c.height=c.width=W=255
c.style.border='4px solid #000'
V=3
s=t=L=U=0
u={38:-2,40:2}
l={37:-1,39:1}
h=X=10
Y=125
with([])with(Math)with(a)K=r=random,
P=function(x,y){x=(x+~~y*W)*4
for(y=1;y<5;)I.data[x++]=y++>>2?W:9},S=function(x,y,p){for(J=0;J++<56;)p&1&&P(x+J%8,y+J/8),p/=2},onkeydown=function(e){(v=u[e=e.which])?U=v:(v=l[e])?L=v:h&&(h=0,t=X+8,b=Y+1)},onkeyup=function(e){u[e=e.which]==U?U=0:l[e]==L?L=0:0},setInterval(function(){X+=L
Y+=U
I=createImageData(W,W)
for(i=V;i>0;)S(W-i--*10,245,Z=17853868722516492);S(X,Y,Z);h||P(t,b)&(h=t==(t=min(max(0,t+4),W-8)))
forEach(function(v,i){S(x=--v[0],y=v[1],G);(x<1||x-X>=0&&x-X<8&&abs(y-Y)<8)?splice(i,1)+V--+(K=function(){fillStyle="red"
fillRect(0,0,W,W)
fillStyle='#000'
K=r}):!h&&x-t>=0&&x-t<8&&b-y>=0&&b-y<8?h=splice(i,1)+(++s%20||++V):0})
V>0&&S(2,3,G=27160417194573408)+putImageData(I,0,0)+fillText(s,15,10);K((g=length<4&&r()>.93&&25+(r()*25<<3))&&push([246,g]))},70)