The competition started its season on April 23, 2005 and ended on November 26, 2005. The championship was organized by the national association CBF . At the end of the season, the Gremio Porto Alegre was able to celebrate the championship.
The competition was held in three phases. In the first round , the 22 clubs competed against each other in a group. A return leg was not planned. The best eight clubs moved on to the next round. The last six places in the table meant relegation to the Série C.
In the second round , the eight clubs met in two groups of four each. The encounters were decided in the return leg. The two group best moved into the final round. The group winner of the final round became champions. This and the runner-up rose to the first division in 2006 .
In the first round , the 21 clubs competed against each other in a group. A return leg was not planned. The best eight clubs moved on to the next round. The last last places in the table meant relegation to the Série C.
The final round was decided on the last group match day, November 26, 2005, with both finals taking place in Recife . Grêmio Porto Alegre would have been enough with a draw in the away game against Náutico Capibaribe . The Santa Cruz FC had their home match against Portuguesa win to become champions. Both managed a victory and Gremio became champion.
An incident occurred before the game started. Náutico fans locked Gremio's team in the locker room.
In the course of the game, the referee decided on a penalty for Náutico. In the course of this, the referee had to send three Gremio players off the field. Patrício and Nunes for aggressive behavior and Domingos for knocking the ball away. Marcel , who had been substituted 20 minutes earlier, tried to manipulate the penalty spot, for which he received the yellow card. The penalty could only be taken after 27 minutes. After a player Gremios had previously received a yellow-red card, the club could only continue the game with seven players. The penalty was saved by goalkeeper Gremios. From the resulting corner for Náutico, Gremio was able to start a counterattack, which led to the only goal and championship title. Gremio fans refer to the game as Batalha dos Aflitos (Battle of Aflitos). The story was filmed in 2007 under the title " Inacreditável - A Batalha dos Aflitos ".
The table was used to determine the placement of the individual teams in the season. At times it was used by the association to determine an eternal ranking list. It is made up of all the games played. In the sorting, reaching the respective final phase has priority over the points scored.