MESON Chess Problem Database

Problem Display
PID: 187864 (7b/8/8/2Q5/2B1k2P/6P1/8/7K w - - 0 1)

Decker, Adolfph L

Source?, 1910

7b/8/8/2Q5/2B1k2P/6P1/8/7K

#2

5 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Be5!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kxe3!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qf4#
      • 1...Ke3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kf5
        • 2.Qe6#
      • 1...Be5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • B(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(a);P-FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • B(b);SBLOCK::QAB1(E)
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