{"product_id":"4x4-goban-with-problem-booklet-via-qr-code-2026","title":"4x4 Goban with Problem Booklet via QR Code (2026)","description":"\u003cp\u003eThe Vintage team hand-crafted these mini-gobans, which are perfect for solving 4x4 problems. The residents of BadukHouse created a collection of 4x4 tsume-go and they are available through a QR code printed on the board.\u003c\/p\u003e\n\u003cp\u003eThis set was made for the 2026 US Go Congress so they are one-of-a-kind and there are a limited number. Each board was fashioned from hardwood (cedar or maple). The finished boards were laser-etched.\u003cbr\u003e\u003cbr\u003eThink 4x4 would be easy? Think again! Follow the QR code or \u003ca href=\"https:\/\/4x4.baduk.club\" title=\"Booklet\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eprint THIS BOOKLET\u003c\/a\u003e of problems. There are lots of mysteries to explore, and the hand-picked problems are guaranteed to entertain you and your friends.\u003cbr\u003e\u003cbr\u003eThese boards make a perfect gift, prize, or decoration.\u003c\/p\u003e","brand":"badukclub","offers":[{"title":"Default Title","offer_id":49836603277450,"sku":null,"price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/8251\/2778\/files\/PXL-20260802_020726757.jpg?v=1785708317","url":"https:\/\/store.baduk.club\/products\/4x4-goban-with-problem-booklet-via-qr-code-2026","provider":"badukclub","version":"1.0","type":"link"}