MESON Chess Problem Database

Problem Display
PID: 193564 (2b5/8/1b2pp2/k7/PN5Q/8/p2NP3/2RB1K2 w - - 0 1)

van Dijk, Johannes

De Maasbode, 1915

2b5/8/1b2pp2/k7/PN5Q/8/p2NP3/2RB1K2

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Sc6#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Sc6#
        • 2.Qb5#
      • 1...Bg1
        • 2.Qb5#
      • 1...Bf2
        • 2.Qb5#
      • 1...Be3
        • 2.Qb5#
      • 1...Bd4
        • 2.Qb5#
      • 1...Bc5
        • 2.Qb5#
        • 2.Qxc5#
      • 1...Ba7
        • 2.Qb5#
      • 1...Bc7
        • 2.Qb5#
        • 2.Qc5#
      • 1...Bd8
        • 2.Qb5#
        • 2.Qc5#
      • 1...Ba6
        • 2.Sc6#
      • 1...Bb7
        • 2.Qb5#
      • 1...Bd7!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sc4#
      • 1...Kxb4
        • 2.Sb1#
      • 1...Ba6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(f);P_PINP(E),SBLOCK::S(G)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR1(H)
        • B(f);::S(G)
        • B(f);::QAR1(H)
      • Refutation
        • B(f);
  • Actual
    • Q(H);
    • Threat
      • S(D)
    • Vars
      • K(b);S_FLIGHT,XS(G)::QAB(H)+S(D)
      • B(f);P_PINP(E),SBLOCK::S(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).