MESON Chess Problem Database

Problem Display
PID: 164916 (8/b2prN2/6p1/1P3b1r/B4Q1q/1P1k2Pp/1B2N3/2K1R3 w - - 0 1)

Sardella, Giuseppe

Comm., Best Problems, 2016

8/b2prN2/6p1/1P3b1r/B4Q1q/1P1k2Pp/1B2N3/2K1R3

#2

10 + 9

4901 Best Problems 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4+
      • 2.Sxf4#
    • 1...Re4
      • 2.Qd2#
    • 1...Re5
      • 2.Sxe5#
    • 1...Be4
      • 2.Qd2#
  • Tries
    • 1.Qf3+?
      • 1...Re3
        • 2.Se5#
        • 2.Rd1#
      • 1...Be3+!
  • Keys
    • 1.b6!
      • threat
        • 2.Bb5#
      • 1...Qxf4+
        • 2.Sxf4#
      • 1...Re4
        • 2.Qd2#
      • 1...Re5
        • 2.Sxe5#
      • 1...Be4
        • 2.Qd2#
      • 1...Bg4
        • 2.Qd4#
      • 1...Be6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,XQ(H)::S(D),XQ(c)
    • R(i);SBLOCK::QAR1(H)
    • R(i);N_GUARD::S(J),XR(i)
    • B(d);SBLOCK::QAR1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • B(g);CHECK,P_SPINB(g)
  • Actual
    • P(I);
    • Threat
      • B(G)
    • Vars
      • Q(c);CHECK,XQ(H)::S(D),XQ(c)
      • R(i);SBLOCK::QAR1(H)
      • R(i);N_GUARD::S(J),XR(i)
      • B(d);SBLOCK::QAR1(H)
      • B(d);S_CUTQ(c)::QAR1(H)
      • B(d);S_CUTR(i)::QAR2(H)
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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).