MESON Chess Problem Database

Problem Display
PID: 187976 (1r4B1/1nQn4/k7/3R4/8/K7/8/8 w - - 0 1)

von Sponer, Gyorgy Janos Andor

Pesti Naplo, 1910

1r4B1/1nQn4/k7/3R4/8/K7/8/8

#2

4 + 4

3713 Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Ra5#
    • 1...Sa5
      • 2.Rxa5#
    • 1...Sd6
      • 2.Ra5#
    • 1...Sd8
      • 2.Ra5#
  • Keys
    • 1.Rb5!
      • 1...Kxb5
        • 2.Bc4#
      • 1...Ka7
        • 2.Ra5#
      • 1...Rxg8
        • 2.Qxb7#
      • 1...Ra8
        • 2.Qxb7#
      • 1...Rc8
        • 2.Qxb7#
      • 1...Rd8
        • 2.Qxb7#
      • 1...Re8
        • 2.Qxb7#
      • 1...Rf8
        • 2.Qxb7#
      • 1...Sa5
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Sbc5
        • 2.Ra5#
        • 2.Qa5#
      • 1...Sd6
        • 2.Ra5#
        • 2.Qa5#
      • 1...Sd8
        • 2.Ra5#
        • 2.Qa5#
      • 1...Sdc5
        • 2.Qb6#
      • 1...Se5
        • 2.Qb6#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sf6
        • 2.Qb6#
      • 1...Sf8
        • 2.Qb6#

Anticipated by 184825(1908)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT,P_SPINS(b)::R(B)
    • S(b);N_GUARD::R1(B),XS(b)
    • S(b);N_GUARD::R1(B)
  • Actual
    • R(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(B)::B(D)
      • K(a);P-FLIGHT,P_SPINS(b)::R(B)
      • R(d);N_GUARD,XB(D)::QAB1(C),XS(b)
      • R(d);N_GUARD::QAB1(C),XS(b)
      • S(c);N_GUARD::QAR1(C)
      • S(c);N_GUARD::QAR1(C),XS(c)
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).