MESON Chess Problem Database

Problem Display
PID: 183466 (1B3R2/7B/4K3/2p4p/6P1/p1PNkN1r/Q7/1n1nr2b w - - 0 1)

Sparke, Arthur M

British Chess Magazine, 1914

1B3R2/7B/4K3/2p4p/6P1/p1PNkN1r/Q7/1n1nr2b

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3
      • 2.Bf4#
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sbxc3
      • 2.Qd2#
    • 1...Sf2
      • 2.Qxf2#
    • 1...Sdxc3
      • 2.Qf2#
    • 1...c4
      • 2.Ba7#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qe6#
      • 1...Rxf3
        • 2.Re8#
      • 1...Sbxc3
        • 2.Qd2#
      • 1...Sdxc3
        • 2.Qf2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...c4
        • 2.Ba7#
      • 1...Bxf3!
    • 1.Ke7?
      • threat
        • 2.Qe6#
      • 1...Bxf3
        • 2.Bf4#
      • 1...Sbxc3
        • 2.Qd2#
      • 1...Sdxc3
        • 2.Qf2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...c4
        • 2.Ba7#
      • 1...Rxf3!
    • 1.Bd6?
      • threat
        • 2.Bxc5#
      • 1...Sd2
        • 2.Qxd2#
      • 1...c4
        • 2.Bc5#
      • 1...Sb2!
    • 1.Ba7?
      • threat
        • 2.Bxc5#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sb2!
    • 1.Qg2?
      • threat
        • 2.Bf4#
      • 1...Rxf3
        • 2.Rxf3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Bxg2!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Qe6#
      • 1...Rxf3
        • 2.Re8#
      • 1...Bxf3
        • 2.Bf4#
      • 1...Sbxc3
        • 2.Qd2#
      • 1...Sdxc3
        • 2.Qf2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...c4
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK,XS(D)::B(H)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(a);N_GUARD,XP(B)::QAB1(A)
    • S(b);N_GUARD::QAB1(A),XS(b)
    • S(b);N_GUARD,XP(B)::QAB1(A)
    • P(h);OGATEB::B(H)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • R(g);SBLOCK,XS(D)::R(I)
        • S(a);N_GUARD,XP(B)::QAB1(A)
        • S(b);N_GUARD,XP(B)::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • P(h);OGATEB::B(H)
      • Refutation
        • B(d);XS(D)
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • B(d);SBLOCK,XS(D)::B(H)
        • S(a);N_GUARD,XP(B)::QAB1(A)
        • S(b);N_GUARD,XP(B)::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • P(h);OGATEB::B(H)
      • Refutation
        • R(g);XS(D)
    • Try
      • B(H);
      • Threat
        • B(H),XP(h)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • P(h);::B(H)
      • Refutation
        • S(b);
    • Try
      • B(H);P_PINP(h)
      • Threat
        • B(H),XP(h)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Threat
        • B(H)
      • Vars
        • R(g);OGATE,XS(D)::R1(I),XR(g)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • B(d);XQ(A)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • R(g);SBLOCK,XS(D)::R(I)
      • B(d);SBLOCK,XS(D)::B(H)
      • S(a);N_GUARD,XP(B)::QAB1(A)
      • S(b);N_GUARD,XP(B)::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(b);N_GUARD::QAB1(A),XS(b)
      • P(h);OGATEB::B(H)
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