MESON Chess Problem Database

Problem Display
PID: 181208 (8/8/8/4pp1K/2R1Pk2/1Q6/8/8 w - - 0 1)

Howard, David M

Problem Observer, 2013

8/8/8/4pp1K/2R1Pk2/1Q6/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rc1?
      • 1...fxe4
        • 2.Rf1#
      • 1...Kxe4!
    • 1.Rc2?
      • 1...fxe4
        • 2.Rf2#
      • 1...Kxe4!
    • 1.Rc6?
      • 1...fxe4
        • 2.Rf6#
      • 1...Kxe4!
    • 1.Rc7?
      • 1...fxe4
        • 2.Rf7#
      • 1...Kxe4!
    • 1.Rc8?
      • 1...fxe4
        • 2.Rf8#
      • 1...Kxe4!
  • Keys
    • 1.Rc3!
      • 1...Kxe4
        • 2.Qc4#
      • 1...fxe4
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • P(c);SBLOCK,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(B);
      • Vars
        • P(c);SBLOCK,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK,XP(C)::R(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • R(B);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
      • P(c);OGATEB,SBLOCK,XP(C)::QAR(A)
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