MESON Chess Problem Database

Problem Display
PID: 177463 (2QK4/1p2pN1p/np6/1p1kPP2/R1p3p1/2PB1p2/5P1q/8 w - - 0 1)

Figueiredo, Jose Miguel Dias

Novis Filho, Mario

Sinfonie Scacchistiche, 1968

2QK4/1p2pN1p/np6/1p1kPP2/R1p3p1/2PB1p2/5P1q/8

#2

9 + 11

1077 Boletim da UBP 1989

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Rd4#
    • 1...bxa4
      • 2.Qxc4#
    • 1...b4
      • 2.Qxc4#
  • Tries
    • 1.Bxc4+?
      • 1...bxc4
        • 2.Qxc4#
      • 1...Ke4!
  • Keys
    • 1.Rxc4!
      • threat
        • 2.Be4#
        • 2.Rd4#
        • 2.Qe6#
        • 2.Qxb7#
        • 2.Qd7#
      • 1...Qxe5
        • 2.Qxb7#
      • 1...Qxf2
        • 2.Be4#
        • 2.Qe6#
        • 2.Qxb7#
        • 2.Qd7#
      • 1...bxc4
        • 2.Qxc4#
      • 1...Qf4
        • 2.Qe6#
        • 2.Qxb7#
        • 2.Qd7#
      • 1...Qh6
        • 2.Be4#
        • 2.Rd4#
      • 1...Sb4
        • 2.Be4#
        • 2.Rd4#
        • 2.Qe6#
        • 2.Qd7#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sc7
        • 2.Qxb7#
        • 2.Qd7#
      • 1...Sb8
        • 2.Be4#
        • 2.Rd4#
        • 2.Qe6#
      • 1...e6
        • 2.Be4#
        • 2.Rd4#
        • 2.Qxe6#
        • 2.Qxb7#
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • P(c);OGATE,XB(C)::R1(D)
    • P(e);N_GUARD,XR(D)::QAB1(H),XP(c)
    • P(e);N_GUARD::QAB1(H),XP(c)
  • Tries
    • Try
      • B(C);CHECK,XP(c)
      • Vars
        • P(e);OGATE,XB(C)::QAB1(H),XP(e)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(D);XP(c)
    • Threat
      • DUALS(5)
    • Vars
      • Q(a);XP(E)::QAB(H),XP(i)
      • P(e);OGATE,XR(D)::QAB1(H),XP(e)
      • S(g);::R1(D)
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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).