Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card is Special Summoned: Change all other Special Summoned monsters on the field to face-down Defense Position. You can only use the effect of "Terrene Toothed Tsuchinoko" once per turn.
--土地鋸
--Terrene Toothed Tsuchinoko
local s,id=GetID()
function s.initial_effect(c)
	--position
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsFaceup() and c:IsCanTurnSet() and c:IsSpecialSummoned()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,e:GetHandler())
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,#g,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,e:GetHandler())
	Duel.ChangePosition(g,POS_FACEDOWN_DEFENSE)
end