MESON Chess Problem Database

Problem Display
PID: 203368 (1n6/8/p5R1/1Pk2B2/2Pp3R/5p2/N3P3/b1Q1n2K w - - 0 1)

van Dijk, Johannes

Falkirk Herald, 1924

1n6/8/p5R1/1Pk2B2/2Pp3R/5p2/N3P3/b1Q1n2K

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Rxc6#
    • 1...Sd7
      • 2.Rc6#
    • 1...d3
      • 2.Qa3#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Rh5#
        • 2.Qa3#
        • 2.Qg5#
      • 1...axb5
        • 2.Rh5#
        • 2.Qg5#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Bb2
        • 2.Rh5#
        • 2.Qg5#
      • 1...Bc3
        • 2.Rh5#
        • 2.Qg5#
      • 1...Sc2
        • 2.Rh5#
        • 2.Qg5#
      • 1...Sd7
        • 2.Rc6#
        • 2.Qa3#
      • 1...Sxd3!
    • 1.Rh5?
      • threat
        • 2.Bb1#
        • 2.Bd3#
        • 2.Bh3#
        • 2.Be4#
        • 2.Bg4#
        • 2.Bd7#
        • 2.Bc8#
      • 1...Bc3
        • 2.Bd3#
      • 1...Sc2
        • 2.Bd3#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Sd7
        • 2.Bxd7#
        • 2.Rc6#
      • 1...d3!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Bd3#
      • 1...Kxc4
        • 2.Be6#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Sd7
        • 2.Rc6#
      • 1...d3
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD::R1(I),XS(g)
    • S(g);N_GUARD::R1(I)
    • P(d);::QAB(A)
  • Tries
    • Try
      • B(H);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);N_GUARD::R1(I),XS(g)
      • Refutation
        • S(b);XB(H)
    • Try
      • R(F);
      • Threat
        • DUALS(7)
      • Vars
        • B(a);::R(F)+B(H)
        • S(b);::R(F)+B(H)
        • S(g);N_GUARD::R1(I),XS(g)
        • S(b);::R(F)+B(H),XS(b)
      • Refutation
        • P(d);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+B(H)
    • Vars
      • K(e);P-FLIGHT,P_SPINP(d),XP(E)::B(H)
      • S(g);N_GUARD::R1(I),XS(g)
      • S(b);::QAR(A)+B(H),XS(b)
      • S(g);N_GUARD::R1(I)
      • P(d);::QAB(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).