MESON Chess Problem Database

Problem Display
PID: 167110 (3B4/5p2/7K/4Q3/6k1/8/4b1p1/8 w - - 0 1)

Lincoln, Robert A

Sachmatija, 2010

3B4/5p2/7K/4Q3/6k1/8/4b1p1/8

#2

3 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4+?
      • 1...Kh3
        • 2.Qh4#
      • 1...Kxf4!
    • 1.Qe4+?
      • 1...Kh3
        • 2.Qh4#
      • 1...Kg3!
    • 1.Qg5+?
      • 1...Kh3
        • 2.Qh4#
      • 1...Kf3!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Qh5#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kh4
        • 2.Qg3#
      • 1...f5
        • 2.Qg3#

FEATURES

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