MESON Chess Problem Database

Problem Display
PID: 192910 (2Qbk3/4p1K1/5pp1/5NP1/3pb3/8/4R3/4q3 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2019

2Qbk3/4p1K1/5pp1/5NP1/3pb3/8/4R3/4q3

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sd6#
      • 2.Qc6#
    • 1...Bh1
      • 2.Sd6#
    • 1...Bc2
      • 2.Sd6#
      • 2.Qc6#
    • 1...Bg2
      • 2.Sd6#
    • 1...Bd3
      • 2.Sd6#
      • 2.Qc6#
    • 1...Bf3
      • 2.Sd6#
    • 1...Bd5
      • 2.Sd6#
    • 1...Bc6
      • 2.Sd6#
      • 2.Qxc6#
    • 1...Bb7
      • 2.Sd6#
    • 1...Ba8
      • 2.Sd6#
  • Tries
    • 1.Rxe4?
      • threat
        • 2.Sd6#
        • 2.Qc6#
      • 1...gxf5
        • 2.Qc6#
      • 1...Qc3
        • 2.Sd6#
        • 2.Rxe7#
      • 1...Qg3
        • 2.Rxe7#
        • 2.Qc6#
      • 1...Qb4
        • 2.Qc6#
      • 1...Qc1
        • 2.Sd6#
        • 2.Rxe7#
      • 1...e5
        • 2.Qc6#
      • 1...e6
        • 2.Qc6#
      • 1...Qxe4!
  • Keys
    • 1.gxf6!
      • threat
        • 2.f7#
      • 1...exf6
        • 2.Qc6#
      • 1...Bd5
        • 2.Sd6#

This is a version of 192909

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(c);P_SPINP(f)::S(B)
  • Tries
    • Try
      • R(A);P_PINP(f),XB(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XS(B)::QAB(E)
        • Q(a);::QAB(E)
        • P(f);::QAB(E)
      • Refutation
        • Q(a);N_SPINP(f),XR(A)
  • Actual
    • P(C);XP(d)
    • Threat
      • P(C)
    • Vars
      • P(f);N_SPINB(g),P_SPINB(c),XP(C)::QAB(E)
      • B(c);P_SPINP(f)::S(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).