MESON Chess Problem Database

Problem Display
PID: 218574 (2K2b2/2pPRPrp/4pkpP/4r3/6Q1/2R1P3/1B6/8 w - - 0 1)

Cook, Eugene Beauharnais

Baltimore Sunday News, 1882

2K2b2/2pPRPrp/4pkpP/4r3/6Q1/2R1P3/1B6/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qxe6#
    • 1...Rg8
      • 2.fxg8S#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Rcxe6#
      • 1...Bxe7
        • 2.Qf4#
      • 1...Kxe7!
    • 1.Qf4+?
      • 1...Kxe7
        • 2.d8Q#
      • 1...Rf5!
  • Keys
    • 1.Rxc7!
      • 1...Kxe7
        • 2.d8Q#
      • 1...Rxf7
        • 2.Rxe6#
      • 1...Bxe7
        • 2.Qf4#
      • 1...g5
        • 2.Qxe6#
      • 1...Rg8
        • 2.fxg8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD,SBLOCK::QAR1(D),XP(b)
    • R(f);OGATE::PXR(f)=S
  • Tries
    • Try
      • R(B);P_PINP(b),P_PINR(a)
      • Threat
        • R1(B),XP(b)
      • Vars
        • B(h);SBLOCK,XR(G)::QAR2(D)
      • Refutation
        • K(c);N_SPINP(b),N_SPINR(a),S_FLIGHT,XR(G)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(G)::P=Q
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • R(B);P_PINR(a),XP(e)
    • Vars
      • K(c);N_SPINR(a),S_FLIGHT,XR(G)::P=Q
      • R(f);SBLOCK,XP(H)::R1(G),XP(b)
      • B(h);SBLOCK,XR(G)::QAR2(D)
      • P(d);SBLOCK::QAR1(D),XP(b)
      • R(f);OGATE::PXR(f)=S
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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).