MESON Chess Problem Database

Problem Display
PID: 182722 (b1B5/8/2kp4/Q7/2K1P3/8/8/8 w - - 0 1)

Lincoln, Robert A

Problem Observer, 2015

b1B5/8/2kp4/Q7/2K1P3/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kb4?
      • 1...d5
        • 2.Qc5#
      • 1...Bb7!
    • 1.Kd4?
      • 1...d5
        • 2.Qc5#
      • 1...Bb7!
    • 1.Qa7?
      • threat
        • 2.Bd7#
      • 1...Bb7
        • 2.Qxb7#
      • 1...d5+!
  • Keys
    • 1.Qd8!
      • 1...d5+
        • 2.exd5#
      • 1...Bb7
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(b);N_GUARD::QAR1(C)
      • Refutation
        • B(c);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(b);N_GUARD::QAR1(C)
      • Refutation
        • B(c);
    • Try
      • Q(C);
      • Threat
        • B(D)
      • Vars
        • B(c);N_GUARD::QAB1(C),XB(c)
      • Refutation
        • P(b);CHECK
  • Actual
    • Q(C);
    • Vars
      • P(b);CHECK,OGATE::P(B),XP(b)
      • B(c);SBLOCK::B(D)
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