MESON Chess Problem Database

Problem Display
PID: 51081 (8/Q7/8/1RK4B/4N3/3k4/5PP1/8 w - - 0 1)

Gold, S?

Burnley Express, 1881

8/Q7/8/1RK4B/4N3/3k4/5PP1/8

#2

7 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Kb4?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Kc2!
    • 1.Kc6?
      • 1...Kc4
        • 2.Be2#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Kc2!
    • 1.Kd6?
      • 1...Kc4
        • 2.Be2#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Kc2!
    • 1.Qb8?
      • 1...Kxe4
        • 2.Bg6#
      • 1...Kc2!
    • 1.Qa1?
      • threat
        • 2.Qb1#
      • 1...Kc2
        • 2.Qc3#
        • 2.Qb1#
        • 2.Qd1#
      • 1...Kxe4!
    • 1.Qa3+?
      • 1...Kc2
        • 2.Qc3#
      • 1...Kxe4!
    • 1.Qa5?
      • 1...Kc2
        • 2.Qd2#
        • 2.Qc3#
      • 1...Kxe4!
    • 1.Qd7+?
      • 1...Kc2
        • 2.Qd1#
        • 2.Qd2#
      • 1...Kxe4!
    • 1.Qf7?
      • threat
        • 2.Qc4#
      • 1...Kc2
        • 2.Qc4#
      • 1...Kxe4!
    • 1.Qg7?
      • 1...Kc2
        • 2.Qc3#
      • 1...Kxe4!
  • Keys
    • 1.Qc7!
      • 1...Kc2
        • 2.Kd4#
      • 1...Kxe4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);S_FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);S_FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(G);
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(a);S_FLIGHT::QAR2(G)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAR(G)+K(E)
      • K(a);OGATEB,S_FLIGHT,XS(C)::B(F)
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