MESON Chess Problem Database

Problem Display
PID: 101155 (6B1/1pr1p2K/2b1P3/2Pk4/1r1pp3/1PpN4/Q6B/2b5 w - - 0 1)

Nield, Joshua

Good Companions, 1921

6B1/1pr1p2K/2b1P3/2Pk4/1r1pp3/1PpN4/Q6B/2b5

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Qxb3#
    • 1...Ra4
      • 2.bxa4#
    • 1...Rc4
      • 2.bxc4#
    • 1...Rb5
      • 2.b4#
    • 1...Rb6
      • 2.b4#
    • 1...e3
      • 2.Qg2#
  • Keys
    • 1.Bd6!
      • threat
        • 2.Sxb4#
      • 1...exd6+
        • 2.e7#
      • 1...Rxb3
        • 2.Qxb3#
      • 1...exd3
        • 2.Qg2#
      • 1...e3
        • 2.Qg2#
      • 1...Ra4
        • 2.bxa4#
      • 1...Rc4
        • 2.bxc4#
      • 1...Rb5
        • 2.b4#
      • 1...Rb6
        • 2.b4#
      • 1...Ba3
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_SPINR(c),XP(C)::QAB(A),XR(c)
    • R(c);OGATE::QAB(A)+P(C),XR(c)
    • R(c);OGATE::P(C),XR(c)
    • R(c);OGATE::QAB(A)+P(C)
    • P(e);OGATEB::QAB(A)
  • Actual
    • B(B);
    • Threat
      • S(D),XR(c)
    • Vars
      • P(j);CHECK,OGATE,XB(B)::B(H)+P(F)
      • R(c);OGATE,P_SPINR(c),XP(C)::QAB(A),XR(c)
      • P(e);OGATEB,XS(D)::QAB(A)
      • P(e);OGATEB::QAB(A)
      • R(c);OGATE::QAB(A)+P(C),XR(c)
      • R(c);OGATE::P(C),XR(c)
      • R(c);OGATE::QAB(A)+P(C)
      • B(a);N_GUARD::S(D)
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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).