MESON Chess Problem Database

Problem Display
PID: 252103 (b7/8/8/6Q1/3k4/7R/P3B3/4K3 w - - 0 1)

Zimmer, Eligiusz

Zadachi i Etyudi, 2004

b7/8/8/6Q1/3k4/7R/P3B3/4K3

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Rh4#
    • 1...Bd5
      • 2.Qe3#
  • Tries
    • 1.Rh4+?
      • 1...Kc3
        • 2.Qc1#
        • 2.Qd2#
      • 1...Be4!
    • 1.Rh5?
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qd2#
      • 1...Ke4
        • 2.Rh4#
        • 2.Qe5#
      • 1...Be4
        • 2.Qc5#
      • 1...Bd5!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Rh4#
      • 1...Kxc5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Rc4#
      • 1...Kxc3
        • 2.Qd2#
      • 1...Ke4
        • 2.Rc4#
      • 1...Bd5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P-FLIGHT,S_CUTB(b)::R(D)
    • B(b);SBLOCK::QAB1(E)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • R(D);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
        • B(b);SBLOCK::QAB1(E)
      • Refutation
        • B(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::R(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XR(D)::QAB1(E)
      • K(a);P-FLIGHT::R(D)
      • B(b);SBLOCK::QAB1(E)
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