7th Winterthur 
Combinations from the Winterthur Chess Week 2006
We present you a series of six positions that arised in the previous Chess Week. In each of them a combinational chance was seized or missed. It is your task to find these tactical ideas!
The solutions to the excercises.
Position 1:
FM Hansruedi Glauser — WGM Anna Zozulia
How could black win this position immediately (this oppurtunity went unnoticed and the game eventually ended in a draw)?
Position 2:
WGM Alyona Goreskul — Urs Leuenberger
Here, the Ukrainian grandmaster Alyona Goreskul found a beautiful combination. Do you spot it too?
Position 3:
Reto Wyss — Norbert Barz
On his last move, white allowed the black fork 15. ...Nd5xc3 with the idea of sacrificing his bishop with 16.Bc4xf7+. Comment on the game, that went 16. ...Kg8xf7 17. Qe2-c4+ Nc3-d5 18. Nf3-g5+ Kf7-f6 19. Nd2-e4+ (1-0) and find an improvement for black.
Position 4:
Andreas Lehmann — GM Vadim Malakhatko
White just moved 21. Bb2-e5 and suprisingly resigned on seeing his opponent's reply. Do you see the reason for Lehmann's sudden resignation?
In "John Nunn's Chess Puzzle Book" you can find the unconventional, but very entertaining chapter "Find the wrong move". In it, Nunn presents several games where quite strong grandmasters blundered severely when in a seemingly standard position they choose the apparent standard move — only to resign immediately after they saw their opponent's response. The question Nunn asks is the following: Find the wrong move! By working through excercises of this type you can sharpen your awareness of dangers and improve your tactial abilities.
Here are two excercises of this genre taken from the Winterthur Chess Week 2006.
Position 5:
Zoltan Zambo — IM Branko Filipovic
Find the wrong move for white!
Position 6:
WGM Alyona Goreskul — Paul Remensberger
Find the wrong move for black!
