MESON Chess Problem Database

Problem Display
PID: 270816 (2q1n3/1p2Q1N1/2p2p1r/B1p1N3/n2k1P2/r3pP1b/B3P3/4K3 w - - 0 1)

Maleika, Gerhard

Garzon-60 JT (Problemas), 2023

2q1n3/1p2Q1N1/2p2p1r/B1p1N3/n2k1P2/r3pP1b/B3P3/4K3

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sxg7
      • 2.Qd6#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Qe4#
      • 1...Qf5
        • 2.Sxf5#
      • 1...Qe6
        • 2.Sxe6#
      • 1...Sc3
        • 2.Qxe3#
      • 1...Sd6
        • 2.Qxd6#
      • 1...f5
        • 2.Qe5#
      • 1...c4!
    • 1.Sxc6+?
      • 1...bxc6
        • 2.Qe4#
      • 1...Qxc6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qe4#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Be6
        • 2.Sxe6#
      • 1...Sc3
        • 2.Qxc5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(l);N_GUARD::QAR2(H),XS(l)
    • S(l);N_GUARD,XS(I)::QAR2(H)
    • P(h);OGATE,XS(G)::QAB1(H),XP(h)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(H)
      • Vars
        • Q(k);N_GUARD::S(I),XQ(k)
        • S(d);S_CUTR(a)::QAB1(H),XP(b)
        • S(l);N_GUARD::QAR2(H),XS(l)
        • P(h);N_GUARD::QAB1(H)
      • Refutation
        • P(f);
    • Try
      • S(G);CHECK,XP(g)
      • Vars
        • P(j);XS(G)::QAR1(H)
      • Refutation
        • Q(k);XS(G)
  • Actual
    • S(G);
    • Threat
      • QAR1(H)
    • Vars
      • B(c);N_GUARD::S(I),XB(c)
      • S(d);N_GUARD::QAB1(H),XP(f)
      • S(l);N_GUARD::QAR2(H),XS(l)
      • P(h);N_GUARD::QAB1(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).