MESON Chess Problem Database

Problem Display
PID: 8018 (8/8/6p1/4K3/1pB1Pp1N/B3k3/R2p1p2/6nQ w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

8/8/6p1/4K3/1pB1Pp1N/B3k3/R2p1p2/6nQ

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qf3#
    • 1...Sf3+
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qf3#
    • 1...d1S
      • 2.Bc1#
    • 1...d1B
      • 2.Bc1#
    • 1...f1S
      • 2.Qxg1#
    • 1...f1B
      • 2.Qxg1#
    • 1...bxa3
      • 2.Rxa3#
    • 1...b3
      • 2.Bc5#
    • 1...g5
      • 2.Sf5#
  • Tries
    • 1.Qh3+?
      • 1...Sf3+
        • 2.Qxf3#
      • 1...f3
        • 2.Sg2#
      • 1...Sxh3!
  • Keys
    • 1.Qg2!
      • 1...Sf3+
        • 2.Qxf3#
      • 1...bxa3
        • 2.Rxa3#
      • 1...d1Q
        • 2.Qxf2#
      • 1...d1S
        • 2.Bc1#
      • 1...d1B
        • 2.Bc1#
        • 2.Qxf2#
      • 1...d1R
        • 2.Qxf2#
      • 1...f1Q
        • 2.Qxd2#
      • 1...f1S
        • 2.Qxg1#
      • 1...f1B
        • 2.Qxg1#
        • 2.Qxd2#
      • 1...f1R
        • 2.Qxd2#
      • 1...Se2
        • 2.Qf3#
      • 1...Sh3
        • 2.Qf3#
      • 1...b3
        • 2.Bc5#
      • 1...f3
        • 2.Qg5#
      • 1...g5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAR1(A)
    • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
    • P(b);OGATEB::B(C)
    • P(c);OGATEB::QAB(A),XS(a)
    • P(e);OGATE,XB(C)::R(B),XP(e)
    • P(e);OGATE::B(C)
    • P(g);N_GUARD::S(F)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);CHECK,N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
        • P(f);P_SPINP(f)::S(F)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
      • P(e);OGATE,XB(C)::R(B),XP(e)
      • P(b);::QAB1(A),XP(c)
      • P(b);OGATEB::B(C)
      • P(c);OGATE::QAB1(A),XP(b)
      • P(c);OGATEB::QAB(A),XS(a)
      • S(a);N_GUARD::QAR1(A)
      • P(e);OGATE::B(C)
      • P(f);OGATEB::QAB(A)
      • P(g);N_GUARD::S(F)
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