MESON Chess Problem Database

Problem Display
PID: 47421 (8/1pRN4/k7/2R5/8/1P6/K7/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/1pRN4/k7/2R5/8/1P6/K7/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Ra5#
    • 1...b6
      • 2.Sb8#
  • Tries
    • 1.Ka1?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Kb1?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Kb2?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Ka3?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Rd5?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Re5?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Rf5?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Rg5?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
    • 1.Rh5?
      • 1...Ka7
        • 2.Ra5#
      • 1...b6
        • 2.Sb8#
      • 1...b5!
  • Keys
    • 1.b4!
      • threat
        • 2.Ra5#
      • 1...Ka7
        • 2.Ra5#
      • 1...b5
        • 2.R5c6#
      • 1...b6
        • 2.Sb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::R(C)
    • P(b);SBLOCK::S(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::S(E)
      • Refutation
        • P(b);
  • Actual
    • P(B);
    • Threat
      • R1(C)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::R(C)
      • P(b);N_GUARD,SBLOCK::R(C)
      • P(b);SBLOCK::S(E)
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