Did it, no green, no guess, no problem. Having learned to look for block pincers, I breezed right through everything.
What is a block pince, Unike?
Digondda, you look for a block pincer situation where the possible cells for one number form a complete loop around a large piece of the board. Then it may be that two remote cells must both be the same number, and if so, then these two cells "guard" up to five or even six cells in another block, like a pincer on that block. If the pincer makes it impossible to place the number anywhere in that block, then you know you need a different number in the pincer points. I've seen three different types of block pincers in the last six weeks or so.