Saikyou Onmyouji no Isekai Tenseiki 11
Board game in #最強陰陽師:
- Not chess, board is 9x9
- White started with 10 pieces on the board and an 8-piece handicap; but later has 20 pieces total (2 captured pieces)
- Black started with 18 pieces, later has 16
Conjecture: pieces can change colour by magic