MESON Chess Problem Database

Problem Display
PID: 15885 (8/8/B3pp1B/2Q5/4k3/7K/8/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 1988

8/8/B3pp1B/2Q5/4k3/7K/8/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qe3#
  • Tries
    • 1.Kg4?
      • 1...e5
        • 2.Qc4#
      • 1...f5+!
    • 1.Bd3+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Kxd3!
    • 1.Bc4?
      • 1...Kf3
        • 2.Qe3#
      • 1...f5
        • 2.Qe3#
      • 1...e5!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Bd3#
      • 1...Kd5!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kf5
        • 2.Bd3#
      • 1...Kxd4!
    • 1.Qc3?
      • 1...Kf5
        • 2.Bd3#
      • 1...f5
        • 2.Bb7#
      • 1...e5
        • 2.Qd3#
      • 1...Kd5!
  • Keys
    • 1.Qd6!
      • 1...Kf3
        • 2.Qf4#
      • 1...Kf5
        • 2.Bd3#
      • 1...f5
        • 2.Bb7#
      • 1...e5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • P(c);CHECK
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::B(C)
        • P(c);SBLOCK::B(C)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::B(C)
      • P(c);SBLOCK::B(C)
      • P(b);SBLOCK::QAB1(B)
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