MESON Chess Problem Database

Problem Display
PID: 152161 (Q7/5brp/4p3/8/6R1/7p/6BN/1K4kr w - - 0 1)

Ellerman, Arnoldo

Comm., Good Companions (May Meredith Ty.), 1915

Q7/5brp/4p3/8/6R1/7p/6BN/1K4kr

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Qa7#
    • 1...hxg2
      • 2.Qxg2#
  • Keys
    • 1.Qa2!
      • threat
        • 2.Sf3#
      • 1...Kxh2+
        • 2.Bf1#
      • 1...Bg6+
        • 2.Be4#
      • 1...Rxh2
        • 2.Qa7#
      • 1...hxg2
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK,XS(C)::QAB(E)
    • P(c);OGATE,P_SPINP(c),XB(B)::QAR1(E),XP(c)
  • Actual
    • Q(E);
    • Threat
      • S(C)
    • Vars
      • K(a);CHECK,S_FLIGHT,XS(C)::QAR(E)+B(B)
      • B(e);CHECK,S_CUTR(f)::R(D)+B(B)
      • R(b);SBLOCK,XS(C)::QAB(E)
      • P(c);OGATE,P_SPINP(c),XB(B)::QAR1(E),XP(c)
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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).