--硫酸のたまった落とし穴
function c41356846.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_POSITION+CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(c41356846.target)
	e1:SetOperation(c41356846.activate)
	c:RegisterEffect(e1)
end
function c41356846.filter(c)
	return c:IsFacedown()
end
function c41356846.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and c41356846.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(c41356846.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	local g=Duel.SelectTarget(tp,c41356846.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,1,0,0)
end
function c41356846.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFacedown() then
		Duel.ChangePosition(tc,0,POS_FACEUP_ATTACK,0,POS_FACEUP_DEFENCE)
		if tc:IsDefenceBelow(2000) then
			Duel.Destroy(tc,REASON_EFFECT)
		else
			Duel.ConfirmCards(1-tc:GetControler(),tc)
			Duel.ChangePosition(tc,POS_FACEDOWN_DEFENCE)
		end
	end
end
