MESON Chess Problem Database

Problem Display
PID: 221488 (b2N4/2r5/N7/2Pk1p2/2ppp3/R5B1/B7/2K4Q w - - 0 1)

Russell, R

British Chess Magazine, 1927

b2N4/2r5/N7/2Pk1p2/2ppp3/R5B1/B7/2K4Q

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Sb4#
    • 1...d3
      • 2.Rxd3#
    • 1...f4
      • 2.Qh5#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Bxc4#
      • 1...Rxc5
        • 2.Sb4#
      • 1...f4
        • 2.Qh5#
      • 1...d3!
    • 1.Qh6?
      • threat
        • 2.Qd6#
        • 2.Qe6#
      • 1...d3
        • 2.Qd6#
      • 1...e3
        • 2.Qh1#
        • 2.Qe6#
      • 1...Rd7
        • 2.Qe6#
      • 1...Re7
        • 2.Qd6#
      • 1...Rc6!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Bxc4#
      • 1...Rxc5
        • 2.Sb4#
      • 1...dxc3
        • 2.Qd1#
      • 1...d3
        • 2.Rxd3#
      • 1...f4
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK,XP(F)::S(G)
    • P(b);OGATEB::R(D),XP(b)
    • P(e);OGATEB::QAR(B)
  • Tries
    • Try
      • R(D);
      • Threat
        • B(C),XP(a)
      • Vars
        • R(f);SBLOCK,XP(F)::S(G)
        • P(e);OGATEB::QAR(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(B)
        • R(f);::QAB1(B)
        • R(f);::QAR1(B)
      • Refutation
        • R(f);
  • Actual
    • R(D);
    • Threat
      • B(C),XP(a)
    • Vars
      • R(f);SBLOCK,XP(F)::S(G)
      • P(b);OGATEB,XR(D)::QAR(B)
      • P(b);OGATEB::R(D),XP(b)
      • P(e);OGATEB::QAR(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).