Upper Bounds on the Number of Shuffles for Two-Helping-Card Multi-input and Protocols. - Takuto Yoshida; Kodai Tanaka; Keisuke Nakabayashi; Eikoh Chida; Takaaki Mizuki (CANS, 2023)

Two UNO Decks Efficiently Perform Zero-Knowledge Proof for Sudoku. - Kodai Tanaka; Takaaki Mizuki (FCT, 2023)

Only Two Shuffles Perform Card-Based Zero-Knowledge Proof for Sudoku of Any Size. - Kodai Tanaka; Shun Sasaki; Kazumasa Shinagawa; Takaaki Mizuki (SOSA, 2025)