Colossus 4 Chess (1986)(CDS Microsystems)
Colossus 4 Chess (1986)(CDS Microsystems)[a2]
Colossus 4.0 – Chess (1986)(CDS)[a][CHESS Start]
Colossus 4.0 – Chess (1986)(CDS)[a3][CHESS Start]
Colossus 4.0 – Chess (1986)(CDS)[a2][CHESS Start]
Colossus 4.0 – Chess (1986)(CDS)[CHESS Start]