MESON Chess Problem Database

Problem Display
PID: 4786 (8/2p1B3/2prp3/P1Rp4/n2k1p2/N2P4/5P2/KBQ5 w - - 0 1)

Williams, Philip Hamilton

Illustrated London News, 1891

8/2p1B3/2prp3/P1Rp4/n2k1p2/N2P4/5P2/KBQ5

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Qxf4#
    • 1...Rd8
      • 2.Qxf4#
    • 1...Sb2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sxc5
      • 2.Qb2#
    • 1...Sb6
      • 2.Qc3#
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.Sb5+?
      • 1...Ke5
        • 2.d4#
      • 1...cxb5!
    • 1.Rc4+?
      • 1...Ke5
        • 2.Qxf4#
        • 2.d4#
      • 1...dxc4!
    • 1.Qb2+?
      • 1...Kxc5
        • 2.d4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb2!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe4#
        • 2.d4#
      • 1...dxc4!
  • Keys
    • 1.Qd2!
      • 1...Kxc5
        • 2.d4#
      • 1...Ke5
        • 2.d4#
      • 1...Sxc5
        • 2.Qb2#
      • 1...e5
        • 2.Qb4#
      • 1...Rd7
        • 2.Qxf4#
      • 1...Rd8
        • 2.Qxf4#
      • 1...Sb2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb6
        • 2.Qc3#
      • 1...f3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);::QAR2(C),XP(c)
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(a);N_GUARD,SBLOCK,XR(H)::QAB(C)
    • P(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(d),S_FLIGHT::P(F)
      • Refutation
        • P(e);XS(E)
    • Try
      • R(H);CHECK
      • Refutation
        • P(d);XR(H)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P_SPINR(f),S_FLIGHT,XR(H)::P(F)
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(d);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(b);OGATE,P_SPINR(f),S_FLIGHT,XR(H)::P(F)
      • K(b);OGATE,P_SPINP(d),S_FLIGHT::P(F)
      • S(a);N_GUARD,SBLOCK,XR(H)::QAB(C)
      • P(g);SBLOCK::QAR2(C)
      • R(f);::QAR2(C),XP(c)
      • S(a);N_GUARD::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • P(c);N_GUARD::QAB1(C)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).