MESON Chess Problem Database

Problem Display
PID: 174028 (5rQ1/4p2b/4P3/2B1p2N/2pPk3/4pR1n/4B3/2K5 w - - 0 1)

Bottacchi, Antonio

Illustrazione Popolare, 1917

5rQ1/4p2b/4P3/2B1p2N/2pPk3/4pR1n/4B3/2K5

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qa8#
    • 1...Rf6
      • 2.Qa8#
    • 1...Rf7
      • 2.Qa8#
    • 1...Ra8
      • 2.Qxa8#
  • Tries
    • 1.Sf6+?
      • 1...Rxf6
        • 2.Qa8#
      • 1...exf6!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Rxe5#
      • 1...Kd5
        • 2.Bf3#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Rxf5
        • 2.Qa8#
      • 1...Bxf5
        • 2.Qg2#
      • 1...exd4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(h);OGATE::QAB(H)
    • R(h);OGATE::QAB(H),XR(h)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(h);OGATE,XS(F)::QAB(H)
      • Refutation
        • P(f);XS(F)
  • Actual
    • R(C);
    • Threat
      • R1(C),XP(e)
    • Vars
      • K(d);P_SPINP(e),S_FLIGHT::B(B)
      • K(d);S_FLIGHT,XR(C)::QAB1(H)
      • R(h);OGATE,SBLOCK,XR(C)::QAB(H)
      • B(g);SBLOCK,XR(C)::QAB(H)
      • P(e);XP(D)::S(F)
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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).