| 1st round — 22nd May 1981 |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2535 |
 |
GM Mikhalchishin, Adrian |
| IM Fernández González, Juan Carlos |
 |
2440 |
½ - ½ |
2370 |
 |
Andrés Méndez, Miguel |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
½ - ½ |
2435 |
 |
GM García Martínez, Silvino |
| GM Tseshkovsky, Vitaly |
 |
2530 |
1 - 0 |
2520 |
 |
GM García Gonzáles, Guillermo |
| IM Vera González, Reynaldo |
 |
2455 |
0 - 1 |
2410 |
 |
GM Bárczay, László |
| IM Vilela de Acuña, José Luis |
 |
2430 |
½ - ½ |
2390 |
 |
GM Hernández Onna, Román |
| IM Zapata Ramírez, Alonso |
 |
2420 |
0 - 1 |
2470 |
 |
IM Chernin, Alexander |
| 1.-3. Tseshkovsky, Chernin, Bárczay 1; 4.-11. Mikhalchishin, Nogueiras Santiago, Bönsch, Hernández Onna, García Martínez, Fernández González, Vilela de Acuña, Andrés Méndez ½; 12.-14. García Gonzáles, Vera González, Zapata Ramírez 0; |
| 2nd round — 23rd May 1981 |
| Andrés Méndez, Miguel |
 |
2370 |
½ - ½ |
2420 |
 |
IM Zapata Ramírez, Alonso |
| GM Bárczay, László |
 |
2410 |
0 - 1 |
2455 |
 |
IM Bönsch, Uwe |
| GM García Gonzáles, Guillermo |
 |
2520 |
0 - 1 |
2455 |
 |
GM Nogueiras Santiago, Jesús |
| GM García Martínez, Silvino |
 |
2435 |
½ - ½ |
2455 |
 |
IM Vera González, Reynaldo |
| GM Hernández Onna, Román |
 |
2390 |
0 - 1 |
2470 |
 |
IM Chernin, Alexander |
| GM Mikhalchishin, Adrian |
 |
2535 |
0 - 1 |
2440 |
 |
IM Fernández González, Juan Carlos |
| IM Vilela de Acuña, José Luis |
 |
2430 |
½ - ½ |
2530 |
 |
GM Tseshkovsky, Vitaly |
| 1. Chernin 2; 2.-5. Tseshkovsky, Nogueiras Santiago, Bönsch, Fernández González 1½; 6.-9. Bárczay, García Martínez, Vilela de Acuña, Andrés Méndez 1; 10.-13. Mikhalchishin, Vera González, Hernández Onna, Zapata Ramírez ½; 14. García Gonzáles 0; |
| 3rd round — 24th May 1981 |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2435 |
 |
GM García Martínez, Silvino |
| IM Chernin, Alexander |
 |
2470 |
1 - 0 |
2370 |
 |
Andrés Méndez, Miguel |
| IM Fernández González, Juan Carlos |
 |
2440 |
½ - ½ |
2410 |
 |
GM Bárczay, László |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
½ - ½ |
2430 |
 |
IM Vilela de Acuña, José Luis |
| GM Tseshkovsky, Vitaly |
 |
2530 |
1 - 0 |
2390 |
 |
GM Hernández Onna, Román |
| IM Vera González, Reynaldo |
 |
2455 |
1 - 0 |
2520 |
 |
GM García Gonzáles, Guillermo |
| IM Zapata Ramírez, Alonso |
 |
2420 |
0 - 1 |
2535 |
 |
GM Mikhalchishin, Adrian |
| 1. Chernin 3; 2. Tseshkovsky 2½; 3.-5. Nogueiras Santiago, Bönsch, Fernández González 2; 6.-10. Mikhalchishin, Bárczay, Vera González, García Martínez, Vilela de Acuña 1½; 11. Andrés Méndez 1; 12.-13. Hernández Onna, Zapata Ramírez ½; 14. García Gonzáles 0; |
| 4th round — 25th May 1981 |
| GM Bárczay, László |
 |
2410 |
½ - ½ |
2420 |
 |
IM Zapata Ramírez, Alonso |
| GM García Gonzáles, Guillermo |
 |
2520 |
1 - 0 |
2455 |
 |
IM Bönsch, Uwe |
| GM García Martínez, Silvino |
 |
2435 |
½ - ½ |
2440 |
 |
IM Fernández González, Juan Carlos |
| GM Hernández Onna, Román |
 |
2390 |
1 - 0 |
2370 |
 |
Andrés Méndez, Miguel |
| GM Mikhalchishin, Adrian |
 |
2535 |
1 - 0 |
2470 |
 |
IM Chernin, Alexander |
| GM Tseshkovsky, Vitaly |
 |
2530 |
1 - 0 |
2455 |
 |
GM Nogueiras Santiago, Jesús |
| IM Vilela de Acuña, José Luis |
 |
2430 |
½ - ½ |
2455 |
 |
IM Vera González, Reynaldo |
| 1. Tseshkovsky 3½; 2. Chernin 3; 3.-4. Mikhalchishin, Fernández González 2½; 5.-10. Nogueiras Santiago, Bárczay, Bönsch, Vera González, García Martínez, Vilela de Acuña 2; 11. Hernández Onna 1½; 12.-14. García Gonzáles, Zapata Ramírez, Andrés Méndez 1; |
| 5th round — 28th May 1981 |
| Andrés Méndez, Miguel |
 |
2370 |
½ - ½ |
2535 |
 |
GM Mikhalchishin, Adrian |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2430 |
 |
IM Vilela de Acuña, José Luis |
| IM Chernin, Alexander |
 |
2470 |
1 - 0 |
2410 |
 |
GM Bárczay, László |
| IM Fernández González, Juan Carlos |
 |
2440 |
½ - ½ |
2520 |
 |
GM García Gonzáles, Guillermo |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
½ - ½ |
2390 |
 |
GM Hernández Onna, Román |
| IM Vera González, Reynaldo |
 |
2455 |
½ - ½ |
2530 |
 |
GM Tseshkovsky, Vitaly |
| IM Zapata Ramírez, Alonso |
 |
2420 |
0 - 1 |
2435 |
 |
GM García Martínez, Silvino |
| 1.-2. Tseshkovsky, Chernin 4; 3.-5. Mikhalchishin, García Martínez, Fernández González 3; 6.-9. Nogueiras Santiago, Bönsch, Vera González, Vilela de Acuña 2½; 10.-11. Bárczay, Hernández Onna 2; 12.-13. García Gonzáles, Andrés Méndez 1½; 14. Zapata Ramírez 1; |
| 6th round — 29th May 1981 |
| GM Bárczay, László |
 |
2410 |
1 - 0 |
2370 |
 |
Andrés Méndez, Miguel |
| GM García Gonzáles, Guillermo |
 |
2520 |
1 - 0 |
2420 |
 |
IM Zapata Ramírez, Alonso |
| GM García Martínez, Silvino |
 |
2435 |
½ - ½ |
2470 |
 |
IM Chernin, Alexander |
| GM Hernández Onna, Román |
 |
2390 |
½ - ½ |
2535 |
 |
GM Mikhalchishin, Adrian |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
1 - 0 |
2455 |
 |
IM Vera González, Reynaldo |
| GM Tseshkovsky, Vitaly |
 |
2530 |
1 - 0 |
2455 |
 |
IM Bönsch, Uwe |
| IM Vilela de Acuña, José Luis |
 |
2430 |
½ - ½ |
2440 |
 |
IM Fernández González, Juan Carlos |
| 1. Tseshkovsky 5; 2. Chernin 4½; 3.-6. Mikhalchishin, Nogueiras Santiago, García Martínez, Fernández González 3½; 7.-8. Bárczay, Vilela de Acuña 3; 9.-12. García Gonzáles, Bönsch, Vera González, Hernández Onna 2½; 13. Andrés Méndez 1½; 14. Zapata Ramírez 1; |
| 7th round — 30th May 1981 |
| Andrés Méndez, Miguel |
 |
2370 |
½ - ½ |
2435 |
 |
GM García Martínez, Silvino |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2455 |
 |
GM Nogueiras Santiago, Jesús |
| IM Chernin, Alexander |
 |
2470 |
½ - ½ |
2520 |
 |
GM García Gonzáles, Guillermo |
| IM Fernández González, Juan Carlos |
 |
2440 |
0 - 1 |
2530 |
 |
GM Tseshkovsky, Vitaly |
| GM Mikhalchishin, Adrian |
 |
2535 |
1 - 0 |
2410 |
 |
GM Bárczay, László |
| IM Vera González, Reynaldo |
 |
2455 |
½ - ½ |
2390 |
 |
GM Hernández Onna, Román |
| IM Zapata Ramírez, Alonso |
 |
2420 |
½ - ½ |
2430 |
 |
IM Vilela de Acuña, José Luis |
| 1. Tseshkovsky 6; 2. Chernin 5; 3. Mikhalchishin 4½; 4.-5. Nogueiras Santiago, García Martínez 4; 6.-7. Fernández González, Vilela de Acuña 3½; 8.-12. García Gonzáles, Bárczay, Bönsch, Vera González, Hernández Onna 3; 13. Andrés Méndez 2; 14. Zapata Ramírez 1½; |
| 8th round — 31st May 1981 |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2455 |
 |
IM Vera González, Reynaldo |
| GM García Gonzáles, Guillermo |
 |
2520 |
1 - 0 |
2370 |
 |
Andrés Méndez, Miguel |
| GM García Martínez, Silvino |
 |
2435 |
½ - ½ |
2535 |
 |
GM Mikhalchishin, Adrian |
| GM Hernández Onna, Román |
 |
2390 |
½ - ½ |
2410 |
 |
GM Bárczay, László |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
1 - 0 |
2440 |
 |
IM Fernández González, Juan Carlos |
| GM Tseshkovsky, Vitaly |
 |
2530 |
0 - 1 |
2420 |
 |
IM Zapata Ramírez, Alonso |
| IM Vilela de Acuña, José Luis |
 |
2430 |
0 - 1 |
2470 |
 |
IM Chernin, Alexander |
| 1.-2. Tseshkovsky, Chernin 6; 3.-4. Mikhalchishin, Nogueiras Santiago 5; 5. García Martínez 4½; 6. García Gonzáles 4; 7.-12. Bárczay, Bönsch, Vera González, Hernández Onna, Fernández González, Vilela de Acuña 3½; 13. Zapata Ramírez 2½; 14. Andrés Méndez 2; |
| 9th round — 3rd June 1981 |
| GM Bárczay, László |
 |
2410 |
½ - ½ |
2435 |
 |
GM García Martínez, Silvino |
| IM Bönsch, Uwe |
 |
2455 |
1 - 0 |
2390 |
 |
GM Hernández Onna, Román |
| IM Chernin, Alexander |
 |
2470 |
½ - ½ |
2530 |
 |
GM Tseshkovsky, Vitaly |
| GM Mikhalchishin, Adrian |
 |
2535 |
½ - ½ |
2520 |
 |
GM García Gonzáles, Guillermo |
| IM Vera González, Reynaldo |
 |
2455 |
½ - ½ |
2440 |
 |
IM Fernández González, Juan Carlos |
| IM Vilela de Acuña, José Luis |
 |
2430 |
½ - ½ |
2370 |
 |
Andrés Méndez, Miguel |
| IM Zapata Ramírez, Alonso |
 |
2420 |
1 - 0 |
2455 |
 |
GM Nogueiras Santiago, Jesús |
| 1.-2. Tseshkovsky, Chernin 6½; 3. Mikhalchishin 5½; 4.-5. Nogueiras Santiago, García Martínez 5; 6.-7. García Gonzáles, Bönsch 4½; 8.-11. Bárczay, Vera González, Fernández González, Vilela de Acuña 4; 12.-13. Hernández Onna, Zapata Ramírez 3½; 14. Andrés Méndez 2½; |
| 10th round — 4th June 1981 |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2440 |
 |
IM Fernández González, Juan Carlos |
| GM García Gonzáles, Guillermo |
 |
2520 |
½ - ½ |
2410 |
 |
GM Bárczay, László |
| GM Hernández Onna, Román |
 |
2390 |
1 - 0 |
2435 |
 |
GM García Martínez, Silvino |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
½ - ½ |
2470 |
 |
IM Chernin, Alexander |
| GM Tseshkovsky, Vitaly |
 |
2530 |
1 - 0 |
2370 |
 |
Andrés Méndez, Miguel |
| IM Vera González, Reynaldo |
 |
2455 |
1 - 0 |
2420 |
 |
IM Zapata Ramírez, Alonso |
| IM Vilela de Acuña, José Luis |
 |
2430 |
0 - 1 |
2535 |
 |
GM Mikhalchishin, Adrian |
| 1. Tseshkovsky 7½; 2. Chernin 7; 3. Mikhalchishin 6½; 4. Nogueiras Santiago 5½; 5.-8. García Gonzáles, Bönsch, Vera González, García Martínez 5; 9.-11. Bárczay, Hernández Onna, Fernández González 4½; 12. Vilela de Acuña 4; 13. Zapata Ramírez 3½; 14. Andrés Méndez 2½; |
| 11th round — 5th June 1981 |
| Andrés Méndez, Miguel |
 |
2370 |
0 - 1 |
2455 |
 |
GM Nogueiras Santiago, Jesús |
| GM Bárczay, László |
 |
2410 |
1 - 0 |
2430 |
 |
IM Vilela de Acuña, José Luis |
| IM Chernin, Alexander |
 |
2470 |
½ - ½ |
2455 |
 |
IM Vera González, Reynaldo |
| IM Fernández González, Juan Carlos |
 |
2440 |
½ - ½ |
2390 |
 |
GM Hernández Onna, Román |
| GM García Martínez, Silvino |
 |
2435 |
0 - 1 |
2520 |
 |
GM García Gonzáles, Guillermo |
| GM Mikhalchishin, Adrian |
 |
2535 |
1 - 0 |
2530 |
 |
GM Tseshkovsky, Vitaly |
| IM Zapata Ramírez, Alonso |
 |
2420 |
1 - 0 |
2455 |
 |
IM Bönsch, Uwe |
| 1.-3. Tseshkovsky, Mikhalchishin, Chernin 7½; 4. Nogueiras Santiago 6½; 5. García Gonzáles 6; 6.-7. Bárczay, Vera González 5½; 8.-11. Bönsch, Hernández Onna, García Martínez, Fernández González 5; 12. Zapata Ramírez 4½; 13. Vilela de Acuña 4; 14. Andrés Méndez 2½; |
| 12th round — 6th June 1981 |
| IM Bönsch, Uwe |
 |
2455 |
½ - ½ |
2470 |
 |
IM Chernin, Alexander |
| IM Fernández González, Juan Carlos |
 |
2440 |
½ - ½ |
2420 |
 |
IM Zapata Ramírez, Alonso |
| GM Hernández Onna, Román |
 |
2390 |
½ - ½ |
2520 |
 |
GM García Gonzáles, Guillermo |
| GM Nogueiras Santiago, Jesús |
 |
2455 |
½ - ½ |
2535 |
 |
GM Mikhalchishin, Adrian |
| GM Tseshkovsky, Vitaly |
 |
2530 |
1 - 0 |
2410 |
 |
GM Bárczay, László |
| IM Vera González, Reynaldo |
 |
2455 |
½ - ½ |
2370 |
 |
Andrés Méndez, Miguel |
| IM Vilela de Acuña, José Luis |
 |
2430 |
½ - ½ |
2435 |
 |
GM García Martínez, Silvino |
| 1. Tseshkovsky 8½; 2.-3. Mikhalchishin, Chernin 8; 4. Nogueiras Santiago 7; 5. García Gonzáles 6½; 6. Vera González 6; 7.-11. Bárczay, Bönsch, Hernández Onna, García Martínez, Fernández González 5½; 12. Zapata Ramírez 5; 13. Vilela de Acuña 4½; 14. Andrés Méndez 3; |
| 13th round — 9th June 1981 |
| Andrés Méndez, Miguel |
 |
2370 |
½ - ½ |
2455 |
 |
IM Bönsch, Uwe |
| GM Bárczay, László |
 |
2410 |
½ - ½ |
2455 |
 |
GM Nogueiras Santiago, Jesús |
| IM Chernin, Alexander |
 |
2470 |
1 - 0 |
2440 |
 |
IM Fernández González, Juan Carlos |
| GM García Gonzáles, Guillermo |
 |
2520 |
½ - ½ |
2430 |
 |
IM Vilela de Acuña, José Luis |
| GM García Martínez, Silvino |
 |
2435 |
0 - 1 |
2530 |
 |
GM Tseshkovsky, Vitaly |
| GM Mikhalchishin, Adrian |
 |
2535 |
1 - 0 |
2455 |
 |
IM Vera González, Reynaldo |
| IM Zapata Ramírez, Alonso |
 |
2420 |
½ - ½ |
2390 |
 |
GM Hernández Onna, Román |
| 1. Tseshkovsky 9½; 2.-3. Mikhalchishin, Chernin 9; 4. Nogueiras Santiago 7½; 5. García Gonzáles 7; 6.-9. Bárczay, Bönsch, Vera González, Hernández Onna 6; 10.-12. García Martínez, Fernández González, Zapata Ramírez 5½; 13. Vilela de Acuña 5; 14. Andrés Méndez 3½; |