Saute Chicken, Onion, Garlic, Chilies, Tomatoes, Oregano And Soy Sauce For 10 Minutes In Olive Oil. Add Water And Salt And Pepper. Cook Over Low Heat Until Meat Is Done. Add Kidney Beans And Cook For 10 Minutes. Add Potatoes And Simmer For 45 Minutes Or Until Potatoes Are Done. Add Cornstarch To Thicken Sause. Serve Over Rice.