MESON Chess Problem Database

Problem Display
PID: 202632 (3n2q1/B1N5/6n1/4p1Q1/BRpPk3/4pNR1/K1Pp4/3br3 w - - 0 1)

Clark, Robert Winslow

Brisbane Courier, 1923

3n2q1/B1N5/6n1/4p1Q1/BRpPk3/4pNR1/K1Pp4/3br3

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Bxc2#
    • 1...Sf4
      • 2.Qxe5#
    • 1...Sh4
      • 2.Qxe5#
    • 1...Se7
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qxe5#
    • 1...Sh8
      • 2.Qxe5#
    • 1...Se6
      • 2.Bc6#
    • 1...Sf7
      • 2.Bc6#
    • 1...e2
      • 2.Sxd2#
    • 1...c3+
      • 2.d5#
  • Tries
    • 1.Bc6+?
      • 1...Qd5
        • 2.Bxd5#
      • 1...Sxc6!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Sg5#
      • 1...c3+
        • 2.d5#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sh4
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
      • 1...Sh8
        • 2.Qxe5#
      • 1...Se6
        • 2.Bc6#
      • 1...Sf7
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE,XP(B)::B(E),XB(a)
    • S(h);N_GUARD::QAR1(H),XP(g)
    • S(i);N_GUARD,S_CUTQ(j)::B(E)
    • P(d);N_GUARD::S(C),XP(c)
    • P(e);CHECK::R(F)+P(G)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • Q(j);N_GUARD,P_SPINQ(j)::B(E),XQ(j)
      • Refutation
        • S(i);XB(E)
  • Actual
    • Q(H);
    • Threat
      • S(C)
    • Vars
      • P(e);CHECK::R(F)+P(G)
      • B(a);OGATE,XP(B)::B(E),XB(a)
      • B(a);OGATE,XS(C)::QAB1(H),XB(a)
      • S(h);N_GUARD::QAR1(H),XP(g)
      • S(i);N_GUARD,S_CUTQ(j)::B(E)
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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).