MESON Chess Problem Database

Problem Display
PID: 84662 (1BRr4/2r1N2p/3p1pb1/2P1kqnR/2Bp2Q1/5PPp/3NnK2/8 w - - 0 1)

Fillery, William Edmund Frank

British Chess Magazine, 1975

1BRr4/2r1N2p/3p1pb1/2P1kqnR/2Bp2Q1/5PPp/3NnK2/8

#2

11 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qe6#
    • 1...Qc2
      • 2.Qe6#
    • 1...Qd3
      • 2.Qe6#
    • 1...Qe4
      • 2.Qe6#
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qxf3+
      • 2.Sxf3#
    • 1...Qf4
      • 2.Qe6#
    • 1...Rxc5
      • 2.Rxc5#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Ra7
      • 2.Sc6#
    • 1...Rb7
      • 2.Sc6#
    • 1...Rcd7
      • 2.Sc6#
    • 1...Bxh5
      • 2.Qxf5#
    • 1...Bf7
      • 2.Qxf5#
    • 1...Be8
      • 2.Qxf5#
    • 1...Sxf3
      • 2.Sxf3#
      • 2.Qe4#
    • 1...Se4+
      • 2.Qxe4#
    • 1...Se6
      • 2.Qe4#
    • 1...Sf7
      • 2.Qe4#
  • Tries
    • 1.Sxg6+?
      • 1...Qxg6
        • 2.Qe6#
      • 1...hxg6!
    • 1.Bg8?
      • threat
        • 2.Sc4#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Rxc5
        • 2.Rxc5#
      • 1...Bf7
        • 2.Qxf5#
      • 1...Sf7
        • 2.Qe4#
      • 1...Qc2
        • 2.Qe6#
      • 1...Qd3
        • 2.Qe6#
      • 1...Qe6
        • 2.Qxe6#
      • 1...d5
        • 2.Sc6#
      • 1...Rxg8!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Sc4#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Rxc5
        • 2.Rxc5#
      • 1...Bxf7
        • 2.Qxf5#
      • 1...Sxf7
        • 2.Qe4#
      • 1...Qc2
        • 2.Qe6#
      • 1...Qd3
        • 2.Qe6#
      • 1...Qe6
        • 2.Qxe6#
      • 1...d5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(e);N_PINP(C),OGATE,P_SPINS(f)::QAR1(F)
    • Q(e);N_PINP(C),OGATE,P_SPINS(f)::QAR1(F),XQ(e)
    • Q(e);CHECK,P_SPINS(f),XP(C)::S(A),XQ(e)
    • Q(e);OGATE,P_SPINS(f)::QAR1(F)
    • R(j);OGATE,P_SPINP(g),XP(G)::R(K),XR(j)
    • R(j);N_GUARD,P_SPINP(g)::S(I),XR(j)
    • R(j);N_GUARD,P_SPINP(g)::S(I)
    • B(i);N_GUARD,XR(H)::QAR1(F),XQ(e)
    • B(i);N_GUARD::QAR1(F),XQ(e)
    • S(f);CHECK,N_GUARD,P_SPINQ(e)::QAR1(F),XS(f)
    • S(f);N_GUARD,P_SPINQ(e)::QAR1(F)
  • Tries
    • Try
      • S(I);CHECK,XB(i)
      • Vars
        • Q(e);N_PINP(C),OGATE,P_SPINS(f),XS(I)::QAR1(F)
      • Refutation
        • P(k);XS(I)
    • Try
      • B(E);
      • Threat
        • S(A)
      • Vars
        • Q(e);CHECK,P_SPINS(f),XP(C)::S(A),XQ(e)
        • S(f);CHECK,N_GUARD,P_SPINQ(e)::QAR1(F),XS(f)
        • R(j);OGATE,P_SPINP(g),XP(G)::R(K),XR(j)
        • B(i);N_GUARD::QAR1(F),XQ(e)
        • S(f);N_GUARD,P_SPINQ(e)::QAR1(F)
        • Q(e);N_PINP(C),OGATE,P_SPINS(f)::QAR1(F)
        • Q(e);N_PINP(C),OGATE,P_SPINS(f)::QAR1(F),XQ(e)
        • P(g);P_SPINR(j)::S(I)
      • Refutation
        • R(l);XB(E)
  • Actual
    • B(E);
    • Threat
      • S(A)
    • Vars
      • Q(e);CHECK,P_SPINS(f),XP(C)::S(A),XQ(e)
      • S(f);CHECK,N_GUARD,P_SPINQ(e)::QAR1(F),XS(f)
      • R(j);OGATE,P_SPINP(g),XP(G)::R(K),XR(j)
      • B(i);N_GUARD,XB(E)::QAR1(F),XQ(e)
      • S(f);N_GUARD,P_SPINQ(e),XB(E)::QAR1(F)
      • Q(e);N_PINP(C),OGATE,P_SPINS(f)::QAR1(F)
      • Q(e);N_PINP(C),OGATE,P_SPINS(f)::QAR1(F),XQ(e)
      • P(g);P_SPINR(j)::S(I)
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