The Retrograde Analysis Corner
No. 98, Apr. 2000 - SOLUTIONS
8036 - Tom Volet
The last moves were: -1. .. b7xPa6 -2. a5-a6 Rf8-c8 -3. a4-a5 Qe8-b8 -4. a3-a4 Qc6-e8 -5. a2-a3 Qg2-c6 -6. Qg1-f1. The position unlocks when white frees his queen, and uses her on e3 as a screen, so the black rook can go to f3 to break the mutual king-pin.
8037 - Gianni Donati
1. f3 e5 2. Kf2 Qh4 3. Ke3 Ke7 4. Qe1 Kf6 5. Qg3 Be7 6. Qf2 Kg5 7. Qe1 Qe4 8. Kf2 Kh4 9. Qd1 Bg5 10. Ke1 Bh6