MESON Chess Problem Database

Problem Display
PID: 44784 (2B5/4pp2/2p3q1/2p1kr2/2P1N1b1/2p2pNp/5P1B/QK1R4 w - - 0 1)

Arguelles Ferrer, Antonio Fernandez

Recomm., BCF 043. Ty., 1942-1943

2B5/4pp2/2p3q1/2p1kr2/2P1N1b1/2p2pNp/5P1B/QK1R4

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qxc3#
  • Tries
    • 1.Se2+?
      • 1...Kxe4
        • 2.Sxc3#
      • 1...Rf4!
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Sce2#
      • 1...Rf4+
        • 2.Sce4#
      • 1...Rg5+
        • 2.Sge4#
      • 1...Rh5+
        • 2.Sge4#
      • 1...Rf6+
        • 2.Sf5#
      • 1...Kf4
        • 2.Sge4#
      • 1...Kf6
        • 2.Sce4#
      • 1...Qd6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(g);P_PINS(H),SBLOCK::QAB(A),XP(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);N_SPINP(a),P-FLIGHT,XS(H)::S(F),XP(a)
      • Refutation
        • R(g);P_PINS(H),P_SPINR(g)
  • Actual
    • S(H);XP(a)
    • Threat
      • QAB(A)+S(H)
    • Vars
      • R(g);CHECK,SBLOCK::QAB(A)+S(H)
      • R(g);CHECK,N_GUARD::B(E)+S(F)
      • R(g);CHECK,SBLOCK::B(E)+S(F)
      • K(f);S_FLIGHT::B(E)+S(F)
      • K(f);S_FLIGHT::QAB(A)+S(H),DCHECK
      • Q(i);SBLOCK::QAB(A)+S(H)
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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).