, Muskogee, OK

March 27, 2014

Skewer can cook opponent's goose

By Eric Morrow
Chess Corner

— This week’s position is from the Candidate’s Tournament in Russia. The winner plays reigning World Chess Champion Magnus Carlsen later this year for the title.

Two of the eight players in the tournament are Peter Svidler and Sergey Karjakin of Russia.

In this week’s position, Svidler has the white pieces and Karjakin the black pieces.

Karjakin’s next move forces a skewer and wins the game. With this hint in mind, please try to find Karjakin’s winning move.

A skewer in chess, as the cooking image suggests, is an attack upon two pieces along the same line.

The attack upon the first piece is direct. The attack upon the second piece is indirect and is revealed when the piece that is directly attacked moves out of danger. A good example is from this game.

Karjakin checked Svidler from e6 with his bishop. The white king must flee to either b5 or b4.

Regardless of whether the king moves to b5 or b4, the black queen checks from b3.

After the white king moves out of check, the black queen picks off the skewered white queen.

Svidler thus resigned after the bishop check from e6.

The tournament ends Sunday. Vishy Anand of India is in the lead.