[Retros] #11647 in Probleemblad

[Ryan M.]

Is is possible that there is an error in this diagram:

11647 - Alexander Zolotarev
3b2Bq/2pRSpSP/3p1KRQ/1p4s1/1p2pPkP/2P3pb/1P2PPp1/8 (14+13)
+---+---+---+---+---+---+---+---+

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

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

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

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

|   | . |   |*P |   | K | R | Q |

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

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

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

|   |*P |   | . |*P | P |*K | P |

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

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

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

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

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

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+
Can white deliver mate in 1?

The solution must be something like -1...b6-b5 2.e3xNf4 Ne6-f4 3.Nh5-g7
Ng7-e6+ 4.Nf4-h5 b7-b6 5.Ne6-f4 Nf3-g5 6.Ng5-e6+ Nd4-f3 7.c2-c3 Nc6-d4
8.Nc8-e7 Ne7-c6+ 9.Nb6-c8 b5-b4 10.Na8-b6 b6-b5 11.a7-a8N e5-e4 12.a6-a7
a7xBb6 13.Ba5-b6 e6-e5 14.Bd2-a5 and black is stuck, but if he had one more
tempo (say, Pb4 should be on b3 in the diagram), then white would have time
for Bc1-d2 thus permitting ...Kf4-g4, d2xRe3, etc.

-Ryan McCracken