MESON Chess Problem Database

Problem Display
PID: 263247 (2n3B1/2Qp4/1p2N2K/qR1ppkPp/1n6/1Rb5/1r2PN2/8 w - - 0 1)

Golab, Marian

4th Comm., Szachy, 1984

2n3B1/2Qp4/1p2N2K/qR1ppkPp/1n6/1Rb5/1r2PN2/8

#2

9 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rf3#
    • 1...Bd4
      • 2.Rf3#
    • 1...d4
      • 2.Qxe5#
    • 1...e4
      • 2.Qf4#
    • 1...dxe6
      • 2.Qf7#
    • 1...d6
      • 2.Qf7#
      • 2.Qh7#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Sd6
        • 2.Qf6#
      • 1...Se7
        • 2.Qf8#
      • 1...e4!
    • 1.e3?
      • threat
        • 2.Sg7#
      • 1...dxe6
        • 2.Bh7#
        • 2.Qf7#
        • 2.Qh7#
      • 1...e4
        • 2.Qf4#
      • 1...Rxf2!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sg7#
      • 1...dxc4
        • 2.e4#
      • 1...dxe6
        • 2.Bh7#
      • 1...e4
        • 2.Qxe4#
      • 1...Bd4
        • 2.Rf3#
      • 1...d4
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(b);OGATE::R(C)
    • P(e);P_SPINP(f),S_CUTB(b)::QAR1(H),XP(f)
    • P(f);OGATE,P_SPINP(e)::QAR1(H)
    • P(j);OGATE,XS(F)::QAR2(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(k);::QAR1(H)
        • S(k);::QAR(H)
      • Refutation
        • P(f);P_SPINP(e)
    • Try
      • P(A);
      • Threat
        • S(F)
      • Vars
        • P(f);OGATE,P_SPINP(e)::QAR1(H)
      • Refutation
        • R(a);XS(B)
  • Actual
    • Q(H);
    • Threat
      • S(F)
    • Vars
      • P(e);N_GUARD,P_SPINP(f),XQ(H)::P(A)
      • P(j);SBLOCK,XS(F)::B(I)
      • P(f);P_SPINP(e)::QAB1(H),XP(f)
      • B(b);OGATE::R(C)
      • P(e);P_SPINP(f)::B(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).