No. 170, April 1998
9985 - Leonid Borodatow Die Schwalbe Heft 170, 04/1998
15+8. Mate in 4 (RV)
11+14. May Black castle?
11+14. Least number of queen moves?
13+13. Release the position (b) wPc6 -> c5
14+15. Proof game in 12.0 moves
11+14. We know that (1) Bl. has the move, (2) Wh. may castle, (3) no bl. P was captured, and (4) Bl. last move was Nd2xBf1. Tell which Wh. unit moved last !