MESON Chess Problem Database

Problem Display
PID: 48101 (8/8/k6r/1p2Q3/8/7B/5B2/5K2 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/8/k6r/1p2Q3/8/7B/5B2/5K2

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Bc8#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Bc8#
        • 2.Qa7#
      • 1...Rxh3
        • 2.Qb6#
        • 2.Qa7#
      • 1...Rb6
        • 2.Qxb6#
      • 1...Re6
        • 2.Qa7#
      • 1...Rh7
        • 2.Bc8#
        • 2.Qb6#
      • 1...Rh8
        • 2.Qb6#
        • 2.Qa7#
      • 1...b4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qa7#
      • 1...Ka5
        • 2.Qa3#
      • 1...Kb7
        • 2.Qc8#
      • 1...Rb6
        • 2.Qxb6#
      • 1...Rh7
        • 2.Qb6#
      • 1...b4
        • 2.Bc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);::B(C)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);N_GUARD::QAR1(D),XR(c)
        • R(c);::QAR1(D)
      • Refutation
        • P(a);
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(D)
      • K(b);S_FLIGHT::QAB1(D)
      • R(c);N_GUARD::QAR1(D),XR(c)
      • R(c);N_GUARD::QAR1(D)
      • P(a);::B(C)
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