Louis Paulsen
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Louis Paulsen (1833–1891) was a German chess player. In 1860s and 1870s, he was among the top five players in the world.
Paulsen was one of the first players to challenge the notion that an attack could be constructed out of brilliance. He put forward the idea that any brilliant attack would have failed against correct defence. His ideas were grasped by Steinitz,who declared that attack and defence have equal status, and particularly by Nimzowitsch, who listed Paulsen among his six greatest "purely defensive players".
[edit] Paulsen Pawns
Paulsen pawns is a term coined by Nimzowitsch for a restricted pawn centre with two pawns on squares d6 and e6 for Black or d3 and e3 for White, often coupled with an open c-file. This restricted centre makes it difficult for the opponent to whip up a quick attack by advancing his centre. Paulsen pawns are the stalwart of the Paulsen variation of the Sicilian Defence.
[edit] Paulsen attack in the Scotch opening
The move Bb5 in the Scotch Game is associated with Paulsen's name, as the Paulsen attack: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bb5
