MESON Chess Problem Database

Problem Display
PID: 175419 (Q7/8/1R6/6K1/3kB3/3P4/8/8 w - - 0 1)

Spencer, George Burt

American Chess Magazine, 1899

Q7/8/1R6/6K1/3kB3/3P4/8/8

#2

5 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd5#
      • 2.Qa1#
      • 2.Qh8#
  • Tries
    • 1.Rb3?
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Ke3!
    • 1.Rc6?
      • 1...Ke5
        • 2.Qa1#
        • 2.Qh8#
      • 1...Ke3!
    • 1.Qc6?
      • 1...Ke5
        • 2.Qd5#
        • 2.Qc3#
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qf6#
      • 1...Ke3!
    • 1.Qa1+?
      • 1...Kc5
        • 2.Qg1#
      • 1...Ke3!
    • 1.Qa2?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Qd5#
        • 2.Qa1#
        • 2.Qb2#
      • 1...Ke3!
    • 1.Qa3?
      • 1...Ke5
        • 2.Qb2#
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qa1#
        • 2.Qc3#
      • 1...Ke3!
    • 1.Qc8?
      • 1...Ke5
        • 2.Qc3#
        • 2.Qc5#
        • 2.Qh8#
      • 1...Ke3!
  • Keys
    • 1.Rb2!
      • 1...Kc3
        • 2.Qh8#
      • 1...Ke3
        • 2.Qa7#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT::QAR1(E)
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