MESON Chess Problem Database

Problem Display
PID: 192878 (1R5B/1r5B/n4N2/3p2b1/pp6/Q7/p1P5/rk1K4 w - - 0 1)

Zaragoza, Luis

BCPS Website, 2019

1R5B/1r5B/n4N2/3p2b1/pp6/Q7/p1P5/rk1K4

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.c3#
      • 2.c4#
    • 1...Rb6
      • 2.c3#
      • 2.c4#
    • 1...Rxb8
      • 2.c3#
      • 2.c4#
    • 1...Bc1
      • 2.Qxc1#
    • 1...Bh4
      • 2.Qc1#
    • 1...Bxf6
      • 2.Qc1#
    • 1...Sc7
      • 2.c3#
      • 2.c4#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Qb2#
        • 2.c3#
        • 2.c4#
      • 1...Rxd7
        • 2.Qb2#
      • 1...bxa3
        • 2.c4#
      • 1...Rb6
        • 2.Qb2#
      • 1...Bc1
        • 2.Qxc1#
        • 2.c3#
        • 2.c4#
      • 1...Bf6
        • 2.Qc1#
        • 2.c3#
        • 2.c4#
      • 1...Sc5
        • 2.Qb2#
      • 1...d4!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Qb2#
      • 1...bxa3
        • 2.c4#
      • 1...Rg7
        • 2.Sc3#
      • 1...Bc1
        • 2.Qxc1#
      • 1...Bf6
        • 2.Qc1#

This is a version of 192877

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::QAR1(C),XB(g)
    • B(g);N_GUARD::QAR1(C)
    • B(g);N_GUARD,XS(D)::QAR1(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • R(i);P_SPINP(e),XS(D)::QAR1(C)
        • P(e);P_SPINR(i),XQ(C)::B(E)+P(B)
        • R(i);::QAR1(C)
        • S(h);::QAR1(C)
      • Refutation
        • P(f);
  • Actual
    • S(D);XP(f)
    • Threat
      • QAR1(C)
    • Vars
      • P(e);P_SPINR(i),XQ(C)::B(E)+P(B)
      • R(i);P_SPINP(e)::S(D)
      • B(g);N_GUARD::QAR1(C),XB(g)
      • B(g);N_GUARD::QAR1(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).