MESON Chess Problem Database

Problem Display
PID: 263136 (3N1Qn1/1pB1pp2/bP2P3/K1kpR3/8/pP2P3/r1N5/8 w - - 0 1)

Ersek, Tibor

4th Comm., SuperProblem, 2021

3N1Qn1/1pB1pp2/bP2P3/K1kpR3/8/pP2P3/r1N5/8

#2

10 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.b4#
    • 1...Sf6
      • 2.Qxe7#
    • 1...Sh6
      • 2.Qxe7#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Rxd5#
      • 1...fxe6
        • 2.Sxe6#
      • 1...Bc4
        • 2.Sxb7#
      • 1...Sf6
        • 2.Qxe7#
      • 1...Rd2!
  • Keys
    • 1.e4!
      • threat
        • 2.Rxd5#
      • 1...fxe6
        • 2.Qf2#
      • 1...Bc4
        • 2.b4#
      • 1...Sf6
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK::P(B)
    • S(i);N_GUARD::QAB(J),XP(g)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(E),XP(d)
      • Vars
        • P(h);XP(G)::S(I),XP(h)
        • B(e);N_GUARD::S(I),XP(f)
        • S(i);N_GUARD::QAB(J),XP(g)
      • Refutation
        • R(a);
  • Actual
    • P(C);
    • Threat
      • R1(E),XP(d)
    • Vars
      • P(h);OGATE,XP(G)::QAB(J)
      • B(e);SBLOCK::P(B)
      • S(i);N_GUARD::QAB(J),XP(g)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).