MESON Chess Problem Database

Problem Display
PID: 91928 (3KQ3/4p1p1/1pR5/1p1kPb2/1P4q1/1NP1R3/B5r1/3r4 w - - 0 1)

Kiss, Janos

Schach, 1955

3KQ3/4p1p1/1pR5/1p1kPb2/1P4q1/1NP1R3/B5r1/3r4

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sd2#
    • 1...Qh3
      • 2.Sd2#
    • 1...Qh5
      • 2.Sd2#
    • 1...Qg3
      • 2.Sd2#
    • 1...Qg5
      • 2.Sd2#
    • 1...Qg6
      • 2.Sd2#
    • 1...Rg1
      • 2.Sd4#
    • 1...Rg3
      • 2.Sd4#
    • 1...e6
      • 2.Qd7#
  • Tries
    • 1.Rc5+?
      • 1...Ke6+
        • 2.Sd4#
      • 1...bxc5!
    • 1.Rd6+?
      • 1...Kc4
        • 2.Sd2#
        • 2.Sa5#
        • 2.Qc6#
      • 1...exd6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qc6#
      • 1...Kc4+
        • 2.Sd2#
      • 1...Kxe6+
        • 2.Sd4#
      • 1...Bxe6
        • 2.Qxb5#
      • 1...Qc4
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::B(A)+S(B)
    • R(b);N_GUARD::B(A)+S(B)
    • P(h);S_CUTB(f)::QAR2(I)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);CHECK,P_SPINP(h),S_FLIGHT::B(A)+S(B),DCHECK
      • Refutation
        • P(g);XR(G)
    • Try
      • R(G);CHECK
      • Refutation
        • P(h);XR(G)
  • Actual
    • R(G);
    • Threat
      • QAB1(I)
    • Vars
      • K(e);CHECK,S_FLIGHT::B(A)+S(B),DCHECK
      • K(e);CHECK,P_SPINP(h),S_FLIGHT,XR(G)::B(A)+S(B),DCHECK
      • B(f);SBLOCK,XR(G)::QAR2(I),XP(d)
      • Q(c);SBLOCK::QAR2(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).