._____._____._____._____.
 |     |     |     |     |
 ._____._____._____._____.
 |     |   1 |     |     |
 ._____._____._____._____.
 |     |     |     |     |
 ._____._____._____._____.
Fracaso para un tablero de   3 x   4, inicio en (  2,  2)