[Retros] Die Schwalbe Heft 234, Nov-Dec 2008

[Joost de Heer]

> 13940 - Arno Tüngler

> A: ss1b4/p3P3/2PrRr2/ssrkBRP1/1Kb2q2/P2PrP2/1r6/1Bs3b1 (11+16)

 > B: ss6/4P3/2PrRr2/2rkBRP1/1Kb2q2/P2PrP2/1r6/1Bs3b1 (11+12)

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+ 

> |*S |*S |   |*B |   | . |   | . | |*S |*S |   | . |   | . |   | . | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+ 

> |*P |   | . |   | P |   | . |   | | . |   | . |   | P |   | . |   | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+

> |   | . | P |*R | R |*R |   | . | |   | . | P |*R | R |*R |   | . | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+ 

> |*S |*S |*R |*K | B | R | P |   | | . |   |*R |*K | B | R | P |   | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+

> |   | K |*B | . |   |*Q |   | . | |   | K |*B | . |   |*Q |   | . | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+

> | P |   | . | P |*R | P | . |   | | P |   | . | P |*R | P | . |   | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+

> |   |*R |   | . |   | . |   | . | |   |*R |   | . |   | . |   | . | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+

> | . | B |*S |   | . |   |*B |   | | . | B |*S |   | . |   |*B |   | 

> +---+---+---+---+---+---+---+---+ +---+---+---+---+---+---+---+---+ 

> ser-A->B 320


The correct position of B is:
ss6/4P3/2PrRr2/KBrk1RP1/P1bB1q2/3PrP2/1r6/2s3b1 (11+12)
+---+---+---+---+---+---+---+---+

|*S |*S |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | P |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . | P |*R | R |*R |   | . |

+---+---+---+---+---+---+---+---+

| K | B |*R |*K | . | R | P |   |

+---+---+---+---+---+---+---+---+

| P | . |*B | B |   |*Q |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . | P |*R | P | . |   |

+---+---+---+---+---+---+---+---+

|   |*R |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   |*S |   | . |   |*B |   |

+---+---+---+---+---+---+---+---+


>> 13941 - Thierry le Gleuher 

>> k4b1s/pppRpp1b/3p2p1/5pK1/5P1S/3P1P1B/PPP2PPB/4Sr2 (14+13) #1

>> (Who?)



> Is it assumed that the 50 move rule is automatically used?


Yes, if white can prove that, if black claims to have the move, at least
100 halfmoves without capture, pawn move or castling have occurred, the
position is a draw, and black can't mate. The same for black if white
claims to have the move.