MESON Chess Problem Database

Problem Display
PID: 253660 (3K4/2n5/3kb3/1P3pN1/3P4/2r1P1b1/B1Q5/3n1r2 w - - 0 1)

Gajevskis, A

Sachmatija, 2021

3K4/2n5/3kb3/1P3pN1/3P4/2r1P1b1/B1Q5/3n1r2

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qc5#
      • 2.Qc6#
      • 2.Qxc7#
    • 1...Rb3
      • 2.Qc5#
      • 2.Qc6#
    • 1...Rd3
      • 2.Qc5#
      • 2.Qc6#
      • 2.Qxc7#
    • 1...Rxe3
      • 2.Qc5#
      • 2.Qc6#
      • 2.Qxc7#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rc6
      • 2.Qxc6#
    • 1...Bd7
      • 2.Sf7#
    • 1...Bf7
      • 2.Sxf7#
    • 1...Bc8
      • 2.Sf7#
    • 1...f4
      • 2.Se4#
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Se4#
      • 1...Rxe3
        • 2.Qc5#
      • 1...Bxf5
        • 2.Sf7#
      • 1...Sxb5
        • 2.Qxe6#
      • 1...Rf4
        • 2.Qe5#
      • 1...Bh4
        • 2.Qe5#
      • 1...Bd5
        • 2.Qd7#
      • 1...Sf2
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(c);OGATE::QAB1(B),XR(c)
    • R(c);OGATE::QAR1(B),XR(c)
    • B(g);N_GUARD::S(F)
    • B(g);N_GUARD::S(F),XB(g)
    • P(e);N_GUARD::S(F)
  • Actual
    • Q(B);XP(e)
    • Threat
      • S(F)
    • Vars
      • R(c);N_GUARD,XP(C)::QAB1(B)
      • B(g);N_GUARD,XQ(B)::S(F)
      • S(h);N_GUARD,XP(E)::QAR1(B),XB(g)
      • R(b);S_CUTB(d)::QAB1(B)
      • B(d);N_GUARD,P_PINS(F)::QAB1(B)
      • B(g);OGATE::QAR1(B)
      • S(a);S_CUTR(b)::QAB(B)
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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).