MESON Chess Problem Database

Problem Display
PID: 60180 (1rb1Kn2/1r1n1B2/R2Pp3/3kPQp1/N1pN3q/2p1P3/7B/8 w - - 0 1)

Cauveren, Jonas Ephraim

4th HM., Brisbane Courier, 1931

1rb1Kn2/1r1n1B2/R2Pp3/3kPQp1/N1pN3q/2p1P3/7B/8

#2

10 + 11

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qf3#
    • 1...Qh6
      • 2.Qf3#
    • 1...Qh8
      • 2.Qf3#
    • 1...Sc5
      • 2.Sxc3#
    • 1...Sxe5
      • 2.Qxe5#
    • 1...Sb6
      • 2.Ra5#
    • 1...Sf6+
      • 2.exf6#
    • 1...Sg6
      • 2.Bxe6#
    • 1...Sh7
      • 2.Bxe6#
  • Tries
    • 1.Ra5+?
      • 1...Sc5
        • 2.Sxc3#
        • 2.Rxc5#
      • 1...Rb5!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Sf6+
        • 2.exf6#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sb6
        • 2.Sb4#
      • 1...Sc5
        • 2.Sxc3#
      • 1...Sg6
        • 2.Bxe6#
      • 1...g4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD::QAB(F)
    • S(h);SBLOCK::S(C),XP(a)
    • S(h);OGATE,P_SPINS(h),XP(E)::QAR1(F),XS(h)
    • S(h);N_GUARD,S_CUTR(g)::R(G)
    • S(h);CHECK,OGATE::QAR(F)+P(E),XS(h)
    • S(k);N_GUARD::B(I),XP(f)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • R(g);P_SPINR(g)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • S(h);CHECK,OGATE::QAR(F)+P(E),XS(h)
      • S(h);OGATE,P_SPINS(h),XP(E)::QAR1(F),XS(h)
      • S(h);S_CUTR(g)::S(D)
      • S(h);SBLOCK::S(C),XP(a)
      • S(k);N_GUARD::B(I),XP(f)
      • P(e);S_CUTQ(c)::P(B)
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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).