MESON Chess Problem Database

Problem Display
PID: 104683 (6B1/4N3/2r1q1QK/8/N1kP3R/8/8/1R6 w - - 0 1)

Zivkovic, Fedor

Archives Zivkovic, 1941

6B1/4N3/2r1q1QK/8/N1kP3R/8/8/1R6

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Bxd5#
    • 1...Qxg8
      • 2.d5#
    • 1...Rc5
      • 2.dxc5#
    • 1...Rc7
      • 2.Bxe6#
    • 1...Rc8
      • 2.Bxe6#
  • Tries
    • 1.Kh5?
      • threat
        • 2.Qc2#
      • 1...Qd5+
        • 2.Bxd5#
      • 1...Rc5+
        • 2.dxc5#
      • 1...Qf7!
    • 1.Sxc6?
      • threat
        • 2.Bxe6#
      • 1...Kd5
        • 2.Qxe6#
      • 1...Qd5
        • 2.Sa5#
        • 2.Se5#
        • 2.Rb4#
        • 2.Qc2#
      • 1...Qf7
        • 2.Bxf7#
      • 1...Qxg8!
    • 1.d5+?
      • 1...Qg4
        • 2.Rxg4#
      • 1...Qe4!
  • Keys
    • 1.Kg5!
      • threat
        • 2.Qc2#
      • 1...Qd5+
        • 2.Bxd5#
      • 1...Rc5+
        • 2.dxc5#
      • 1...Qxg8
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(c);OGATE::B(H),XQ(c)
    • Q(c);N_GUARD,N_SPINQ(c),XB(H)::R(D)+P(C)
    • R(b);OGATE::R(D)+P(C),XR(b)
    • R(b);N_GUARD::B(H),XQ(c)
  • Tries
    • Try
      • K(F);N_SPINQ(E),P-FLIGHT
      • Threat
        • QAR2(E)
      • Vars
        • Q(c);CHECK,OGATE::B(H),XQ(c)
        • R(b);CHECK,OGATE::R(D)+P(C),XR(b)
      • Refutation
        • Q(c);P_PINQ(E)
    • Try
      • S(G);XR(b)
      • Threat
        • B(H),XQ(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(E),XQ(c)
        • Q(c);N_PINQ(E),OGATEB::B(H),XQ(c)
      • Refutation
        • Q(c);N_PINQ(E),N_SPINQ(c),XB(H)
    • Try
      • P(C);CHECK,N_PINQ(c)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::R(D),XQ(c)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • K(F);N_SPINQ(E),S_FLIGHT
    • Threat
      • QAR2(E)
    • Vars
      • Q(c);CHECK,OGATE::B(H),XQ(c)
      • R(b);CHECK,OGATE::R(D)+P(C),XR(b)
      • Q(c);N_GUARD,N_SPINQ(c),P_PINQ(E),XB(H)::R(D)+P(C)
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