MESON Chess Problem Database

Problem Display
PID: 198763 (1r6/kq5R/6R1/3Q4/2N5/8/5p1p/6nK w - - 0 1)

Pasqualini, Giulio

L'Italia Scacchistica, 1921

1r6/kq5R/6R1/3Q4/2N5/8/5p1p/6nK

#2

5 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka8
      • 2.Ra6#
    • 1...Ra8
      • 2.Rxb7#
      • 2.Qxb7#
    • 1...Rc8
      • 2.Qxb7#
    • 1...Rd8
      • 2.Qxb7#
    • 1...Re8
      • 2.Qxb7#
    • 1...Rf8
      • 2.Qxb7#
    • 1...Rg8
      • 2.Qxb7#
    • 1...Rh8
      • 2.Qxb7#
    • 1...Sf3
      • 2.Qa5#
  • Tries
    • 1.Rxb7+?
      • 1...Ka8
        • 2.Sb6#
        • 2.Ra6#
      • 1...Rxb7!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Ra3#
      • 1...Ka6
        • 2.Ra3#
      • 1...Ka8
        • 2.Ra3#
      • 1...Rc8
        • 2.Qxb7#
      • 1...Rd8
        • 2.Qxb7#
      • 1...Re8
        • 2.Qxb7#
      • 1...Rf8
        • 2.Qxb7#
      • 1...Rg8
        • 2.Qxb7#
      • 1...Rh8
        • 2.Qxb7#
      • 1...Ra8
        • 2.Qxb7#
      • 1...Sf3
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::R(D)
    • R(f);N_GUARD::QAR1(C),XQ(e)
    • S(a);N_PINQ(C)::QAR2(C)
  • Tries
    • Try
      • R(E);CHECK,N_SPINQ(C),XQ(e)
      • Refutation
        • R(f);XR(E)
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • K(d);N_SPINQ(e),P-FLIGHT::R(D)
      • K(d);P-FLIGHT::R(D)
      • R(f);N_GUARD::QAR1(C),XQ(e)
      • S(a);N_PINQ(C)::QAR2(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).