MESON Chess Problem Database

Problem Display
PID: 11139 (rRb5/2PkppRN/pP6/p3K3/6r1/3p3B/8/2Q5 w - - 0 1)

Reynders, Louis Joan Marie

1st Prize, Tijdschrift vd KNSB, 1936

rRb5/2PkppRN/pP6/p3K3/6r1/3p3B/8/2Q5

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qc6#
    • 1...Bb7
      • 2.Sf8#
    • 1...f5
      • 2.Sf6#
    • 1...f6+
      • 2.Sxf6#
  • Tries
    • 1.Bxg4+?
      • 1...Ke8
        • 2.Rg8#
        • 2.Qc6#
      • 1...f5
        • 2.Sf6#
      • 1...e6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qa4#
      • 1...f6+
        • 2.Sxf6#
      • 1...Ke8
        • 2.Qc6#
      • 1...e6
        • 2.Qxe6#
      • 1...Bb7
        • 2.Sf8#
      • 1...a4
        • 2.Qxa4#
      • 1...f5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINR(b),P_SPINB(i),S_FLIGHT::QAB(A)
    • B(i);::S(G)
    • P(g);N_SPINR(b),P_SPINP(f)::S(G)
    • P(g);CHECK,P_SPINP(f)::S(G),XP(g)
  • Tries
    • Try
      • B(B);CHECK,XR(b)
      • Vars
        • P(g);P_SPINP(g)::S(G)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • P(g);CHECK,P_SPINP(f)::S(G),XP(g)
      • K(e);N_SPINR(b),P_SPINB(i),S_FLIGHT::QAB(A)
      • P(f);N_SPINR(b),P_SPINP(g)::QAB1(A),XP(f)
      • B(i);::S(G)
      • P(c);::QAB(A),XP(c)
      • P(g);N_SPINR(b),P_SPINP(f)::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).