MESON Chess Problem Database

Problem Display
PID: 182239 (6k1/8/6P1/6P1/6Q1/6B1/6K1/8 w - - 0 1)

Spencer, George Burt

St. Paul's Dispatch, 1906

6k1/8/6P1/6P1/6Q1/6B1/6K1/8

#2

5 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3?
      • 1...Kh8
        • 2.Qf8#
      • 1...Kg7!
    • 1.Qf5?
      • 1...Kh8
        • 2.Qf8#
      • 1...Kg7!
    • 1.Qe6+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Be5#
      • 1...Kg7!
    • 1.Qb4?
      • 1...Kh8
        • 2.Qf8#
      • 1...Kg7!
    • 1.Qc4+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Be5#
      • 1...Kg7!
    • 1.Qf4?
      • 1...Kh8
        • 2.Qf8#
      • 1...Kg7!
  • Keys
    • 1.Qd7!
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qh7#

This anticipates 149372(1923), 119959(1924), 77626(1947), 46746(1967), 85855(1968), 158191(1968), 249383(1971), 219432(1977), 245161(1997), 71679(2006)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
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