The Retrograde Analysis Corner
No. 88, Oct. 1997 - SOLUTIONS
7185 - Thomas Volet
Original wRa1 is on d8, and original wRh1 is on d1, having screened on g6. Original bRa8 was captured on a7, and original bRh8 is on f8; Black promoted h2-h1=R (now on g1) with bB screening on h3 or h5.
7186 - Henrik Juel
wPc3,d3,e3 and bPa2,b2,f2,g2,h2 never captured for a total of 8. The white captures were a2xb3, b3xa4, f2xg3xh4, g2xf3, h2xg3.
7187 - Henrik Juel
a) 1. Nc3 Nf6 2. Nd5 Ne4 3. Ne7 Nc3 4. Nc6 Qg5 5. Na7 Qb5 6.
Nb5 Ra3 7. Na3 Nb1 8. Nb1
b) 1. Nc3 a5 2. Nd5 a4 3. Ne7 Ra5 4. Ng8 Qe7 5. Ne7 Rd5 6. Nd5
a3 7. Nc3 ab2 8. Nb1