Puzzle 013

[Luizz]

puzzle_013.png (32.91 KiB) Viewed 3769 times

White to win in (max) 10 moves

I kinda want to revieve this puzzle section, as I think it can help with sharing interesting positions and strenghtening calculation skills.
This position was in my recent game with Jrton, and in my opinion one of the coolest escapes I've done recently. Even though it still looks like an early game, the win for white is forced. This position greatly showcasts how attacking on multiple corners and making use of open files can be done as white.

Feel free to try and solve it, even though its 10 moves, it shouldn't be too hard

[Ytreza]

Nice puzzle!

I assume the first move is king f6-c6.

If black blocks the lower left, then the king goes to c8 and black must block the access to the j column. Then the king has a forced escape on the upper left corner.

If black blocks the upper left, then the king goes to c1, forcing b6-b1, then king to c4 threatening to take b1 and escape in the lower left, or to access the j column.

If in either variation the king reaches the j column, then black must block the lower right corner and the king has a forced escape on the upper right corner.

It's clear that the j column is key. So after f6-c6 the best move for black is to play on the j column, e.g. k6-j6. Then I can't see a forced win. To keep his potential in the upper left corner, white must prevent b6-b10, either with f7-b7, but black can just capture, or c10-b10, or c10-a10, but I don't see a forced continuation after a7-c7, although the fight is going to cost quite a bit for black.

Probably still missing something. Definitively the hardest puzzle here