check_status = function()
	for y=1,2 do
		for x=1,2 do
			if Problem.data[y][x] == '' then
				return ''
			elseif Problem.data[y][x] ~= Solution.data[y][x] then
				return 'no'
			end
		end
	end
	return 'yes'
end

draw_status = function()
	local w = App.width('check')
	local x = Safe_width-w-20
	local y = 50+love.graphics.getFont():getHeight()+150
	button(Buttons, 'check', {x=x, y=y, w=w+10, h=love.graphics.getFont():getHeight()+10, bg={r=0.6, g=0.8, b=0.6},
		icon = function(p)
			App.color{r=0, g=0, b=0}
			love.graphics.print('check', p.x+5, p.y+5)
		end,
		onpress1 = function()
			Status = check_status()
		end,
	})
	x = Safe_width-260
	y = y+120
	love.graphics.rectangle('line', x,y, 250,love.graphics.getFont():getHeight()+20)
	if Status == 'yes' then
		App.color{r=0, g=0.6, b=0}
		love.graphics.print('yes!', x+10, y+10)
	elseif Status == 'no' then
		App.color{r=1, g=0, b=0}
		love.graphics.print('sorry', x+10, y+10)
	end
end

draw_next_button = function()
	local w = App.width('next')
	button(Buttons, 'next', {x=Safe_width-w-20, y=50, w=w+10, h=love.graphics.getFont():getHeight()+10, bg={r=0.6, g=0.8, b=0.6},
		icon = function(p)
			App.color{r=0, g=0, b=0}
			love.graphics.print('next', p.x+5, p.y+5)
		end,
		onpress1 = function()
			animate(new)
		end,
	})
end

-- Is the answer correct?
Status = ''  -- incomplete. Can also be 'yes' or 'no'

	Status = ''

	local w = App.width('next')
	button(Buttons, 'next', {x=Safe_width-w-20, y=50, w=w+10, h=love.graphics.getFont():getHeight()+10, bg={r=0.6, g=0.8, b=0.6},
		icon = function(p)
			App.color{r=0, g=0, b=0}
			love.graphics.print('next', p.x+5, p.y+5)
		end,
		onpress1 = function()
			animate(new)
		end,
	})

	draw_next_button()
	draw_status()