MESON Chess Problem Database

Problem Display
PID: 104635 (KB6/8/8/7B/7N/3PR2p/4PkrP/2Q3b1 w - - 0 1)

Velimirovic, Milan

Vecherni Novosti, 1978

KB6/8/8/7B/7N/3PR2p/4PkrP/2Q3b1

#2

9 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Bg3#
    • 1...Rg3
      • 2.Bxg3#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Ba7#
      • 1...Rxh2
        • 2.Qxg1#
      • 1...Rxg3
        • 2.Bxg3#
      • 1...Bxh2!
    • 1.Qe1+?
      • 1...Kxe3
        • 2.Sf5#
      • 1...Kxe1!
    • 1.Qf1+?
      • 1...Kxe3
        • 2.Qf4#
      • 1...Kxf1!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Rg3#
        • 2.Rxh3#
        • 2.Re4#
        • 2.Re5#
        • 2.Re6#
        • 2.Re7#
        • 2.Re8#
      • 1...Rg8+
        • 2.Re8#
      • 1...Rxh2
        • 2.Rxh3#
      • 1...Bxh2
        • 2.Rxh3#
      • 1...Rg4
        • 2.Re4#
      • 1...Rg3
        • 2.Rxg3#
      • 1...Rg5
        • 2.Re5#
      • 1...Rg6
        • 2.Re6#
      • 1...Rg7
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,XP(C)::B(I)
    • R(c);N_GUARD::B(I),XR(c)
  • Tries
    • Try
      • R(E);
      • Threat
        • B(I)
      • Vars
        • R(c);N_GUARD,XP(C)::QAB1(A),XB(a)
        • R(c);OGATE,XR(E)::B(I),XR(c)
      • Refutation
        • B(a);XP(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(E)::S(F)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(E)::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • B(I);
    • Threat
      • DUALS(7)
    • Vars
      • R(c);CHECK::B(I)+R(E)
      • R(c);XP(C)::B(I)+R(E),XP(d)
      • B(a);XP(C)::B(I)+R(E),XP(d)
      • R(c);::B(I)+R(E)
      • R(c);::B(I)+R(E),XR(c)
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