{"product_id":"the-polar-bear-system-strong-potent-9781523904556","title":"The Polar Bear System: Strong \u0026 potent!","description":"1.f4 is the Bird opening. Henry Bird played it. He wanted to leave the mainstream and create new original positions. He liked a setup with b3 and Bb2. The Polar Bear System (PBS) played with the same intention. To leave the trodden theory paths and enter new undiscovered terrain. The system starts with a fianchetto of the Kings Bishop after 1.f4, d5. PBS players want to enter exciting and original positions where it is rough for Black to play for a flat equality. The book is for club players, but also professionals can get inspiration. The book contains both volume 1 \u0026amp; volume 2. GM Henrik Danielsen www.polarbearsystem.com\u003cbr\u003e","brand":"Createspace Independent Publishing Platform","offers":[{"title":"Default Title","offer_id":50854211125522,"sku":"9781523904556","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_7a82faa4-d012-4dc0-ba12-48d4516a42ac.jpg?v=1737462590","url":"https:\/\/surprise-castle.myshopify.com\/products\/the-polar-bear-system-strong-potent-9781523904556","provider":"Surprise Castle","version":"1.0","type":"link"}