the cages at R8C4, R8C5 and R8C6 project up from R9 and their cage totals.
In Assassin 187 V2 this is the position after the Prelims
Now we can use
45 rule on R9 2 outies R8C46 = 1 innie R9C5 + 7, IOU no 7 in R8C46
Note that, in this case, 45 rule on R9, 3 outies R8C456 = 22 will also be needed to lock 9 for R8 and N8.
These eliminations can also be made by CCC. In this case I'm inclined to think that CCC is the easier way, since I find the 3 outies from R9 more obvious than 2 outies and 1 innie.