MESON Chess Problem Database

Problem Display
PID: 23838 (1Q6/8/1B6/1p6/k6r/7p/K7/8 w - - 0 1)

Lincoln, Robert A

Magadanskaya Pravda, 1997

1Q6/8/1B6/1p6/k6r/7p/K7/8

#2

3 + 4

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qa7#
      • 2.Qa8#
    • 1...b4
      • 2.Qe8#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qa3#
        • 2.Qb3#
      • 1...Kb4
        • 2.Qb3#
      • 1...Rb4
        • 2.Qa3#
      • 1...b4!
    • 1.Qd6?
      • threat
        • 2.Qa3#
      • 1...b4
        • 2.Qc6#
        • 2.Qd7#
      • 1...Rb4!
    • 1.Qg8?
      • threat
        • 2.Qb3#
      • 1...Kb4
        • 2.Qb3#
      • 1...Rb4
        • 2.Qa8#
      • 1...b4
        • 2.Qe8#
      • 1...Rc4!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qa3#
      • 1...b4
        • 2.Qe8#
      • 1...Rb4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • R(c);::QAR1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • R(c);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • R(c);SBLOCK::QAR(C)
        • P(d);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • R(c);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • P(d);OGATEB,SBLOCK::QAB(C)
      • R(c);SBLOCK::QAR(C)
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