MESON Chess Problem Database

Problem Display
PID: 203362 (8/4p1Q1/7K/3B1p2/2Rn1k2/1p6/pqpP4/b1B4n w - - 0 1)

van Dijk, Johannes

De Maasbode, 1924

8/4p1Q1/7K/3B1p2/2Rn1k2/1p6/pqpP4/b1B4n

#2

6 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.dxc3#
    • 1...e5
      • 2.Qg5#
  • Tries
    • 1.Qxd4+?
      • 1...Kg3
        • 2.Qh4#
      • 1...Qxd4!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qxd4#
      • 1...Qxc3
        • 2.dxc3#
      • 1...Sf2
        • 2.Qg3#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Se2
        • 2.Rf3#
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sb5
        • 2.Rf3#
      • 1...Sc6
        • 2.Rf3#
      • 1...Se6
        • 2.Rf3#
      • 1...e5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(d);OGATE::B(A)+P(B),XQ(d)
    • P(j);SBLOCK::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK,XS(g)
      • Vars
        • K(h);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • Q(d);P_SPINQ(d),XQ(F)
  • Actual
    • R(C);N_PINS(g)
    • Threat
      • QAR2(F),XS(g)
    • Vars
      • Q(d);OGATE,XR(C)::B(A)+P(B),XQ(d)
      • S(b);N_GUARD::QAB1(F)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • S(g);N_GUARD::R1(C)
      • S(g);N_GUARD::R1(C),XS(g)
      • P(j);SBLOCK::QAB1(F)
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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).