diff --git a/src/go/engine.py b/src/go/engine.py
new file mode 100644
--- /dev/null
+++ b/src/go/engine.py
@@ -0,0 +1,59 @@
+import core
+
+
+def transitionSequence(state1, state2, diff, limit=0):
+	return []
+
+
+class SpecGo(core.Go):
+	def __init__(self):
+		super().__init__()
+		self._diff=[]
+
+	def load(self,state):
+		for (r,row) in enumerate(state):
+			for (c,x) in enumerate(row):
+				self.board[r][c]=x
+
+	def listRelevantMoves(self,diff):
+		res=([],[])
+		for d in diff:
+			(r,c,action,color)=d
+			colorKey=(1-color)<<1
+			if action!="-":
+				res[colorKey].append((r,c))
+			if action!="+":
+				self._helper.clear()
+				self._helper.floodFill(color,r,c)
+				res[colorKey].extend(self._helper.getLiberties())
+		return res
+
+
+class Engine:
+	def __init__(self):
+		self._g=SpecGo()
+		self._diff=[]
+
+	def load(self,state1,diff):
+		self._g.load(state1)
+		self._diff=diff
+
+	def iterativelyDeepen(self,state2):
+		for i in range(1,10):
+			seq=self.dfs(state2,i)
+			if seq: return seq
+
+	def dfs(self,state2,limit):
+		g=self._g
+		for m in g.listRelevantMoves():
+			g.doMove(m)
+			if g.board==state2: return m
+			if limit>1:
+				seq=self.dfs(state2,limit-1)
+				if seq:
+					seq.append(m)
+					return seq
+			g.undoMove(m)
+		return False
+
+eng=Engine()