MESON Chess Problem Database

Problem Display
PID: 193890 (K7/2B5/k7/1p3p2/4pP1n/1pp1P1R1/b6Q/1nR5 w - - 0 1)

Todd, William R

Pittsburgh Gazette-Times, 1916

K7/2B5/k7/1p3p2/4pP1n/1pp1P1R1/b6Q/1nR5

#2

7 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Rg6#
      • 2.Qh6#
    • 1...Sf3
      • 2.Rg6#
      • 2.Qh6#
    • 1...Sg6
      • 2.Rxg6#
    • 1...b4
      • 2.Qe2#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Rd6#
      • 1...b4
        • 2.Qe2#
      • 1...Sd2!
    • 1.Rxc3?
      • threat
        • 2.Rc6#
      • 1...b4
        • 2.Qe2#
      • 1...Sxc3!
    • 1.Qxa2+?
      • 1...Sa3
        • 2.Qxa3#
      • 1...bxa2!
    • 1.Qd2?
      • threat
        • 2.Qd6#
      • 1...cxd2
        • 2.Rc6#
      • 1...b4
        • 2.Qe2#
      • 1...Sxd2!
  • Keys
    • 1.Qb2!
      • 1...cxb2
        • 2.Rc6#
      • 1...b4
        • 2.Qe2#
      • 1...Sd2
        • 2.Qa3#
      • 1...Sa3
        • 2.Qxa3#
      • 1...Sg2
        • 2.Rg6#
      • 1...Sf3
        • 2.Rg6#
      • 1...Sg6
        • 2.Rxg6#
      • 1...c2
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R(D),XS(f)
    • P(g);OGATEB::QAB(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • P(g);OGATEB::QAB(B)
      • Refutation
        • S(a);
    • Try
      • R(A);XP(d)
      • Threat
        • R(A)
      • Vars
        • P(g);OGATEB::QAB(B)
      • Refutation
        • S(a);XR(A)
    • Try
      • Q(B);CHECK,XB(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR(B),XS(a)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • P(d);OGATE,XQ(B)::R(A)
        • P(g);OGATEB::QAB(B)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • P(d);OGATE,XQ(B)::R(A)
      • P(g);OGATEB::QAB(B)
      • S(a);N_GUARD::QAR(B)
      • S(a);N_GUARD::QAR(B),XS(a)
      • S(f);N_GUARD::R(D)
      • S(f);N_GUARD::R(D),XS(f)
      • P(d);OGATE::QAR(B)
HTML5 logo

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).