<s>
Cray	B-General_Concept
Blitz	I-General_Concept
was	O
a	O
computer	B-Application
chess	I-Application
program	O
written	O
by	O
Robert	O
Hyatt	O
,	O
Harry	O
L	O
.	O
Nelson	O
,	O
and	O
Albert	O
Gower	O
to	O
run	O
on	O
the	O
Cray	O
supercomputer	B-Architecture
.	O
</s>
<s>
Cray	B-General_Concept
Blitz	I-General_Concept
participated	O
in	O
computer	B-Application
chess	I-Application
events	O
from	O
1980	O
through	O
1994	O
when	O
the	O
last	O
North	O
American	O
Computer	B-Application
Chess	I-Application
Championship	O
was	O
held	O
in	O
Cape	O
May	O
,	O
New	O
Jersey	O
.	O
</s>
<s>
Cray	B-General_Concept
Blitz	I-General_Concept
won	O
several	O
ACM	O
computer	B-Application
chess	I-Application
events	O
,	O
and	O
two	O
consecutive	O
World	O
Computer	B-Application
Chess	I-Application
Championships	O
,	O
the	O
first	O
in	O
1983	O
in	O
New	O
York	O
City	O
,	O
and	O
the	O
second	O
in	O
1986	O
in	O
Cologne	O
,	O
Germany	O
.	O
</s>
<s>
The	O
program	O
Crafty	B-Application
is	O
the	O
successor	O
to	O
Cray	B-General_Concept
Blitz	I-General_Concept
and	O
is	O
still	O
active	O
and	O
under	O
development	O
.	O
</s>
