MESON Chess Problem Database

Problem Display
PID: 150343 (6b1/B3p3/3br3/q1N1R3/2pkNpP1/7p/6PK/2Q5 w - - 0 1)

Herbert, JE

Hampstead and Highgate Express, 1895

(First published on Sat Nov 23 1895)

6b1/B3p3/3br3/q1N1R3/2pkNpP1/7p/6PK/2Q5

#2

8 + 9

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qb6
      • 2.Qc3#
    • 1...Qc7
      • 2.Qc3#
    • 1...Qd8
      • 2.Qc3#
    • 1...Qa2
      • 2.Qc3#
    • 1...Qa4
      • 2.Qc3#
    • 1...Qb5
      • 2.Qc3#
    • 1...Qxc5
      • 2.Qc3#
    • 1...Qa6
      • 2.Qc3#
    • 1...Qxa7
      • 2.Qc3#
  • Tries
    • 1.Sb3+?
      • 1...Kd3
        • 2.Sf2#
      • 1...Kxe5!
    • 1.Sxe6+?
      • 1...Kd3
        • 2.Sf2#
        • 2.Sxf4#
      • 1...Kxe5!
    • 1.Sd7+?
      • 1...Kd3
        • 2.Sf2#
      • 1...Qb6
        • 2.Qd2#
        • 2.Qc3#
      • 1...Qc5
        • 2.Qd2#
        • 2.Qc3#
      • 1...Qxa7
        • 2.Qd2#
        • 2.Qc3#
      • 1...Bc5!
    • 1.Qb2+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Qc3
        • 2.Qxc3#
      • 1...c3!
    • 1.Qxc4+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxe5
        • 2.Sd3#
        • 2.Sd7#
      • 1...Kxc4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Rd5#
      • 1...Kxe5
        • 2.Sd7#
      • 1...Qxc3
        • 2.Qxf4#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Bxe5
        • 2.Qd2#
      • 1...Rf6
        • 2.Re4#
      • 1...Rg6
        • 2.Re4#
      • 1...Rh6
        • 2.Re4#
      • 1...f3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 9
  • Sets
    • Q(e);N_GUARD::QAB1(A),XQ(e)
    • Q(e);N_GUARD::QAB1(A)
    • Q(e);N_GUARD,P_PINP(B)::QAB1(A)
    • Q(e);N_GUARD,P_SPINQ(e),XS(F)::QAB1(A)
    • Q(e);N_GUARD,XB(H)::QAB1(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • S(F);CHECK,XR(g)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • Q(e);N_GUARD,P_SPINQ(e)::QAB1(A),XQ(e)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XQ(A)
  • Actual
    • S(D);
    • Threat
      • R1(G)
    • Vars
      • K(c);S_FLIGHT,XR(G)::S(F)
      • Q(e);SBLOCK,XS(D)::QAR2(A),XP(d)
      • R(g);SBLOCK,XR(G)::QAR2(A)
      • B(f);SBLOCK,XR(G)::QAR2(A)
      • R(g);N_GUARD::R1(G)
      • P(d);N_GUARD,P_PINR(G)::QAB1(A)
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