MESON Chess Problem Database

Problem Display
PID: 96778 (B2Q3n/8/2r5/Rb1P2N1/2k5/1pP1B3/4K3/b1R5 w - - 0 1)

van Beek, Huibrecht

van Dijk, Nils Gustav Gerard

The Chess Problem, 1946

B2Q3n/8/2r5/Rb1P2N1/2k5/1pP1B3/4K3/b1R5

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sd2#
        • 2.Se5#
      • 1...b2
        • 2.Sd2#
      • 1...Re6
        • 2.Sd2#
      • 1...Sg6
        • 2.Sd2#
      • 1...Sf7
        • 2.Sd2#
      • 1...Bxc3!
    • 1.Qe7?
      • threat
        • 2.Qe4#
      • 1...Kxd5+
        • 2.c4#
      • 1...Re6
        • 2.Qb4#
        • 2.Qc5#
      • 1...b2!
    • 1.dxc6?
      • threat
        • 2.Qd3#
        • 2.Qd4#
      • 1...Bxc3
        • 2.Qd4#
      • 1...b2!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qxb5#
      • 1...Kxd5+
        • 2.c4#
      • 1...Rc5
        • 2.Qf4#
      • 1...Rb6
        • 2.Qf4#
      • 1...Ba4
        • 2.Qf4#
        • 2.Qb4#
      • 1...Ba6
        • 2.Qf4#
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::S(G)
        • R(e);P_PINB(D)::S(G)
        • S(f);::S(G)
      • Refutation
        • B(a);P_SPINB(a),XP(C)
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • K(c);CHECK,OGATE,P_SPINB(d),P_SPINR(e),S_FLIGHT,XP(F)::P(C)
      • Refutation
        • P(b);
    • Try
      • P(F);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);P_SPINB(a),XP(C)::QAR1(I)
      • Refutation
        • P(b);
  • Actual
    • Q(I);
    • Threat
      • QAB1(I),XB(d)
    • Vars
      • K(c);CHECK,OGATE,P_SPINB(d),P_SPINR(e),S_FLIGHT,XP(F)::P(C)
      • R(e);::QAR(I)
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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).