"Statt dessen tut er den ganz unglauben Fehlzug, der Dame kostet." (Instead of this, he makes a completely unbelievable bad move, costing the Queen.)

Perhaps the knowledge that he had won the tournament regardless of the outcome of this game, put Paulsen in a frame of mind that was not conducive to preventing blunders.

Paulsen won this tournament with a score of 9/11. Anderssen and Zukertort, winning their last round games, finished 2nd & 3rd with 8.5/11.

Anderssen then beat Zukertort in a 1 game playoff for 2nd place.

Next Anderssen and Paulsen played a match, with Paulsen winning by a score of +5, -3, =1.

I note you are showing that Anderssen won this 3rd and last match with L. Paulsen. Paulsen actually won by the score you indicate.

One additional game would make this Leipzig 1877 collection complete. It is the consultation game played on July 22 between L. Paulsen, Dr C. Goring & J. Metger (White) vs A. Anderssen, J.H. Zukertort & Dr. C. Schmid (Black). Anderssen was on the winning side, as Black won this game in 63 moves. This game is also in the tournament book.

As you have noted earlier, they certainly played a lot of chess in a short amount of time at Leipzig 1877.

The 11 round tournament started on July 16th and was completed on the 21st. The consultation game was played on July 22nd. Then the Zukertort -Anderssen playoff game on the 23rd and finally the 9 game Anderssen - Paulsen match was played July 23rd to the 28th. A total of 22 games for the oldest competitor, Adolph Anderssen!

In 1878, Anderssen and L. Paulsen met for the last time in the 1878 Frankfurt tournament. Considering his tournament wins at Leipzig 1877 and Frankfurt 1878, it is too bad that Paulsen could not also have entered the great Paris tournament of 1878.

Anderssen completed his last game at Paris on July 23rd and then had to get to Frankfurt for the first round on the 27th.