Enjoy the chess board of circles.
do : x=800 : y=600 : ink rgb(255,255,255),1 : circle x/3-100+rnd(100),y/3-100+rnd(100),rnd(5) : ink rgb(255,0,0),1 : circle x/3+1+rnd(100),y/3-100+rnd(100),rnd(5) : ink rgb(255,255,255),1 : circle x/3+100+rnd(100),y/3-100+rnd(100),rnd(5) : ink rgb(255,255,255),1 : circle x/3+rnd(100),y/3+rnd(100),rnd(5) : ink rgb(255,0,0),1 : circle x/3+100+rnd(100),y/3+rnd(100),rnd(5) : ink rgb(255,0,0),1 : circle x/3-100+rnd(100),y/3+rnd(100),rnd(5) : ink rgb(255,255,255),1 : circle x/3+100+rnd(100),y/3+100+rnd(100),rnd(5) : ink rgb(255,255,255),1 : circle x/3-100+rnd(100),y/3+100+rnd(100),rnd(5) : ink rgb(255,0,0),1 : circle x/3+1+rnd(100),y/3+100+rnd(100),rnd(5) : loop
AMD Atherlon 2400+ XP, 380 DDr memeory, ATI Radeon 9000 64 DDR.
And a Katana.