diff --git a/piste3d.rb b/piste3d.rb
new file mode 100644
index 0000000..27d9a75
--- /dev/null
+++ b/piste3d.rb
@@ -0,0 +1,24 @@
+require './piste.rb'
+
+class Piste3d < Piste
+
+	def initialize x, y, z
+		@x = x
+		@y = y
+		@z = z
+	end
+
+	def siirra(dx, dy, dz)
+    	@x += dx
+   		@y += dy
+   		@z += dz
+  	end
+
+	def etaisyys_origosta
+    	Math.sqrt(@x*@x + @y*@y +@z*@z)
+ 	end
+
+	def to_s
+		"(#{@x}, #{@y}, #{@z})"
+	end
+end
\ No newline at end of file
diff --git a/varipiste.rb b/varipiste.rb
new file mode 100644
index 0000000..24dee53
--- /dev/null
+++ b/varipiste.rb
@@ -0,0 +1,14 @@
+require './piste.rb'
+
+class Varipiste < Piste
+
+	def initialize(x, y, vari)
+		@x = x
+		@y = y
+		@vari = vari
+	end
+
+	def to_s
+		"(#{@x}, #{@y}) #{@vari}"
+	end
+end
\ No newline at end of file