MESON Chess Problem Database

Problem Display
PID: 8060 (Rq6/1P1kP1N1/1P1p4/3P4/7B/8/8/5K2 w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

Rq6/1P1kP1N1/1P1p4/3P4/7B/8/8/5K2

#2

8 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Rd8#
      • 2.e8Q#
      • 2.e8B#
    • 1...Qc7
      • 2.e8Q#
      • 2.e8B#
    • 1...Qxb7
      • 2.Rd8#
      • 2.e8Q#
      • 2.e8B#
    • 1...Qc8
      • 2.bxc8Q#
      • 2.bxc8B#
    • 1...Qd8
      • 2.Rxd8#
      • 2.exd8Q#
      • 2.exd8R#
    • 1...Qf8+
      • 2.exf8S#
  • Keys
    • 1.Ra7!
      • 1...Qf8+
        • 2.exf8S#
      • 1...Qxa7
        • 2.e8Q#
        • 2.e8B#
      • 1...Qxb7
        • 2.e8Q#
      • 1...Qe8
        • 2.b8Q#
        • 2.b8R#
      • 1...Qc7
        • 2.e8Q#
        • 2.e8B#
      • 1...Qa8
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Qc8
        • 2.b8S#
      • 1...Qd8
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Qg8
        • 2.b8Q#
        • 2.b8R#
      • 1...Qh8
        • 2.b8Q#
        • 2.b8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD::P=Q
    • Q(c);OGATE::PXQ(c)=Q
    • Q(c);CHECK,OGATE::PXQ(c)=S
  • Actual
    • R(H);
    • Vars
      • Q(c);CHECK,OGATE::PXQ(c)=S
      • Q(c);N_GUARD,XR(H)::P=Q
      • Q(c);N_GUARD,P_SPINQ(c),XP(E)::P=Q
      • Q(c);OGATE::P=Q
      • Q(c);N_GUARD::P=Q
      • Q(c);OGATE::PXQ(c)=Q
      • Q(c);OGATE,SBLOCK::P=S
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