MESON Chess Problem Database

Problem Display
PID: 175654 (1Nnr2B1/3p1Rp1/6p1/4k2n/6PP/5K2/3Q4/b7 w - - 0 1)

Robertson, George T

Elmira Telegram, 1882

1Nnr2B1/3p1Rp1/6p1/4k2n/6PP/5K2/3Q4/b7

#2

7 + 8

5214 Brooklyn Daily Eagle 1900
6490 yacpdb 2018
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Sc6+?
      • 1...Ke6
        • 2.Rf8#
      • 1...dxc6!
    • 1.Re7+?
      • 1...Kf6
        • 2.Qg5#
      • 1...Sxe7!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Rxd7#
      • 1...Kd6!
  • Keys
    • 1.Rf6!
      • 1...Kxf6
        • 2.Qg5#
      • 1...Rxg8
        • 2.Sxd7#
      • 1...Sxf6
        • 2.Qf4#
      • 1...gxf6
        • 2.Qd5#
      • 1...Re8
        • 2.Sxd7#
      • 1...Rf8
        • 2.Sxd7#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Bd4
        • 2.Qg5#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#
      • 1...g5
        • 2.Rf5#
      • 1...d5
        • 2.Re6#
      • 1...d6
        • 2.Re6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
    • P(d);N_GUARD::R1(E)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT::B(G)+R(E)
      • Refutation
        • P(e);XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • S(g);XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::B(G)+R(E),DCHECK,XP(e)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(b);S_FLIGHT,XR(E)::QAB1(A)
      • R(h);N_GUARD,XB(G)::S(F),XP(e)
      • S(c);N_GUARD,XR(E)::QAB1(A)
      • P(f);SBLOCK,XR(E)::QAR1(A)
      • R(h);N_GUARD::S(F),XP(e)
      • R(h);N_GUARD,P_PINR(E)::S(F),XP(e)
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);SBLOCK::QAR2(A)
      • S(c);N_GUARD::QAB1(A)
      • S(c);N_GUARD::QAB1(A),XS(c)
      • S(g);N_GUARD::QAB1(A)
      • S(g);N_GUARD::QAB1(A),XS(g)
      • P(d);N_GUARD::R1(E)
      • P(e);N_GUARD::R1(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).