MESON Chess Problem Database

Problem Display
PID: 222619 (1NRr1rn1/Kp6/n3p3/3k4/B1p1b3/6Q1/8/6B1 w - - 0 1)

Block, AB

Nashville Daily American, 1884

1NRr1rn1/Kp6/n3p3/3k4/B1p1b3/6Q1/8/6B1

#2

6 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Rxd8#
    • 1...Rf3
      • 2.Rxd8#
    • 1...Rf5
      • 2.Rxd8#
    • 1...Rf6
      • 2.Rxd8#
    • 1...Sb4
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sxb8
      • 2.Rc5#
    • 1...c3
      • 2.Bb3#
    • 1...b6
      • 2.Bc6#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qe5#
      • 1...Rf4
        • 2.Rxd8#
      • 1...e5
        • 2.Qxe5#
      • 1...Rf5
        • 2.Rxd8#
      • 1...Kxd4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qe5#
      • 1...bxc6
        • 2.Bxc6#
      • 1...Rf4
        • 2.Rxd8#
      • 1...c3
        • 2.Bb3#
      • 1...e5
        • 2.Qxe5#
      • 1...Rf5
        • 2.Rxd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::R(F),XR(g)
    • S(d);N_GUARD::R1(F)
    • S(d);N_GUARD::R1(F),XS(d)
    • S(d);N_GUARD,XS(E)::R1(F)
    • P(a);OGATEB::B(C)
    • P(f);N_GUARD::B(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR1(B)
      • Vars
        • R(h);N_GUARD::R(F),XR(g)
        • P(e);::QAR1(B),XP(e)
      • Refutation
        • K(c);P-FLIGHT,XB(A)
  • Actual
    • S(E);
    • Threat
      • QAR1(B)
    • Vars
      • P(f);OGATE,XS(E)::B(C),XP(f)
      • R(h);N_GUARD::R(F),XR(g)
      • P(a);OGATEB::B(C)
      • P(e);::QAR1(B),XP(e)
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).