MESON Chess Problem Database

Problem Display
PID: 17724 (2r1N3/4n2b/2Qp1p2/Rnb1kppR/1B1N4/3PP1P1/2B5/2K5 w - - 0 1)

Lender, Baruch

Basha'ar, 1949

2r1N3/4n2b/2Qp1p2/Rnb1kppR/1B1N4/3PP1P1/2B5/2K5

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qxd6#
    • 1...Bb6
      • 2.Bxd6#
      • 2.Qxd6#
    • 1...Ba7
      • 2.Bxd6#
      • 2.Qxd6#
    • 1...Sa3
      • 2.Qxd6#
    • 1...Sc3
      • 2.Qxd6#
    • 1...Sxd4
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qxd6#
    • 1...Sc7
      • 2.Qxd6#
    • 1...f4
      • 2.gxf4#
    • 1...g4
      • 2.Qe4#
    • 1...d5
      • 2.Sf3#
      • 2.Qe6#
      • 2.Qxf6#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Bxd4
        • 2.Qxd6#
      • 1...Sxd4
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qxd6#
      • 1...Bg8!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Sf3#
      • 1...Bxd4
        • 2.Bxd6#
      • 1...Sxd4
        • 2.Qxd6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...f4
        • 2.gxf4#
      • 1...g4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(b);N_GUARD,P_SPINS(a),XS(G)::QAB1(J),XP(f)
    • S(a);N_GUARD,P_SPINB(b)::QAB1(J),XP(f)
    • S(a);N_GUARD,P_SPINB(b),XS(G)::QAB1(J),XP(f)
    • P(d);OGATE,P_SPINP(e)::P(E),XP(d)
    • P(e);P_SPINP(d)::QAR1(J)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(f)::QAB1(J)
        • B(b);N_GUARD,P_PINB(B),P_SPINS(a),XS(G)::QAB1(J),XP(f)
        • S(a);N_GUARD,P_SPINB(b),XS(G)::QAB1(J),XP(f)
        • S(a);N_GUARD,P_SPINB(b)::QAB1(J),XP(f)
      • Refutation
        • B(i);
  • Actual
    • B(B);
    • Threat
      • S(G)
    • Vars
      • B(b);OGATE,P_PINQ(J),P_SPINS(a),XS(G)::B(F),XP(f)
      • S(a);N_GUARD,P_SPINB(b),XS(G)::QAB1(J),XP(f)
      • S(h);N_GUARD::QAR1(J),XS(h)
      • P(d);OGATE,P_SPINP(e)::P(E),XP(d)
      • P(e);P_SPINP(d)::QAR1(J)
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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).