MESON Chess Problem Database

Problem Display
PID: 47462 (8/8/3p1BB1/q2N1P2/4k3/n3P3/1N1p4/3Q3K w - - 0 1)

Lobusov, Andrey Jakovlevic

1st Prize, Neue Zurcher Zeitung, 1998-1999

8/8/3p1BB1/q2N1P2/4k3/n3P3/1N1p4/3Q3K

#2

8 + 5

56 The Problemist 2003
133 The Problemist Supplement 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Bh5?
      • threat
        • 2.Qf3#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Kxd5!
    • 1.Bf7?
      • threat
        • 2.Qg4#
      • 1...Kxf5
        • 2.Qf3#
      • 1...Qxd5!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Qf3#
      • 1...Qxd5
        • 2.Qg4#
      • 1...Qd8
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);S_FLIGHT,XP(F)::QAB1(A)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XS(E)
    • Try
      • B(H);
      • Threat
        • QAR2(A)
      • Vars
        • K(c);S_FLIGHT,XP(F)::QAR2(A)
      • Refutation
        • Q(d);XS(E)
  • Actual
    • B(G);
    • Threat
      • S(E)
    • Vars
      • K(c);S_FLIGHT,XS(E)::QAB(A)
      • Q(d);SBLOCK,XS(E)::QAR2(A)
      • Q(d);N_GUARD::S(E)
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