MESON Chess Problem Database

Problem Display
PID: 101605 (K2nQ3/2Pr1P2/Np1p4/1Rb5/pr2p3/Nk3bR1/p1qP4/n1BB4 w - - 0 1)

Casa, Alex

diagrammes, 2002

K2nQ3/2Pr1P2/Np1p4/1Rb5/pr2p3/Nk3bR1/p1qP4/n1BB4

#2

11 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Rxb4#
    • 1...Bf2
      • 2.Rxb4#
    • 1...Be3
      • 2.Rxb4#
    • 1...Bd4
      • 2.Rxb4#
  • Tries
    • 1.Qh8?
      • threat
        • 2.Qb2#
        • 2.Qc3#
      • 1...Bd4
        • 2.Rxb4#
      • 1...e3+!
  • Keys
    • 1.Qxe4!
      • threat
        • 2.Qd5#
      • 1...Be3
        • 2.Rxb4#
      • 1...d5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(i);N_GUARD::R1(F),XR(g)
    • B(i);N_GUARD,N_SPINB(e)::R1(F),XR(g)
  • Tries
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);N_GUARD::R1(F),XR(g)
      • Refutation
        • P(h);CHECK,N_SPINB(e)
  • Actual
    • Q(K);P_SPINQ(K),XP(h)
    • Threat
      • QAB(K)
    • Vars
      • B(i);N_GUARD,N_SPINB(e)::R1(F),XR(g)
      • P(k);N_PINQ(K)::QAR2(K)
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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).