Module:Chessboard/Chu shogi
local p = {}
 
 function p.dims()
 	return 12, 12
 end
 
 function p.letters()
 	return {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L'}
 end
 
 p.pattern = '%w%w%w'
 
 function p.image_board(size)
 	return string.format( '[[File:ChuShogiboard.svg|%dx%dpx|link=]]', 12 * size, 12 * size )
 end
 
 function p.image_square( pc, row, col, size )
 	local colornames = {
 		l = { m = 'white', f = 'white' },
 		d = { m = 'black', f = 'black' }
 	}
 	local piecenames = {
 		am = { name = 'angle mover', gender = 'm', japname='角', fulljapname='角行' },
 		bt = { name = 'blind tiger', gender = 'm', japname='虎', fulljapname='盲虎' },
 		cg = { name = 'copper general', gender = 'm', japname='銅', fulljapname='銅将' },
 		dh = { name = 'dragon horse', gender = 'm', japname='馬', fulljapname='龍馬' },
 		dk = { name = 'dragon king', gender = 'm', japname='龍', fulljapname='龍王' },
 		de = { name = 'drunk elephant', gender = 'm', japname='象', fulljapname='酔象' },
 		fl = { name = 'ferocious leopard', gender = 'm', japname='豹', fulljapname='猛豹 ' },
 		fc = { name = 'flying chariot', gender = 'm', japname='飛', fulljapname='飛車' },
 		fo = { name = 'flying ox', gender = 'm', japname='牛', fulljapname='飛牛' },
 		fs = { name = 'flying stag', gender = 'm', japname='鹿', fulljapname='飛鹿' },
 		pn = { name = 'foot soldier', gender = 'm', japname='歩', fulljapname='歩兵' },
 		fb = { name = 'free boar', gender = 'm', japname='猪', fulljapname='奔猪' },
 		fk = { name = 'free king', gender = 'm', japname='奔', fulljapname='奔王' },
 		gb = { name = 'go-between', gender = 'm', japname='仲', fulljapname='仲人' },
 		gg = { name = 'golden general', gender = 'm', japname='金', fulljapname='金将' },
 		hf = { name = 'horned falcon', gender = 'm', japname='鷹', fulljapname='角鷹' },
 		ic = { name = 'incense chariot', gender = 'm', japname='香', fulljapname='香車' },
 		jd = { name = 'jade general', gender = 'm', japname='玉', fulljapname='玉将' },
 		kg = { name = 'king general', gender = 'm', japname='王', fulljapname='王将' },
 		kn = { name = 'kirin', gender = 'm', japname='麒', fulljapname='麒麟' },
 		ln = { name = 'lion', gender = 'm', japname='獅', fulljapname='獅子' },
 		px = { name = 'phoenix', gender = 'm', japname='鳳', fulljapname='鳳凰' },
 		pr = { name = 'prince', gender = 'm', japname='太', fulljapname='太子' },
 		rc = { name = 'reverse chariot', gender = 'm', japname='反', fulljapname='反車' },
 		sm = { name = 'side mover', gender = 'm', japname='横', fulljapname='横行' },
 		sg = { name = 'silver general', gender = 'm', japname='銀', fulljapname='銀将' },
 		se = { name = 'soaring eagle', gender = 'm', japname='鷲', fulljapname='飛鷲' },
 		tn = { name = 'tokin', gender = 'm', japname='と', fulljapname='と金' },
 		vm = { name = 'vertical mover', gender = 'm', japname='竪', fulljapname='竪行' },
 		we = { name = 'whale', gender = 'm', japname='鯨', fulljapname='鯨鯢' },
 		wh = { name = 'white horse', gender = 'm', japname='駒', fulljapname='白駒' },
 		ia = { name = 'inverted angle mover', gender = 'm', japname='角', fulljapname='角行' },
 		ih = { name = 'inverted dragon horse', gender = 'm', japname='馬', fulljapname='龍馬' },
 		id = { name = 'inverted dragon king', gender = 'm', japname='龍', fulljapname='龍王' },
 		ie = { name = 'inverted drunk elephant', gender = 'm', japname='象', fulljapname='酔象' },
 		it = { name = 'inverted flying chariot', gender = 'm', japname='飛', fulljapname='飛車' },
 		ik = { name = 'inverted free king', gender = 'm', japname='奔', fulljapname='奔王' },
 		il = { name = 'inverted lion', gender = 'm', japname='獅', fulljapname='獅子' },
 		is = { name = 'inverted side mover', gender = 'm', japname='横', fulljapname='横行' },
 		iv = { name = 'inverted vertical mover', gender = 'm', japname='竪', fulljapname='竪行' }
 	}
 	local symnames = {
 		xx = 'black cross',
 		ox = 'white cross',
 		xo = 'black circle',
 		oo = 'white circle',
 		ul = 'arrow up-left',
 		ua = 'arrow up',
 		ur = 'arrow up-right',
 		la = 'arrow left',
 		ra = 'arrow right',
 		dl = 'arrow down-left',
 		da = 'arrow down',
 		dr = 'arrow down-right',
 		lr = 'arrow left-right',
 		ud = 'arrow up-down',
 		x0 = 'zero',
 		x1 = 'one',
 		x2 = 'two',
 		x3 = 'three',
 		x4 = 'four',
 		x5 = 'five',
 		x6 = 'six',
 		x7 = 'seven',
 		x8 = 'eight',
 		x9 = 'nine',
 	}
 	local colchar = {'A','B','C','D','E','F','G','H','I','J','K','L'}
     local color = mw.ustring.gsub( pc, '^.*(%w)(%w)(%w).*$', '%3' ) or ''
     local piece = mw.ustring.gsub( pc, '^.*(%w)(%w)(%w).*$', '%1%2' ) or ''
     local alt = colchar[col] .. row .. ' '
 
     if colornames[color] and piecenames[piece] then
 		alt = alt .. colornames[color][piecenames[piece]['gender']] .. ' ' .. piecenames[piece]['name']
     else
 		alt = alt .. ( symnames[piece .. color] or piece .. ' ' .. color )
 	end
 
 	fn = ''
 
 	if pc == 'aml' then
 		fn = 'Angle_Mover_(Chu_Hieroglyph)'
 	elseif pc == 'amd' then
 		fn = 'Angle_Mover_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'btl' then
 		fn = 'Blind_Tiger_(Chu_Hieroglyph)'
 	elseif pc == 'btd' then
 		fn = 'Blind_Tiger_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'cgl' then
 		fn = 'Copper_General_(Chu_Hieroglyph)'
 	elseif pc == 'cgd' then
 		fn = 'Copper_General_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'dhl' then
 		fn = 'Dragon_Horse_(Chu_Hieroglyph)'
 	elseif pc == 'dhd' then
 		fn = 'Dragon_Horse_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'dkl' then
 		fn = 'Dragon_King_(Chu_Hieroglyph)'
 	elseif pc == 'dkd' then
 		fn = 'Dragon_King_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'del' then
 		fn = 'Drunk_Elephant_(Chu_Hieroglyph)'
 	elseif pc == 'ded' then
 		fn = 'Drunk_Elephant_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'fll' then
 		fn = 'Ferocious_Leopard_(Chu_Hieroglyph)'
 	elseif pc == 'fld' then
 		fn = 'Ferocious_Leopard_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'fcl' then
 		fn = 'Flying_Chariot_(Chu_Hieroglyph)'
 	elseif pc == 'fcd' then
 		fn = 'Flying_Chariot_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'fol' then
 		fn = 'Flying_Ox_(Chu_Hieroglyph)'
 	elseif pc == 'fod' then
 		fn = 'Flying_Ox_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'fsl' then
 		fn = 'Flying_Stag_(Chu_Hieroglyph)'
 	elseif pc == 'fsd' then
 		fn = 'Flying_Stag_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'pnl' then
 		fn = 'Foot_Soldier_(Chu_Hieroglyph)'
 	elseif pc == 'pnd' then
 		fn = 'Foot_Soldier_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'fbl' then
 		fn = 'Free_Boar_(Chu_Hieroglyph)'
 	elseif pc == 'fbd' then
 		fn = 'Free_Boar_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'fkl' then
 		fn = 'Free_King_(Chu_Hieroglyph)'
 	elseif pc == 'fkd' then
 		fn = 'Free_King_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'gbl' then
 		fn = 'Go-Between_(Chu_Hieroglyph)'
 	elseif pc == 'gbd' then
 		fn = 'Go-Between_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'ggl' then
 		fn = 'Golden_General_(Chu_Hieroglyph)'
 	elseif pc == 'ggd' then
 		fn = 'Golden_General_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'hfl' then
 		fn = 'Horned_Falcon_(Chu_Hieroglyph)'
 	elseif pc == 'hfd' then
 		fn = 'Horned_Falcon_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'icl' then
 		fn = 'Incense_Chariot_(Chu_Hieroglyph)'
 	elseif pc == 'icd' then
 		fn = 'Incense_Chariot_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'jdl' then
 		fn = 'Jade_General_(Chu_Hieroglyph)'
 	elseif pc == 'jdd' then
 		fn = 'Jade_General_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'kgl' then
 		fn = 'King_General_(Chu_Hieroglyph)'
 	elseif pc == 'kgd' then
 		fn = 'King_General_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'knl' then
 		fn = 'Kirin_(Chu_Hieroglyph)'
 	elseif pc == 'knd' then
 		fn = 'Kirin_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'lnl' then
 		fn = 'Lion_(Chu_Hieroglyph)'
 	elseif pc == 'lnd' then
 		fn = 'Lion_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'pxl' then
 		fn = 'Phoenix_(Chu_Hieroglyph)'
 	elseif pc == 'pxd' then
 		fn = 'Phoenix_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'prl' then
 		fn = 'Prince_(Chu_Hieroglyph)'
 	elseif pc == 'prd' then
 		fn = 'Prince_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'rcl' then
 		fn = 'Reverse_Chariot_(Chu_Hieroglyph)'
 	elseif pc == 'rcd' then
 		fn = 'Reverse_Chariot_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'sml' then
 		fn = 'Side_Mover_(Chu_Hieroglyph)'
 	elseif pc == 'smd' then
 		fn = 'Side_Mover_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'sgl' then
 		fn = 'Silver_General_(Chu_Hieroglyph)'
 	elseif pc == 'sgd' then
 		fn = 'Silver_General_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'sel' then
 		fn = 'Soaring_Eagle_(Chu_Hieroglyph)'
 	elseif pc == 'sed' then
 		fn = 'Soaring_Eagle_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'tnl' then
 		fn = 'Tokin_(Chu_Hieroglyph)'
 	elseif pc == 'tnd' then
 		fn = 'Tokin_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'vml' then
 		fn = 'Vertical_Mover_(Chu_Hieroglyph)'
 	elseif pc == 'vmd' then
 		fn = 'Vertical_Mover_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'wel' then
 		fn = 'Whale_(Chu_Hieroglyph)'
 	elseif pc == 'wed' then
 		fn = 'Whale_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'whl' then
 		fn = 'White_Horse_(Chu_Hieroglyph)'
 	elseif pc == 'whd' then
 		fn = 'White_Horse_(Chu_Hieroglyph)-opposite'
 	elseif pc == 'ial' then
 		fn = 'Angle_Mover_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'iad' then
 		fn = 'Angle_Mover_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'ihl' then
 		fn = 'Dragon_Horse_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'ihd' then
 		fn = 'Dragon_Horse_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'idl' then
 		fn = 'Dragon_King_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'idd' then
 		fn = 'Dragon_King_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'iel' then
 		fn = 'Drunk_Elephant_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'ied' then
 		fn = 'Drunk_Elephant_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'itl' then
 		fn = 'Flying_Chariot_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'itd' then
 		fn = 'Flying_Chariot_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'ikl' then
 		fn = 'Free_King_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'ikd' then
 		fn = 'Free_King_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'ill' then
 		fn = 'Lion_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'ild' then
 		fn = 'Lion_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'isl' then
 		fn = 'Side_Mover_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'isd' then
 		fn = 'Side_Mover_(Chu_Hieroglyph)-opposite-inverted'
 	elseif pc == 'ivl' then
 		fn = 'Vertical_Mover_(Chu_Hieroglyph)-inverted'
 	elseif pc == 'ivd' then
 		fn = 'Vertical_Mover_(Chu_Hieroglyph)-opposite-inverted'
 	end
 
 	return string.format( '[[File:%s.svg|%dx%dpx|alt=%s|%s|top]]', fn, size, size, alt, alt )
 
 end