MESON Chess Problem Database

Problem Display
PID: 63402 (B2b1R2/5q1r/2R5/2N1B3/1N1PP1Pp/5k1P/5P2/5K2 w - - 0 1)

Kapralos, Demetrius N

Siotis, Nikos

Scacchi e Scienze Applicate, 1987

B2b1R2/5q1r/2R5/2N1B3/1N1PP1Pp/5k1P/5P2/5K2

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qf5
      • 2.Rxf5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
        • 2.Rc3#
      • 1...Kxe4
        • 2.Sd2#
      • 1...Bg5!
    • 1.Sd7?
      • threat
        • 2.Rc3#
      • 1...Kxe4
        • 2.Re6#
      • 1...Bg5!
    • 1.Rxf7+?
      • 1...Bf6
        • 2.Rcxf6#
        • 2.Rfxf6#
      • 1...Rxf7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rc3#
      • 1...Kxe4
        • 2.Rc7#
      • 1...Bg5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(c);OGATE::R1(L),XQ(c)
    • Q(c);OGATE::R(L),XQ(c)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_SPINQ(c),P_PINP(B),S_FLIGHT,XP(F)::S(H)
      • Refutation
        • B(e);
    • Try
      • S(H);
      • Threat
        • R(J)
      • Vars
        • K(a);N_SPINQ(c),OGATEB,P_PINP(B),S_FLIGHT,XP(F)::B(K)+R(J)
      • Refutation
        • B(e);
    • Try
      • R(L);CHECK,XQ(c)
      • Refutation
        • R(d);XR(L)
  • Actual
    • S(H);
    • Threat
      • R(J)
    • Vars
      • K(a);N_SPINQ(c),OGATEB,P_PINP(B),S_FLIGHT,XP(F)::B(K)+R(J)
      • B(e);N_GUARD::S(H),XB(e)
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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).