The Retrograde Analysis Corner
No. 104, October 2001 - SOLUTIONS
8578 - Jensen
Last move was Ka2-b1.
8579 - Thomas Volet
Possible retro play: -1.f5xPg6 h7xNg6 -2.Nf4 Qa2 -3.Ne2 Qb1 -4.Nc3 Qc2; now bQ is extracted with wQ following, and bQ returns to a2: -13.Rb1 Qa1, and Black unpromotes and retracts his pawn to a4: -17.a3xQb4 Qa5 -18.Kb4 Qb6 -19.c4 Kd6 etc.
8580 - Gianni Donati
1.a4 b5 2.axb5 Ba6 3.Rxa6 Qc8! 4.Rg6 hxg6 5.Nh3 Rxh3 6.Rg1! Ra3 7.Rh1 Ra2 8.Na3 Qd8.
8581 - Henrik Juel
1.g3 e5 2.Lg2 e4 3.Kf1 e3 4.Bc6 dxc6 5.Kg2 Dd3 6.exd3 e2 7.Qf1 e1=Q 8.Ne2 Qxc1 9.Rg1 Qe1 10.Nc1 Qe7 11.Qd1 Qd8 12.Kf1 Bd6 13.Ke1 Bf4 14.gxf4 Bf5 15.Rg5 Be4 16.Rc5 Nf6 17.Rc3 c5 18.f5 Nc6.