Originally posted by BigDoggProblemThat was a tough nut to crack. Black has only one spare move, which must be a queen move, allowing the h-rook to pass to b8. The white knight must make a detour towards g1, to avoid checking black. And the white d-pawn must lose a tempo for two reasons: to get the number of moves correct, and to avoid arriving at d7 before the e7 square is available for the black king.
[fen]rrn5/p3nppp/1pp1pk2/5bb1/8/8/PPPqPPPP/R1BQKBNR w KQ - 0 16[/fen]
PG in 15.0 moves
(position after Black's 15th; find the gamescore)
1.Nf3 c6
2.Ne5 Qa5
3.Nxd7 Nxd7
4.Nc3 Nb6
5.d3 Bf5
6.d4 e6
7.d5 Be7
8.d6 Bg5
9.d7+ Ke7
10.d8=R Kf6
11.Rd2 Ne7
12.Nb5 Rhb8
13.Nd4 Nbc8
14.Nf3 b6
15.Ng1 Qxd2+
Originally posted by Mephisto2Interesting synopsis. The composer would say that the King is on f6 to eliminate the other 4-move N paths from c3 to g1.
That was a tough nut to crack. Black has only one spare move, which must be a queen move, allowing the h-rook to pass to b8. The white knight must make a detour towards g1, to avoid checking black. And the white d-pawn must lose a tempo for two reasons: to get the number of moves correct, and to avoid arriving at d7 before the e7 square is available for th ...[text shortened]...
8.d6 Bg5
9.d7+ Ke7
10.d8=R Kf6
11.Rd2 Ne7
12.Nb5 Rhb8
13.Nd4 Nbc8
14.Nf3 b6
15.Ng1 Qxd2+