MESON Chess Problem Database

Problem Display
PID: 152387 (3K1R2/Pp1p3N/r1bQ4/2p1N1pr/p3k2p/q7/BnR5/3n2B1 w - - 0 1)

Clark, WA

Hampstead and Highgate Express, 1898

(First published on Sat Jun 11 1898)

3K1R2/Pp1p3N/r1bQ4/2p1N1pr/p3k2p/q7/BnR5/3n2B1

#2

9 + 13

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rh6
      • 2.Sxg5#
    • 1...Bb5
      • 2.Bd5#
      • 2.Qd5#
    • 1...Bd5
      • 2.Bxd5#
      • 2.Qxd5#
    • 1...Sd3
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Re2#
        • 2.Rc4#
      • 1...Sf2
        • 2.Re2#
      • 1...Qc3
        • 2.Re2#
      • 1...Qe3
        • 2.Rc4#
      • 1...Sc3
        • 2.Re2#
      • 1...Se3
        • 2.Rc4#
      • 1...Sd3
        • 2.Rc4#
      • 1...Sc4
        • 2.Re2#
        • 2.Rc3#
        • 2.Rxc4#
      • 1...c4
        • 2.Re2#
        • 2.Rxc4#
        • 2.Qd4#
      • 1...Qd3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qg6#
      • 1...Qxa2
        • 2.Sxc5#
      • 1...Qxd3
        • 2.Qe7#
      • 1...Sxd3
        • 2.Rc4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf2
        • 2.Re2#
      • 1...Qb3
        • 2.Sxc5#
      • 1...Rh6
        • 2.Sxg5#
      • 1...Bb5
        • 2.Qd5#
      • 1...Se3
        • 2.Sf2#
      • 1...Sc4
        • 2.Rxc4#
      • 1...c4
        • 2.Qd4#
      • 1...g4
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(i);N_GUARD::S(G),XP(h)
    • S(b);N_GUARD::R(C)
    • S(b);N_GUARD::R(C),XS(b)
    • P(g);N_GUARD::QAR1(E)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::B(B)+R(C),DCHECK
        • Q(c);::B(B)+R(C),DCHECK
        • S(b);::R(C)
      • Refutation
        • Q(c);
  • Actual
    • S(D);
    • Threat
      • QAB(E)
    • Vars
      • Q(c);N_GUARD,XB(B)::S(D),XP(g)
      • Q(c);SBLOCK,XS(D)::QAR(E)
      • S(b);N_GUARD,XS(D)::R(C)
      • B(k);N_GUARD::QAB1(E),XB(k)
      • S(a);N_GUARD::R(C)
      • Q(c);N_GUARD::S(D),XP(g)
      • R(i);N_GUARD::S(G),XP(h)
      • B(k);N_GUARD::QAB1(E)
      • S(a);N_GUARD,SBLOCK::S(D)
      • S(b);N_GUARD::R(C),XS(b)
      • P(g);N_GUARD::QAR1(E)
      • P(h);N_GUARD::R1(I)
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