MESON Chess Problem Database

Problem Display
PID: 178723 (8/8/B1p5/P7/1k6/3K4/2P5/Q7 w - - 0 1)

Howard, David M

Problem Observer, 2010

8/8/B1p5/P7/1k6/3K4/2P5/Q7

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd4#
  • Tries
    • 1.Ke3?
      • 1...Kc5
        • 2.Qd4#
      • 1...c5!
    • 1.Ke4?
      • 1...Kc5
        • 2.Qd4#
        • 2.Qa3#
      • 1...c5!
    • 1.Qa2?
      • 1...c5
        • 2.c3#
      • 1...Kc5!
    • 1.Qa4+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Kxa4!
    • 1.c3+?
      • 1...Kb3
        • 2.Bc4#
      • 1...Kc5!
  • Keys
    • 1.Bc4!
      • 1...Kc5
        • 2.Qa3#
      • 1...c5
        • 2.c3#

FEATURES

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