Arkadij Naiditsch Puzzles from Dortmund

The surprising tournament win for Arkadij Naiditsch at Dortmund inspires the following four puzzle positions from his decisive games (including the loss to Topalov). Puzzles are offered in order of difficulty. Solutions will follow. Or go look at the games online at the excellent Net Chess News website.

Topalov-Naiditsch, Dortmund 2005

White to play and win after 26...Raa7

Nielsen-Naiditsch, Dortmund 2005
Black to play and win after 56.Rb5

Naiditsch-Leko, Dortmund 2005

White to play and win after 53...Qa7


Naiditsch-Sutovsky, Dortmund 2005

White to play and win after 25...Qxa3