VPH Deluxe Double-Convex Go Set - New Yunzi Stones with 0.8" Thick Bamboo Reversible Board & Dual Bamboo Jars

1. About the Set Identical board specifications and materials as previous version: ①Reversible moso bamboo board (Go/Chinese chess ) ②Laser-engraved grids with carbonized finish ③Two bamboo storage jars included

2. Board & Jar Specifications Same dimensions as previous model: ①Board: 18.5"x17.3"x0.98" ②Grid units: 0.94"x0.86" ③Jars: 5.5"Hx3.5"D

3. New Double-Convex Yunzi Stones 361 stones (181B/180W) with enhanced features: ①Double-convex design: Optimized for professional play with 0.83" diameter x 0.36" height (25% thicker than single-convex version) ②Improved tactile feedback: Curved surfaces enhance stone placement control ③Same advanced manufacturing: A：Machine-molded precision with traditional formulas B：12+ stage production process C：Obsidian-black/green and milky-white coloration

4. Professional Advantages ①Preferred by tournament players: Double-convex shape allows easier stone flipping ②Official equipment of European Go Federation ③Maintains all benefits of previous model: A：Cultural heritage craftsmanship B：Carbonized board durability C：Suitable for casual and competitive play

5. Yunzi Heritage Story Identical historical narrative as previous versions to maintain brand consistency: ①Early 20th century technique loss ②1970s revival by Kunming researchers ③1980 national recognition and diplomatic gifting ④2021 UNESCO Intangible Cultural Heritage status