MESON Chess Problem Database

Problem Display
PID: 8033 (k7/2r5/NKP1P3/8/4Q3/8/8/8 w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

k7/2r5/NKP1P3/8/4Q3/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Qxc6#
    • 1...Rb7+
      • 2.cxb7#
    • 1...Rd7
      • 2.cxd7#
    • 1...Re7
      • 2.c7#
    • 1...Rf7
      • 2.c7#
    • 1...Rg7
      • 2.c7#
    • 1...Rh7
      • 2.c7#
    • 1...Rc8
      • 2.c7#
  • Tries
    • 1.Qf3?
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rb7+
        • 2.cxb7#
      • 1...Ra7
        • 2.Qf8#
      • 1...Rd7
        • 2.cxd7#
      • 1...Re7
        • 2.c7#
      • 1...Rg7
        • 2.Qf8#
        • 2.c7#
      • 1...Rh7
        • 2.Qf8#
        • 2.c7#
      • 1...Rc8
        • 2.c7#
      • 1...Rf7!
    • 1.e7?
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rb7+
        • 2.cxb7#
      • 1...Ra7
        • 2.e8Q#
        • 2.e8R#
      • 1...Rd7
        • 2.cxd7#
      • 1...Rc8
        • 2.c7#
      • 1...Rxe7!
  • Keys
    • 1.Qd5!
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rb7+
        • 2.cxb7#
      • 1...Rf7
        • 2.Qd8#
        • 2.c7#
      • 1...Ra7
        • 2.Qd8#
      • 1...Rd7
        • 2.cxd7#
      • 1...Re7
        • 2.Qd8#
        • 2.c7#
      • 1...Rg7
        • 2.Qd8#
        • 2.c7#
      • 1...Rh7
        • 2.Qd8#
        • 2.c7#
      • 1...Rc8
        • 2.c7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
    • R(a);CHECK,OGATE::P(D),XR(a)
    • R(a);OGATE::QAB(A)+P(D),XR(a)
    • R(a);OGATE::QAB(A)+P(D)
  • Tries
    • Try
      • Q(A);
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
        • R(a);CHECK,OGATE::P(D),XR(a)
        • R(a);N_GUARD::QAR(A)
        • R(a);OGATE::QAB(A)+P(D),XR(a)
        • R(a);OGATE::QAB(A)+P(D)
      • Refutation
        • R(a);
    • Try
      • P(E);
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
        • R(a);CHECK,OGATE::P(D),XR(a)
        • R(a);N_GUARD::P=Q
        • R(a);OGATE::QAB(A)+P(D),XR(a)
        • R(a);OGATE::QAB(A)+P(D)
      • Refutation
        • R(a);XP(E)
  • Actual
    • Q(A);
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
      • R(a);CHECK,OGATE::P(D),XR(a)
      • R(a);N_GUARD::QAR(A)
      • R(a);OGATE::QAB(A)+P(D),XR(a)
      • R(a);OGATE::QAB(A)+P(D)
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