MESON Chess Problem Database

Problem Display
PID: 184898 (8/K7/N2p1nB1/3nR3/3k4/3P4/3Q4/8 w - - 0 1)

Lissner, Morris

Chess Weekly, 1908

8/K7/N2p1nB1/3nR3/3k4/3P4/3Q4/8

#2

6 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qe3#
    • 1...Se3
      • 2.Qb2#
    • 1...Sb4
      • 2.Qb2#
    • 1...Sf4
      • 2.Qb2#
    • 1...Sb6
      • 2.Qb2#
    • 1...Sc7
      • 2.Qb2#
    • 1...Se7
      • 2.Qb2#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sg4
      • 2.Re4#
    • 1...Sh5
      • 2.Re4#
    • 1...Sd7
      • 2.Re4#
    • 1...Sh7
      • 2.Re4#
    • 1...Se8
      • 2.Re4#
    • 1...Sg8
      • 2.Re4#
  • Keys
    • 1.Sc7!
      • 1...Kc5
        • 2.Qc3#
      • 1...Kxe5
        • 2.d4#
      • 1...Sxc7
        • 2.Qb2#
      • 1...dxe5
        • 2.Se6#
      • 1...Sc3
        • 2.Qe3#
      • 1...Se3
        • 2.Qb2#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sf4
        • 2.Qb2#
      • 1...Sb6
        • 2.Qb2#
      • 1...Se7
        • 2.Qb2#
      • 1...Se4
        • 2.Rxd5#
      • 1...Sg4
        • 2.Rxd5#
      • 1...Sh5
        • 2.Rxd5#
      • 1...Sd7
        • 2.Rxd5#
      • 1...Sh7
        • 2.Rxd5#
      • 1...Se8
        • 2.Rxd5#
      • 1...Sg8
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,SBLOCK::QAB1(A)
    • S(b);N_GUARD::QAB(A)
    • S(d);N_GUARD::R1(C),XS(d)
    • S(d);N_GUARD::R1(C)
  • Actual
    • S(D);
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT::QAR2(A)
      • K(a);OGATE,S_FLIGHT,XR(C)::P(B)
      • S(b);N_GUARD,XS(D)::QAB(A)
      • P(c);SBLOCK,XR(C)::S(D)
      • S(b);N_GUARD,SBLOCK::QAB1(A)
      • S(b);N_GUARD::QAB(A)
      • S(d);N_GUARD::R1(C),XS(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).