MESON Chess Problem Database

Problem Display
PID: 235644 (b4r2/6N1/1p1B3R/1PQn4/K1N3k1/2pR1p1p/8/2b4r w - - 0 1)

Groeneveld, Cornelis

Norsk Sjakkblad, 1956

b4r2/6N1/1p1B3R/1PQn4/K1N3k1/2pR1p1p/8/2b4r

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qxg1#
    • 1...Se3
      • 2.Qh5#
    • 1...Sb4
      • 2.Qh5#
    • 1...Sf6
      • 2.Qf5#
    • 1...Sc7
      • 2.Qh5#
    • 1...Se7
      • 2.Qh5#
    • 1...f2
      • 2.Rg3#
  • Tries
    • 1.Rg6+?
      • 1...Kh4
        • 2.Bg3#
        • 2.Qf2#
      • 1...Bg5!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qg3#
        • 2.Qh4#
      • 1...Kg5
        • 2.Qh4#
      • 1...Bxh6
        • 2.Qg3#
      • 1...Rg1
        • 2.Qxg1#
        • 2.Qh4#
      • 1...Rf4
        • 2.Rg6#
        • 2.Qh4#
      • 1...Bf4
        • 2.Qh4#
      • 1...Bg5
        • 2.Qg3#
      • 1...Sf4
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::QAR(E),XR(b)
    • S(g);OGATE::QAB1(E)
    • P(d);OGATE::R1(A)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(f);P-FLIGHT::QAB1(E)
      • B(a);XR(G)::QAR1(E)
      • B(a);::QAR1(E)
      • B(a);SBLOCK::QAR1(E)
      • S(g);::QAR1(E)
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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).