MESON Chess Problem Database

Problem Display
PID: 134230 (6B1/3NRr2/2p1p1p1/2P3B1/1K1NkrbP/2Qp4/1nPpPR2/5q2 w - - 0 1)

McDowell, Michael

Harrogate, 2009

6B1/3NRr2/2p1p1p1/2P3B1/1K1NkrbP/2Qp4/1nPpPR2/5q2

#2

12 + 11

56 The Problemist 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Rxe5#
  • Tries
    • 1.Rxe6+?
      • 1...Kd5
        • 2.Sb6#
        • 2.Re5#
      • 1...Bxe6!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Qe5#
      • 1...Ke3+
        • 2.Qd4#
      • 1...Kd5+
        • 2.Sxf4#
      • 1...Kf5+
        • 2.Sd4#
      • 1...R4f5
        • 2.Qd4#
      • 1...R7f5
        • 2.Qd4#
      • 1...Sc4
        • 2.Qxd3#

This is a version of 134229

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(i);OGATE::R1(K),XP(i)
  • Tries
    • Try
      • R(K);CHECK,XP(i)
      • Refutation
        • B(g);XR(K)
  • Actual
    • S(F);XP(i)
    • Threat
      • QAR1(D)
    • Vars
      • K(e);CHECK,P-FLIGHT,P_SPINP(d),P_SPINR(f)::QAB1(D)
      • K(e);CHECK,S_FLIGHT::S(F),XR(f)
      • K(e);CHECK,P_SPINR(f),S_FLIGHT::S(F)
      • R(f);::QAR1(D)
      • R(k);SBLOCK::QAR1(D)
      • S(b);N_GUARD::QAB1(D),XP(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).