MESON Chess Problem Database

Problem Display
PID: 153276 (8/8/8/8/7B/2K1p3/2R2pR1/3k4 w - - 0 1)

Lincoln, Robert A

StrateGems, 2012

8/8/8/8/7B/2K1p3/2R2pR1/3k4

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Rg1#
  • Tries
    • 1.Kb2?
      • 1...Ke1
        • 2.Rg1#
      • 1...f1Q
        • 2.Rc1#
      • 1...f1S
        • 2.Rc1#
      • 1...f1B
        • 2.Rc1#
      • 1...f1R
        • 2.Rc1#
      • 1...e2!
    • 1.Rb2?
      • 1...Ke1
        • 2.Rg1#
      • 1...f1Q
        • 2.Rb1#
      • 1...f1S
        • 2.Rb1#
      • 1...f1B
        • 2.Rb1#
      • 1...f1R
        • 2.Rb1#
      • 1...e2
        • 2.Rb1#
      • 1...Kc1!
  • Keys
    • 1.Ra2!
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke1
        • 2.Rg1#
      • 1...f1Q
        • 2.Ra1#
      • 1...f1S
        • 2.Ra1#
      • 1...f1B
        • 2.Ra1#
      • 1...f1R
        • 2.Ra1#
      • 1...e2
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::R(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(B)
        • P(b);::R1(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(B)
        • P(b);::R(A)
        • P(c);SBLOCK::R(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);P-FLIGHT::R(A)
      • K(a);P-FLIGHT,P_SPINP(b)::R(B)
      • P(b);::R(A)
      • P(c);SBLOCK::R(A)
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