MESON Chess Problem Database

Problem Display
PID: 147920 (4nK1B/7p/N1n1p3/RN1k4/p5R1/1q3P2/B3P1Qr/7b w - - 0 1)

Novejarque Iranzo, Francisco

Il Problema, 1931

4nK1B/7p/N1n1p3/RN1k4/p5R1/1q3P2/B3P1Qr/7b

#2

10 + 9

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Bxc4#
      • 2.e4#
    • 1...Sd6
      • 2.Sc3#
      • 2.Sbc7#
    • 1...a3
      • 2.Bxb3#
  • Tries
    • 1.Sa7+?
      • 1...Sxa5
        • 2.Rd4#
      • 1...Kd6!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Rc5#
      • 1...Qxf3+
        • 2.Rf4#
      • 1...Kxc4
        • 2.Sa3#
      • 1...Qxc4
        • 2.e4#
      • 1...Qxb5
        • 2.Rd4#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::B(A),XQ(c)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(f);XR(F)::R1(E)
      • Refutation
        • K(e);N_SPINQ(c),P-FLIGHT
  • Actual
    • R(E);N_PINQ(c)
    • Threat
      • R1(E)
    • Vars
      • Q(c);CHECK,OGATEB,P_SPINQ(c),XP(D)::B(A)+R(E)
      • K(e);P_SPINQ(c),S_FLIGHT,XR(E)::S(G)
      • Q(c);P_SPINQ(c),XR(E)::P(B)
      • Q(c);P_SPINQ(c),XS(G)::B(A)+R(E),DCHECK
      • P(g);OGATEB::QAB(C)
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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).