MESON Chess Problem Database

Problem Display
PID: 169975 (k2K4/8/nP6/8/8/1Q2B3/8/1R6 w - - 0 1)

Lincoln, Robert A

StrateGems, 2017

k2K4/8/nP6/8/8/1Q2B3/8/1R6

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sb8
      • 2.b7#
  • Tries
    • 1.Kc8?
      • threat
        • 2.Qd5#
        • 2.b7#
      • 1...Sb4
        • 2.b7#
      • 1...Sc7
        • 2.b7#
      • 1...Sb8
        • 2.b7#
      • 1...Sc5!
    • 1.Qf7?
      • threat
        • 2.Qa7#
      • 1...Kb8
        • 2.Qa7#
      • 1...Sc7!
  • Keys
    • 1.Qe6!
      • 1...Kb7
        • 2.Qc8#
      • 1...Kb8
        • 2.Qc8#
      • 1...Sc5
        • 2.Qc8#
      • 1...Sb4
        • 2.Qc8#
      • 1...Sc7
        • 2.Qc8#
      • 1...Sb8
        • 2.b7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::P(D)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::P(D)
      • Refutation
        • S(a);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • S(a);
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • K(b);P-FLIGHT::QAR1(B)
      • S(a);N_GUARD::QAR2(B)
      • S(a);SBLOCK::P(D)
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