MESON Chess Problem Database

Problem Display
PID: 208795 (7Q/8/1N6/3p2BB/4k3/8/1K6/8 w - - 0 1)

Fleischmann, Bianca

Detroit Free Press, 1876

7Q/8/1N6/3p2BB/4k3/8/1K6/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bf3+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf5
        • 2.Qf6#
      • 1...Kxf3!
    • 1.Qd4+?
      • 1...Kf5
        • 2.Qxd5#
      • 1...Kxd4!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Be2#
        • 2.Bg6#
        • 2.Qe3#
        • 2.Qxd5#
      • 1...Kxe5!
    • 1.Qd8?
      • threat
        • 2.Qxd5#
      • 1...Kd3
        • 2.Qxd5#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Kf5
        • 2.Qxd5#
      • 1...d4!
    • 1.Qe8+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kf5!
    • 1.Qg8?
      • threat
        • 2.Qxd5#
      • 1...Kd3
        • 2.Qxd5#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Kf5
        • 2.Qxd5#
      • 1...d4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxd5#
      • 1...Kd3
        • 2.Qxd5#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Kf5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XP(b)
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR2(E),XP(b)
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(E),XP(b)
        • K(a);P-FLIGHT::QAR1(E),XP(b)
        • K(a);S_FLIGHT::QAR2(E),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
        • K(a);OGATE,P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR2(E),XP(b)
        • K(a);P-FLIGHT::QAR1(E),XP(b)
      • Refutation
        • P(b);
  • Actual
    • Q(E);P_PINP(b)
    • Threat
      • QAB1(E),XP(b)
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAR2(E),XP(b)
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(E),XP(b)
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