MESON Chess Problem Database

Problem Display
PID: 234791 (k7/p2K4/n7/8/3B4/7Q/R7/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2017

k7/p2K4/n7/8/3B4/7Q/R7/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kc8?
      • threat
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...Sb4
        • 2.Rxa7#
      • 1...Sc7
        • 2.Rxa7#
      • 1...Sb8
        • 2.Rxa7#
      • 1...Sc5!
    • 1.Qh8+?
      • 1...Kb7
        • 2.Qc8#
      • 1...Sb8+!
  • Keys
    • 1.Kd8!
      • 1...Kb7
        • 2.Qc8#
      • 1...Kb8
        • 2.Qc8#
      • 1...Sb4
        • 2.Qc8#
      • 1...Sc5
        • 2.Qc8#
      • 1...Sc7
        • 2.Qc8#
      • 1...Sb8
        • 2.Rxa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • S(a);OGATE,P_SPINP(b)::R1(A),XP(b)
      • Refutation
        • S(a);P_SPINP(b)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • S(a);CHECK,P_SPINP(b),P_SPINS(a)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • K(c);P-FLIGHT::QAR1(B)
      • S(a);N_GUARD,P_SPINP(b)::QAR2(B)
      • S(a);OGATE,P_SPINP(b),SBLOCK::R1(A),XP(b)
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