MESON Chess Problem Database

Problem Display
PID: 158789 (1n2RB2/3P2pq/R1r2kP1/b4N1P/1Pn4P/4p3/B1Q5/2K5 w - - 0 1)

Dulcsan, Geza

Magyar Sakkvilag, 1932

1n2RB2/3P2pq/R1r2kP1/b4N1P/1Pn4P/4p3/B1Q5/2K5

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.d8Q#
      • 2.d8B#
    • 1...Re6
      • 2.Raxe6#
      • 2.Rexe6#
    • 1...Se5
      • 2.Be7#
    • 1...Sb6
      • 2.d8Q#
      • 2.d8B#
    • 1...Sd6
      • 2.Re6#
  • Tries
    • 1.Rxc6+?
      • 1...Sd6
        • 2.Rxd6#
        • 2.Re6#
      • 1...Sxc6!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qf5#
      • 1...Qxg6
        • 2.Qxg6#
      • 1...Qxh5
        • 2.Sxh5#
      • 1...Sb2
        • 2.Qc3#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sa3
        • 2.Qc3#
      • 1...Se5
        • 2.Be7#
      • 1...Sb6
        • 2.d8Q#
        • 2.d8B#
      • 1...Sd6
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);S_CUTB(c)::P=Q
    • S(b);P_PINQ(C),SBLOCK::B(L)
    • S(b);N_SPINR(d),P_PINQ(C),S_CUTB(c)::P=Q
    • S(b);N_SPINR(d),P_PINQ(C),S_CUTR(d)::R1(K)
  • Tries
    • Try
      • R(H);CHECK,XR(d)
      • Refutation
        • S(h);XR(H)
  • Actual
    • S(F);
    • Threat
      • QAR1(C)
    • Vars
      • Q(g);OGATE,XP(I)::QAR1(C),XQ(g)
      • Q(g);XP(G)::S(F),XQ(g)
      • S(b);N_GUARD,P_PINQ(C)::QAB(C)
      • S(b);P_PINQ(C),SBLOCK::B(L)
      • S(b);N_SPINR(d),P_PINQ(C),S_CUTB(c)::P=Q
      • S(b);N_SPINR(d),P_PINQ(C),S_CUTR(d)::R1(K)
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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).