#define checks_width 16
#define checks_height 16
static char checks_bits[] = {
0x33, 0x33, 
0x33, 0x33, 
0xcc, 0xcc, 
0xcc, 0xcc, 
0x33, 0x33, 
0x33, 0x33, 
0xcc, 0xcc, 
0xcc, 0xcc, 
0x33, 0x33, 
0x33, 0x33, 
0xcc, 0xcc, 
0xcc, 0xcc, 
0x33, 0x33, 
0x33, 0x33, 
0xcc, 0xcc, 
0xcc, 0xcc, 

};