MESON Chess Problem Database

Problem Display
PID: 194291 (1bB1K2n/1n2N3/1r1k2p1/R3p3/1N1r4/8/2Q5/8 w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1917

1bB1K2n/1n2N3/1r1k2p1/R3p3/1N1r4/8/2Q5/8

#2

6 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rdxb4
      • 2.Rd5#
    • 1...Re4
      • 2.Rd5#
    • 1...Rf4
      • 2.Rd5#
    • 1...Rg4
      • 2.Rd5#
    • 1...Rh4
      • 2.Rd5#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Rbxb4
      • 2.Qc6#
    • 1...Rb5
      • 2.Qc6#
    • 1...Ra6
      • 2.Rxa6#
    • 1...Rc6
      • 2.Qxc6#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sd8
      • 2.Qc5#
    • 1...e4
      • 2.Qh2#
    • 1...g5
      • 2.Sf5#
  • Tries
    • 1.Bd7?
      • threat
        • 2.Sc8#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Rc4!
  • Keys
    • 1.Sa6!
      • 1...Rxa6
        • 2.Rxa6#
      • 1...Sxa5
        • 2.Qc5#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Ra4
        • 2.Rd5#
      • 1...Rdb4
        • 2.Rd5#
      • 1...Rc4
        • 2.Rd5#
      • 1...Re4
        • 2.Rd5#
      • 1...Rf4
        • 2.Rd5#
      • 1...Rg4
        • 2.Rd5#
      • 1...Rh4
        • 2.Rd5#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Rb1
        • 2.Qc6#
      • 1...Rb2
        • 2.Qc6#
      • 1...Rb3
        • 2.Qc6#
      • 1...Rbb4
        • 2.Qc6#
      • 1...Rb5
        • 2.Qc6#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Ba7
        • 2.Qc7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd8
        • 2.Qc5#
      • 1...Sf7
        • 2.Qxg6#
      • 1...e4
        • 2.Qh2#
      • 1...g5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,XS(B)::R1(C)
    • R(a);N_GUARD::R1(C)
    • R(a);N_GUARD::R1(C),XR(a)
    • R(c);N_GUARD,XS(B)::QAR1(A)
    • R(c);N_GUARD::QAR1(A)
    • R(c);OGATEB::R(C),XR(c)
    • R(c);N_GUARD::QAR1(A),XR(c)
    • S(f);N_GUARD::QAB1(A),XS(f)
    • S(f);N_GUARD::QAB1(A)
    • P(b);OGATEB::QAB(A)
    • P(e);N_GUARD::S(D)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(D)
      • Vars
        • R(c);N_GUARD::QAR1(A),XR(c)
        • S(f);N_GUARD::QAB1(A),XS(f)
      • Refutation
        • R(a);
  • Actual
    • S(B);
    • Vars
      • R(c);OGATE,XS(B)::R(C),XR(c)
      • S(f);N_GUARD,XR(C)::QAB1(A)
      • R(a);OGATEB::QAR(A),XR(a)
      • R(a);N_GUARD::R1(C)
      • R(a);N_GUARD::R1(C),XR(a)
      • R(c);N_GUARD::QAR1(A)
      • R(c);N_GUARD::QAR1(A),XR(c)
      • B(g);N_GUARD::QAB1(A)
      • B(g);N_GUARD::QAB1(A),XB(g)
      • S(f);N_GUARD::QAB1(A),XS(f)
      • S(f);N_GUARD::QAB1(A)
      • S(h);N_GUARD::QAR(A),XP(e)
      • P(b);OGATEB::QAB(A)
      • P(e);N_GUARD::S(D)
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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).