MESON Chess Problem Database

Problem Display
PID: 1098 (8/Q7/8/6N1/7B/2P1N1r1/5k1p/3K3n w - - 0 1)

Barbier, Georges Emile

The Westminster Papers, 1873

8/Q7/8/6N1/7B/2P1N1r1/5k1p/3K3n

#2

6 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • 1...Kg1
        • 2.Ke2#
      • 1...Kxe3!
    • 1.Qa2+?
      • 1...Kxe3
        • 2.Qd2#
      • 1...Kg1!
    • 1.Qa4?
      • 1...Kxe3
        • 2.Qd4#
      • 1...Kg1!
    • 1.Qa6?
      • 1...Kg1
        • 2.Qf1#
      • 1...Kxe3!
    • 1.Qd7?
      • 1...Kxe3
        • 2.Qd2#
        • 2.Qd4#
      • 1...Kg1!
    • 1.Qf7+?
      • 1...Kg1
        • 2.Qf1#
      • 1...Kxe3!
  • Keys
    • 1.Qg7!
      • 1...Kg1
        • 2.Sh3#
      • 1...Kxe3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(b);N_SPINR(d),S_FLIGHT::QAR(F)+K(A)
      • Refutation
        • K(b);N_SPINR(d),S_FLIGHT,XS(C)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);N_SPINR(d),S_FLIGHT,XS(C)::QAB1(F)
      • Refutation
        • K(b);N_SPINR(d),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);N_SPINR(d),OGATEB,S_FLIGHT,XS(C)::QAB1(F)
      • Refutation
        • K(b);N_SPINR(d),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);N_SPINR(d),S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);N_SPINR(d),S_FLIGHT,XS(C)
    • Try
      • Q(F);
      • Refutation
        • K(b);N_SPINR(d),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);N_SPINR(d),OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);N_SPINR(d),S_FLIGHT,XS(C)
  • Actual
    • Q(F);
    • Vars
      • K(b);N_SPINR(d),S_FLIGHT::S(E)
      • K(b);N_SPINR(d),OGATEB,S_FLIGHT,XS(C)::QAB1(F)
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