Two ways of unpinning white

Narayanan's Problem corner

Two ways of unpinning white

A white piece can be set at liberty by black but there can be two of this kind which hold their own charm in chess problems.A black line piece may unpin by withdrawal or in a more subtle way when another black man intervenes on the pinning line.Tshe former is known as Withdrawal or Direct unpin and the second is called Interference unpin. Unpins of white has been studied at depth in the early part of this century and task records in respect of unpin of each white piece have been set already which are yet to be surpassed.This theme can be combined with modern concepts with equal facility . I give below the masterpiece by Argentine grandmaster Arnoldo Ellerman which shows the maximum possible five-fold interference unpins of the white queen.

The banal key 1.e7 !! introduces the threat 2.e8 =Q.

The defences attack the a4-e8 diagonal with 1…f6/Ne5/Nd4/Rac2/Rdc2 which unpin the White Queen with resultant mates 2.Qc6/Qb3/Qc4/Qa3/Qxa5.Ellerman also equalled the task wih lateral unpin of the White Queen .

Mate in two moves

In the problem for solving you come across further refinement in unpin study by the same composer which combines the theme with cross-check.

Mate in two Moves

Mate in two moves

Solution to Deceptive self-pin problem 1.Nxe5

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Glossary

Symbol	Meaning
+	Check
#	Checkmate
x	Capture
!	Good Move
!!	Excellent Move
?	Bad move
??	Blunder
!?	Interesting Move
?!	Dubious Move
1-0	White Wins
0-1	Black Wins
1/2	Draw
Twoer	Mate in Two Moves

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About the author

C.G.S.Narayanan, an international composer of repute, has been composing Chess C G S Narayanan problems for the past thirty years. He has won several awards for his compositions in International composing tourneys and he has an output of over 300 problems to his credit. He is the second Indian to win the prestigious Brian Harley Award for the best two-mover composed by a subject of British Commonwealth twice in 1977 and 1991. He has been editing THE HINDU Chess problem column from 1982 onwards, after S.K.Narasimhan. He has captained the Indian team in the World Chess Compositions Tournaments held by FIDE.

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