There currently aren't enough spaces in the hand to accommodate all the droppable piece types (there are 19 in total). You will need a second column of hand spaces on each side to account for this.
Black Running Leopard and Black Running Wolf are swapped from where they should be in the initial setup.
@François Houdebert,
I saw your Jocly implementation for Chu Seireigi. It works much better than it used to.
I went through and tested everything, and here is a comprehensive list of all known errors that I found:
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Piece Movement/Promotion Errors
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Ram's-Head Soldier and Prancing Stag are not forced to promote when reaching the last rank (these pieces must promote on last rank)
Strong Bear (Starting and Promoted) still has its old move (should move one square diagonally or sideways)
Whale is missing its forward orthogonal step
Flying Swallow is not forced to promote when reaching the last two ranks (this piece must promote on last two ranks)
White Golden Bird is missing its sideways orthogonal leaps, Black Golden Bird is missing its (1,-2) leap from White's perspective
Kirin promotes to Lion (should promote to Bishop) and White Kirin moves has extra (2,2) leap in all directions (should move as in Chu Shogi)
Phoenix promotes to Queen (should promote to Rook)
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Board Setup Errors
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There currently aren't enough spaces in the hand to accommodate all the droppable piece types (there are 19 in total). You will need a second column of hand spaces on each side to account for this.
Black Running Leopard and Black Running Wolf are swapped from where they should be in the initial setup.