{"localization":"In C10, we put 2 boxes of 4, which makes it possible to complete C11 and, consequently, C10, L20 and L13. In C9, the two remaining 1\u0026#39;s only have one place. In L14 and L17, we put 2 boxes of 5 and one box of 4. By putting the crosses around, the last 1 of C4 is placed and completes L19. The end does not require any reasoning!","ok":true}