#define xchess_mask_width 16
#define xchess_mask_height 16
static char xchess_mask_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x00, 0xf8, 0x00, 0xfe, 0x80, 0xff,
   0xc0, 0xff, 0x60, 0xff, 0xb0, 0xfd, 0xd8, 0x66, 0x6c, 0x3b, 0x76, 0x1d,
   0x98, 0x1d, 0xcc, 0x0c, 0x60, 0x00, 0x00, 0x00};