Alliance Power and Light - Exapunks
Here is my solution for Alliance Power and Light (40, 28, 40)
GRAB 300 COPY F X REPL GO COPY F X DROP MARK GO LINK 800 COPY 800 T REPL SPLIT COPY 802 T REPL SPLIT MARK CHECK HOST T TEST T = X TJMP SHUTDOWN LINK 801 JUMP CHECK MARK SPLIT LINK T REPL SPLIT JUMP CHECK HALT MARK SHUTDOWN @REP 4 NOOP @END COPY 0 #POWR
The NOOPs at the end are one (poor) way to deal with synchronization between the two exa that will shutdown the power.