3 ms·
In particular that means that if you fill the border up to a depth of 2 on one board with pieces, it becomes a theoretically inpenetrable fortress. For an over
by Turneyboy 1y ago
In particular that means that if you fill the border up to a depth of 2 on one board with pieces, it becomes a theoretically inpenetrable fortress.
For an overdone example see 2024,4219.