MESON Chess Problem Database

Problem Display
PID: 145852 (B7/2p2Pn1/R4p1N/2pNkppR/8/2PPb3/1Q6/7K w - - 0 1)

Brankovic, Ljubomir

Die Schwalbe, 2012

B7/2p2Pn1/R4p1N/2pNkppR/8/2PPb3/1Q6/7K

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.c4#
    • 1...Se8
      • 2.fxe8Q#
      • 2.fxe8R#
    • 1...g4
      • 2.Sxg4#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sg6#
      • 1...Kf4
        • 2.Qh2#
      • 1...c6!
    • 1.Qb8?
      • threat
        • 2.Qxc7#
      • 1...Se8
        • 2.Qxe8#
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Se6!
    • 1.f8Q?
      • threat
        • 2.Sf7#
        • 2.Qxf6#
      • 1...Sxh5
        • 2.Sf7#
        • 2.Qe7#
        • 2.Qe8#
      • 1...Se8
        • 2.Sf7#
        • 2.Qe7#
        • 2.Qxe8#
      • 1...f4
        • 2.Qxf6#
      • 1...c6!
    • 1.f8S?
      • threat
        • 2.Sf7#
        • 2.Sg6#
        • 2.Sd7#
      • 1...f4
        • 2.Sg6#
        • 2.Sd7#
      • 1...c6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Qh2#
      • 1...Bxf4
        • 2.c4#
      • 1...gxf4
        • 2.Sg4#
      • 1...c6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB(B)+P(C)
    • S(h);OGATE::PXS(h)=Q
    • P(e);P_SPINP(d)::S(H),XP(e)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • P(g);
    • Try
      • Q(B);P_PINP(g)
      • Threat
        • QAB(B),XP(g)
      • Refutation
        • S(h);
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);P_SPINP(e)::QAB1(I),XP(f)
      • Refutation
        • P(g);
    • Try
      • P(I);
      • Threat
        • DUALS(3)
      • Refutation
        • P(g);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(B)
      • B(a);N_GUARD,SBLOCK,XS(E)::QAB(B)+P(C)
      • P(e);P_SPINP(d),SBLOCK,XS(E)::S(H)
      • P(g);OGATEB::QAB(B)
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