The beginning is easy enough: 1.b6+ when 1...Kb8 loses to 2.g7, with the threat of g8=Q+. Things are more tricky, however, after 1...Ka8! since 2.g7 h1=Q 3.g8=Q+ Bb8 4.a7 Qa1+ gives Black at least a perpetual check.
That line, however, provides the idea for White's second move: 2.Re1! when after 2...Nxe1 3.g7 h1=Q 4.g8=Q+ Bb8 5.a7, the queen's road to a1 is blocked. Now 5...Nc4+ 6.Ka6 leaves Black unable to prevent mate, so he must play 5...Nc6+! when 6.Ka6 allows Qf1 mate. So White must accept the offer with 6.dxc6, but how to meet 6...Qxh5+? With 7.Ka6 met by 7...Qe2+, the wide open spaces offer White's king nowhere to hide.
This is where most solvers give up. The solution is quite astounding: 7.Qg5!! Qxg5+ 8.Ka6! For the price of a queen, hite has cut out the check on e2. Black's only defence to the threat of b7 mate is 8...Bxa7, when 9.c7!! wins. The threats of b7 mate and c8=Q+ cannot both be met. A brilliant finale.Reuse content