MESON Chess Problem Database

Problem Display
PID: 50475 (r7/3Pnk1P/2pp3B/p2qRpPP/3N4/1B1b1Nr1/3K2n1/8 w - - 0 1)

Williams, Philip Hamilton

Chess Amateur (The), 1906

r7/3Pnk1P/2pp3B/p2qRpPP/3N4/1B1b1Nr1/3K2n1/8

#2

10 + 11

15351 SCPF/BCPS Black Books 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Bxe6#
    • 1...Sc8
      • 2.d8S#
    • 1...Sg8
      • 2.h8S#
    • 1...dxe5
      • 2.Sxe5#
  • Tries
    • 1.d8Q?
      • threat
        • 2.Rxe7#
        • 2.Qxe7#
        • 2.h8S#
      • 1...Rxg5
        • 2.Qxe7#
      • 1...dxe5
        • 2.Sxe5#
        • 2.h8S#
      • 1...Qe6
        • 2.Bxe6#
        • 2.h8S#
      • 1...Ra7
        • 2.Qf8#
        • 2.h8S#
      • 1...Sg6
        • 2.Qf6#
      • 1...Sc8
        • 2.Qf6#
        • 2.Qe8#
        • 2.Qf8#
        • 2.Qg8#
        • 2.h8S#
      • 1...Sg8
        • 2.hxg8Q#
        • 2.hxg8B#
        • 2.h8S#
      • 1...Rxd8!
    • 1.h8Q?
      • threat
        • 2.Qg7#
        • 2.Qh7#
      • 1...Rxg5
        • 2.Sxg5#
      • 1...Rg8
        • 2.Qf6#
      • 1...f4
        • 2.Qg7#
      • 1...Rxh8!
  • Keys
    • 1.Re6!
      • threat
        • 2.Rf6#
      • 1...Qxe6
        • 2.Bxe6#
      • 1...Rxg5
        • 2.Sxg5#
      • 1...Sg6
        • 2.hxg6#
      • 1...Sc8
        • 2.d8S#
      • 1...Sg8
        • 2.h8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(e);OGATE::B(B),XQ(e)
    • S(i);S_CUTR(k)::P=S
    • S(i);SBLOCK,S_CUTR(k)::P=S
    • P(h);XR(E)::S(C),XP(h)
  • Tries
    • Try
      • P(I);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);XP(F)::QAR1(I),XS(i)
        • S(i);OGATE::QAR1(I)
      • Refutation
        • R(k);XQ(I)
    • Try
      • P(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(F)::S(C),XR(c)
        • R(k);SBLOCK::QAR1(J)
        • P(f);::QAR1(J)
      • Refutation
        • R(k);XQ(J)
  • Actual
    • R(E);N_PINQ(e)
    • Threat
      • R1(E)
    • Vars
      • Q(e);OGATE,P_SPINQ(e),XR(E)::B(B),XQ(e)
      • R(c);XP(F)::S(C),XR(c)
      • S(i);OGATE::P(G),XS(i)
      • S(i);S_CUTR(k)::P=S
      • S(i);SBLOCK,S_CUTR(k)::P=S
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).