MESON Chess Problem Database

Problem Display
PID: 214677 (8/5pp1/r1Rb3p/Q1p3kP/3P2P1/1N1p1K2/q1b1P1N1/8 w - - 0 1)

Klark, Dmitry Vasilevich

Shakhmatny Listok, 1878

8/5pp1/r1Rb3p/Q1p3kP/3P2P1/1N1p1K2/q1b1P1N1/8

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Qd2#
    • 1...Bf8
      • 2.Qd2#
  • Tries
    • 1.Qd2+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Kf6!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Se4#
      • 1...Kf6
        • 2.Qd8#
      • 1...Bxc5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK,N_PINP(d)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAB1(G),XB(g)
      • Refutation
        • K(e);P_SPINB(g),S_FLIGHT
  • Actual
    • S(C);XP(d)
    • Threat
      • QAR(G)+S(C),DCHECK
    • Vars
      • K(e);P_SPINB(g),S_FLIGHT::QAB(G)
      • B(g);N_GUARD,P_SPINB(g),XS(C)::QAB(G)
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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).