Author: Roy Eassa
Date: 10:48:12 04/24/02
Does ANY program see the whole line (3 underpromotions) up front?
[d] 1b6/4P3/1P2PN2/8/8/P1k5/P1p2P2/K5B1 w - - 0 1
1.Ne4+
[1.Nd5+? Kd2 2.Kb2 c1Q+ 3.Kb3 Bd6! 4.Nb4 Bxe7 5.b7 Qc7 -+]
1...Kd3 2.Nc5+
[2.Kb2? Be5+ and Black mates]
2...Kc3 3.Nb3 Be5 4.f4! forced
[4.Bh2? Bf6 5.e8N Bh8 and Black mates!]
4...Bf6 {or ...Bg7} 5.e8N! forced
5...Bh8 6.f5! forced
6...Be5 7.Bh2! forced
7...Bxh2 8.b7! forced
8...Be5! 9.b8B!
[9.b8Q? Kc4+ 10.Qxe5 c1Q+ 11.Nxc1 stalemate]
9...Bxb8 10.Nc7! forced
10...Bxc7 11.e7 forced
11...Be5 12.e8R!
[12.e8Q? Kc4+ 13.Qxe5 c1Q+ 14.Nxc1 stalemate]
12...Bg7 {or ...Bf6}
13.Re6 followed by f6
Problem attributed to Mark Libiurkin, circa 1933.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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