MESON Chess Problem Database

Problem Display
PID: 187799 (7b/2K1p3/4p2Q/4k1P1/8/2P1N2p/3P1Nb1/4r3 w - - 0 1)

Ludanyi, Antal

Pesti Naplo, 1909

7b/2K1p3/4p2Q/4k1P1/8/2P1N2p/3P1Nb1/4r3

#2

7 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Qxh2#
  • Tries
    • 1.Qh4?
      • threat
        • 2.Sd3#
        • 2.Qg3#
        • 2.Qd4#
        • 2.d4#
      • 1...Rd1
        • 2.Sd3#
        • 2.Qg3#
        • 2.Qd4#
      • 1...Bf1
        • 2.Qg3#
        • 2.Qd4#
        • 2.Qe4#
        • 2.d4#
      • 1...Be4
        • 2.Qg3#
        • 2.Qxe4#
        • 2.d4#
      • 1...Rxe3!
  • Keys
    • 1.g6!
      • threat
        • 2.Qg5#
      • 1...Kf6
        • 2.Sfg4#
      • 1...Be4
        • 2.Sfg4#
      • 1...Bf6
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::QAB(F),XP(c)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(4)
      • Refutation
        • R(a);XS(D)
  • Actual
    • P(E);
    • Threat
      • QAR2(F)
    • Vars
      • K(d);S_FLIGHT::S(B)
      • B(b);SBLOCK::S(B)
      • B(g);SBLOCK::P(A)
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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).