MESON Chess Problem Database

Problem Display
PID: 198693 (8/5K2/3B3p/5Q2/4p2k/3p3P/5n2/3n3r w - - 0 1)

Corrias, Antonio G

L'Italia Scacchistica, 1921

8/5K2/3B3p/5Q2/4p2k/3p3P/5n2/3n3r

#2

4 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Qxg4#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Qh5#
      • 1...h5
        • 2.Qxh5#
      • 1...Rg1+!
    • 1.Qf4+?
      • 1...Kxh3
        • 2.Qg3#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kh5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxh6#
      • 1...Kxh3
        • 2.Qg3#
      • 1...Rxh3
        • 2.Be7#
      • 1...Sxh3
        • 2.Bg3#
      • 1...Sg4
        • 2.Qxg4#
      • 1...h5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(B),XS(c)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • P(g);::QAR1(B),XP(g)
      • Refutation
        • R(b);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(A)::QAR1(B)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B),XP(g)
    • Vars
      • K(f);P-FLIGHT,XP(A)::QAR1(B)
      • R(b);SBLOCK,XP(A)::B(C)
      • S(c);SBLOCK,XP(A)::B(C)
      • S(c);N_GUARD::QAR1(B),XS(c)
      • P(g);SBLOCK::QAB1(B)
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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).