[Retros] 4 related pj's

[Goran Wicklund]

L2->L3 in 15.5:

r3k1nr/ppp1ppBp/6p1/8/6QK/PPPPPPPP/4bq2/R1b2BnR
+---+---+---+---+---+---+---+---+

|*R | . |   | . |*K | . |*N |*R |

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

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

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

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

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

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

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

|   | . |   | . |   | . | Q | K |

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

| P | P | P | P | P | P | P | P |

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

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

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

| R |   |*B |   | . | B |*N | R |

+---+---+---+---+---+---+---+---+
 14 + 15  SPG 15.5
 
 
 
 Solution (not yet C+):
 
 1. Nb1-c3   Pd7-d5     2. Nc3xd5   Qd8-d5
 3. Pa2-a3   Qd5-a2     4. Pb2-b3   Pg7-g6     5. Bc1-b2   Bf8-h6
 6. Bb2-g7   Bc8-f5     7. Pc2-c3   Bf5-c2     8. Pd2-d3   Bh6-c1
 9. Pe2-e3   Nb8-c6    10. Qd1-g4   Nc6-d4    11. Pf2-f3   Nd4-e2
12. Ke1-f2   Ne2-g1    13. Kf2-g3   Bc2-d1    14. Kg3-h4   Qa2-f2+
15. Pg2-g3   Bd1-e2    16. Ph2-h3


I think Nicolas' SPG 16.5 also can be made 15.5 by capture the
white knight on d5 instead of moving it to b6.

Göran Wicklund