MESON Chess Problem Database

Problem Display
PID: 196761 (5br1/2rN1p2/R1qk2bR/n7/1P1p3B/2NQ3B/2K5/8 w - - 0 1)

Novejarque Iranzo, Francisco

5th HM., Spanish National Ty., 1919

5br1/2rN1p2/R1qk2bR/n7/1P1p3B/2NQ3B/2K5/8

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Bg3#
  • Tries
    • 1.Rxg6+?
      • 1...Rxg6
        • 2.Qxd4#
      • 1...fxg6
        • 2.Qg3#
        • 2.Qxd4#
      • 1...f6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Bg3#
      • 1...d3+
        • 2.Qxd3#
      • 1...Bxh6
        • 2.Be7#
      • 1...f5
        • 2.Qd5#
      • 1...Bg7
        • 2.Be7#
      • 1...Sc4
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(h);SBLOCK::B(F)
  • Tries
    • Try
      • R(H);CHECK,N_SPINQ(C),XB(e)
      • Vars
        • R(i);XR(H)::QAR2(C),XP(a)
      • Refutation
        • P(g);
  • Actual
    • Q(C);N_PINP(a)
    • Threat
      • B(F)
    • Vars
      • P(a);CHECK,N_PINQ(C)::QAR(C),XP(a)
      • B(h);N_GUARD,N_SPINB(e),XR(H)::B(F)
      • P(g);N_PINQ(C)::QAR1(C)
      • B(h);N_GUARD::B(F)
      • S(b);N_PINS(B)::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).