Intermediate: Clearing a Lane for a Miner

See the game position above

Red to move

Red to sacrifice miner by moving it from I5-I6. If the Blue Sergeant captures it, then the Red Lieutenant can either capture the Blue Sergeant or force it to move left and make a way for the next miner to come through.

This can also work if the miner at I5 is not a miner, but an unknown piece, as the Sergeant won't want to risk a miner passing through. Also, the other miners on row 5 don't need to be miners but need to be unknown pieces. The more unknown pieces, the better the chance that Blue can predict which pieces are miners.