MESON Chess Problem Database

Problem Display
PID: 108310 (8/8/7Q/3K4/4p3/8/6k1/4B2b w - - 0 1)

Froberg, Johan Hilding Laurentius

Springaren, 1988

8/8/7Q/3K4/4p3/8/6k1/4B2b

#2

3 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4?
      • 1...Kg1
        • 2.Qf2#
      • 1...Kh3
        • 2.Qg3#
      • 1...e3!
    • 1.Qh4?
      • 1...Kf1
        • 2.Qf2#
      • 1...Kg1
        • 2.Qf2#
      • 1...Kf3
        • 2.Qxe4#
      • 1...e3!
    • 1.Qg6+?
      • 1...Kh2
        • 2.Qg3#
      • 1...Kf3
        • 2.Qxe4#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kf1!
  • Keys
    • 1.Qe3!
      • 1...Kf1
        • 2.Qf2#
      • 1...Kh2
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
        • K(b);P-FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAB1(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAB1(C),XP(c)
        • K(b);S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);P-FLIGHT::QAB1(C)
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