Ay, professionals...

he initially wrong decision, vertically, 10 and 11, each lacking one cell, they all will be built. My opinion, I'm not a Pro or even a Amateur.

Only solution that repeatedly come to the same, 20 times ticking, not to be mistaken, it also appears that I'm doing wrong?

When you solution put the correct number of cells? or like a Chess player? That's what there argument is, I think, is not enough filled, I have decided with the vertical 11 and where a solution was given.

And on what basis do you put these cells, I do not see, that is the essence

There is just one unity in each column, counting from the top and from the bottom, it comes out as you, only without the red.

Those below marked in red vertically in the second bottom 1 and 2 - on this basis and put 10 and 11, judging by the screenshot of the Chess - at the bottom of the solution and not going horizontally.

The essence of something I decide MYSELF from scratch and I come to his screen over and over again, I can consider thank God, and I turns out that if you count 10 and 11 given the six in the center and the point 10 from the bottom, we get no red points, which I did not realize, on top of one one should. departing from this logic I have no right to paint even lower than it already is.

I certainly understand that there is a hammer and intuition can tyknut. but the account does not come out, though I a thousand times think, I have red items are not paint

can't explain here using the keys, and You don't understand why when You consider the expense of 6 at the top and not come at the expense of the bottom 1 and 2 in the second row.

OK, the buoy childish, that's my 1st step, is it right? unity, to understand, as I argue SPOILER

I don't understand how to enter 1 and 2 from the bottom, there is not a method of crossing? Something to keep in mind? Some invisible assumptions?

I did crossword puzzles is much larger and there were no such difficulties, whether my head is not in order.... I know all possible solutions. Then I do not see the intermediate step, some who see you

Honestly? I don't understand why You start a decision, and I decided to start from the bottom, I can something not so did not deny it, but the tip I didn't touch at the beginning of the solution.

Explain on fingers a few of his first steps as you these 10 and 11 set, please, then I can see what I've missed.

Please forgive me, but I don't know what to discuss here. Obviously, purely logical, or in other words, in the classical way the problem is not solved. To clarify - classical, or logical solution is one in which each next step is made on the basis of information strictly from one row or column. If any step requires further information from adjacent rows or columns, this is a search method that is actually selection. But the selection of complex or simple in this problem, this is a subjective question. I personally think that simple.

Thank you clearing that up, apparently people who are not one hundred decided to see it as the multiplication table, and I just do not have enough experience. I decide just village

@Alisa_Anufrieva, when a logical decision, you have no right to put the red cells where you showed. In the last row, for example, one can theoretically stand in the first and in the fifth cell, as well as deuce in any of the last three. Your placement - just guessing, that is exactly the selection.