MESON Chess Problem Database

Problem Display
PID: 199354 (6k1/PpKN1p1p/8/2pBB2p/r3QN2/1nr1R3/q1b4p/n1b2R2 w - - 0 1)

Shanshin, Valery Yurevich

The Problemist, 2019

6k1/PpKN1p1p/8/2pBB2p/r3QN2/1nr1R3/q1b4p/n1b2R2

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qg2#
    • 1...Rcc4
      • 2.Rg3#
    • 1...Bd3
      • 2.Rg3#
    • 1...Sa5
      • 2.a8Q#
      • 2.a8R#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Se7#
        • 2.Bxf7#
      • 1...h6
        • 2.Se7#
      • 1...Sd2
        • 2.Se7#
      • 1...Sd4
        • 2.Se7#
      • 1...Sa5
        • 2.Se7#
        • 2.a8Q#
        • 2.a8R#
      • 1...hxg6!
    • 1.Qf5?
      • threat
        • 2.Bxf7#
        • 2.Qxf7#
      • 1...Rxf4
        • 2.Bxf7#
      • 1...Sd2
        • 2.Qxf7#
      • 1...Sd4
        • 2.Qxf7#
      • 1...Sa5
        • 2.Qxf7#
        • 2.a8Q#
        • 2.a8R#
      • 1...Bxf5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Bxf7#
      • 1...Sd2
        • 2.Rg3#
      • 1...Sd4
        • 2.Qg2#
      • 1...Sa5
        • 2.a8Q#
        • 2.a8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(g);S_CUTB(d)::QAR(C)
    • R(g);N_GUARD::R(B)
    • B(d);S_CUTR(g)::R(B)
    • S(f);S_CUTR(h)::P=Q
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(m);::S(D)
        • S(f);::S(D)
      • Refutation
        • P(m);XS(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XS(D)::B(E),XP(l)
        • S(f);::QAB1(C),XP(l)
      • Refutation
        • B(d);XQ(C)
  • Actual
    • S(D);
    • Threat
      • B(E),XP(l)
    • Vars
      • S(f);S_CUTB(b)::R(B)
      • S(f);S_CUTR(h)::QAR(C)
      • S(f);S_CUTR(h)::P=Q
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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).