Our first tournament 1981:

  Mark V MK III MK II  
Mark V X X 1 1 1 1 4
MK III 0 0 X X 1 1 2
MK II 0 0 0 0 X X 0

Here are two games from the tournament:

 

MK III - Mark V
1981


1.e4 e5 2.d4 exd4 3.Dxd4 Sc6 4.Dd5 Lb4+ 5.Sc3 Sf6 6.Df5 d5 7.Dg5 O-O 8.exd5 Sd4 9.Kd1 Lf5 10.Ld3 Dd7 11.Lxf5 Sxf5 12.a3 Sxd5 13.axb4 Sxc3+ 14.Ke1 Dd1#

0-1

Mark V - MK II
1981


1.e4 e5 2.Sf3 Sc6 3.Lc4 Lc5 4.O-O Sf6 5.d4 exd4 6.c3 dxc3 7.e5 cxb2 8.Lxb2 Sg4 9.Lxf7+ Kxf7 10.Dd5+ Ke7 11.Dxc5+ Ke6 12.Dc4+ Kf5 13.Df7+ Ke4 14.Sfd2+ Kd3 15.Dc4#

1-0