MESON Chess Problem Database

Problem Display
PID: 214810 (7Q/4N2K/4k3/8/6p1/6B1/8/2R5 w - - 0 1)

Brown, William

St. Louis Globe Democrat, 1877

7Q/4N2K/4k3/8/6p1/6B1/8/2R5

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxf5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf7!
    • 1.Sg6?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf7!
    • 1.Re1+?
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf7!
  • Keys
    • 1.Sd5!
      • 1...Kxd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
        • K(b);S_FLIGHT,XS(C)::QAR1(E)
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT,XS(C)::QAR1(E)
      • K(b);S_FLIGHT::QAR1(E)
      • K(b);S_FLIGHT::QAB1(E)
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