MESON Chess Problem Database

Problem Display
PID: 214373 (8/3kB3/K4P1N/8/8/8/8/Q7 w - - 0 1)

Wheeler, Charles Henry

Chess Problems, 1880

8/3kB3/K4P1N/8/8/8/8/Q7

#2

5 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qa4#
  • Tries
    • 1.Kb7?
      • 1...Ke8
        • 2.Qa4#
      • 1...Ke6!
    • 1.Qb2?
      • 1...Kc6
        • 2.Qb7#
      • 1...Kc7
        • 2.Qb7#
      • 1...Kc8
        • 2.Qb7#
      • 1...Ke8
        • 2.Qb5#
      • 1...Ke6!
    • 1.Qc3?
      • 1...Ke8
        • 2.Qc6#
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc8
        • 2.Qd8#
      • 1...Ke8
        • 2.Qa4#
        • 2.Qd8#
      • 1...Kc7!
    • 1.Qe5?
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke8
        • 2.Qb5#
      • 1...Kc8!
    • 1.Qc1?
      • 1...Ke8
        • 2.Qc6#
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qd1+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc8
        • 2.Qd8#
      • 1...Ke8
        • 2.Qa4#
        • 2.Qd8#
      • 1...Kc7!
    • 1.Qh1?
      • 1...Kc7
        • 2.Qb7#
      • 1...Kc8
        • 2.Qb7#
      • 1...Ke8
        • 2.Qc6#
      • 1...Ke6!
    • 1.Qa5?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc8
        • 2.Qd8#
      • 1...Ke8
        • 2.Qd8#
        • 2.Qa4#
        • 2.Qb5#
      • 1...Kc6!
  • Keys
    • 1.Qb1!
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc7
        • 2.Qb7#
      • 1...Kc8
        • 2.Qb7#
      • 1...Ke8
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB(A)
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