MESON Chess Problem Database

Problem Display
PID: 140456 (1nR5/3rP3/5QP1/3kN1KR/4q3/1n1PPrpN/8/1b5B w - - 0 1)

Vaughan, Colin V

4th HM., BCF 131. Ty., 1972-1973

1nR5/3rP3/5QP1/3kN1KR/4q3/1n1PPrpN/8/1b5B

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4+
      • 2.Sxf4#
    • 1...Rf1
      • 2.Bxe4#
    • 1...Rf2
      • 2.Bxe4#
    • 1...Rf4
      • 2.Sxf4#
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb6#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Qxg6+
        • 2.Kxg6#
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Qf4+
        • 2.Sxf4#
      • 1...Qg4+
        • 2.Kxg4#
      • 1...Qh4+
        • 2.Kxh4#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Qxd3
        • 2.Qe5#
      • 1...Qxc4
        • 2.Kh6#
      • 1...Rxf6
        • 2.Kxf6#
      • 1...Rc7
        • 2.Qd6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Qd4
        • 2.Qf7#
      • 1...Qe6
        • 2.Sf4#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rb7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 3
  • Sets
    • Q(e);CHECK,N_GUARD,P_SPINR(c)::S(D),XQ(e)
    • R(c);OGATE,P_SPINQ(e)::B(A),XQ(e)
    • R(c);N_GUARD,P_SPINQ(e)::S(D),XR(c)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • Q(e);CHECK,N_GUARD,P_SPINR(c)::QAR2(H),XQ(e)
      • Q(e);CHECK,P_SPINR(c),XP(I)::R(G)+K(F),XQ(e)
      • Q(e);CHECK,P_SPINR(c),XP(C)::S(E),XQ(e)
      • Q(e);CHECK,N_GUARD,P_SPINR(c)::S(D),XQ(e)
      • Q(e);CHECK,P_SPINR(c)::R(G)+K(F),XQ(e)
      • Q(e);CHECK,N_GUARD,P_SPINR(c)::QAR1(H),XQ(e)
      • R(c);CHECK,N_GUARD,P_SPINQ(e)::QAR2(H),XR(c)
      • Q(e);N_GUARD,P_SPINR(c),XP(B)::QAR1(H)
      • Q(e);N_GUARD,P_SPINR(c),XS(E)::R(G)+K(F)
      • R(c);P_SPINQ(e),XQ(H)::R(G)+K(F),XR(c)
      • R(g);N_GUARD::QAR1(H)
      • S(h);N_GUARD::QAB1(H),XS(h)
      • Q(e);N_GUARD,P_SPINR(c)::QAB(H)
      • Q(e);N_GUARD,P_SPINR(c)::S(D)
      • R(g);N_GUARD::QAR1(H),XR(g)
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