Senket — Big Jumps

If Red has no posts nearby to help, he cannot stop Blue from connecting.

If Red has no posts nearby to help, he cannot stop Blue from connecting.

 

5 Squares

When two posts are 5 squares apart as these are, with no opposing posts nearby, they can always be connected.

 

 

 

 

 

If Red plays at any of the four marked posts, Blue can connect with 2.

If Red plays at any of the four marked posts, Blue can connect with 2.

If Red plays 1 on the left, Blue plays 2 connecting on the right and forming a square diamond on the left. Red can block one or the other of the connections, but not both. Note that any of the other three highlighted points would fail in the same way.

 

 

 

 

 

If Red tries to block at any of the four marked posts, Blue can connect with 2.

If Red tries to block at any of the four marked posts, Blue can connect with 2.

If Red plays 1 on the right, Blue plays 2 connecting on the left and forming a square diamond on the right. Note that both the position above and this one can be flipped vertically. There is no post Red can play at, above or below, that will allow him to block Blue.

 

 

 

 

 

Without any nearby posts to help, Red can't stop Blue from connecting.

Without any nearby posts to help, Red can't stop Blue from connecting.

2 x 5 Squares

When two posts are at the corners of a 2×5 rectangle as these are, with no opponent’s posts around, they can always be connected.

 

 

 

 

 

No matter which of the four posts shown red chooses, Blue 2 connects.

No matter which of the four posts shown red chooses, Blue 2 connects.

If Red plays 1 on the left, Blue plays 2 connecting on the right and forming a square diamond on the left. If Red blocks the connection at A, Blue will connect at B, and vice versa. Any of the other three red posts shown fails the same way.

 

 

 

 

 

No matter what Red does, Blue will connect.

No matter what Red does, Blue will connect.

If Red plays 1 on the right, Blue plays 2 connecting on the left and forming a square diamond on the right.

 

 

 

 

 

 

Note that for a 2×5 jump, the long diamond can also be used, as well as the thin diamond. In the two examples shown below, the long diamond or the thin diamond must be used; the square diamonds shown above would fail because Red would be able to block both connections with one more post.

 

If Red plays at 1, the Thin Diamond connection will work.

If Red plays at 1, the Thin Diamond connection will work.

If Red plays at 1, the Long Diamond will work.

If Red plays at 1, the Long Diamond will work.

 

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