C4 LOGIC

summon falling_block ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:falling_block,Block:redstone_block,Time:1,Passengers:[{id:falling_block,Block:activator_rail,Time:1,Passengers:[{id:commandblock_minecart,Command:gamerule commandBlockOutput false},{id:commandblock_minecart,Command:fill ~2 ~-3 ~-1 ~6 ~-1 ~1 stained_hardened_clay 4 hollow},{id:commandblock_minecart,Command:fill ~2 ~-2 ~-1 ~6 ~-2 ~1 stained_glass 13 0 stained_hardened_clay},{id:commandblock_minecart,Command:fill ~3 ~-2 ~ ~5 ~-2 ~ chain_command_block 5},{id:commandblock_minecart,Command:setblock ~5 ~-2 ~ chain_command_block 13},{id:commandblock_minecart,Command:setblock ~3 ~-2 ~ repeating_command_block 5},{id:commandblock_minecart,Command:blockdata ~5 ~-2 ~ {auto:1,Command:kill @e[type=armor_stand,score_sa2_min=1]}},{id:commandblock_minecart,Command:blockdata ~4 ~-2 ~ {auto:1,Command:testfor @e[type=armor_stand,score_sa2_min=1]}},{id:commandblock_minecart,Command:blockdata ~3 ~-2 ~ {auto:1,Command:/execute @e[type=armor_stand,score_sa2_min=1] ~ ~ ~ /summon  tnt ~ ~ ~}},{id:commandblock_minecart,Command:setblock ~ ~ ~1 command_block 0 0 {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:commandblock_minecart,Command:setblock ~ ~-1 ~1 redstone_block},{id:commandblock_minecart,Command:kill @e[type=commandblock_minecart,r=1]}]}]}]}