MESON Chess Problem Database

Problem Display
PID: 32897 (3n1rB1/5r1b/R1p3pR/n1BNk3/8/p3NPP1/K7/4Q3 w - - 0 1)

Piatesi, Antonio

1st Prize, Parallele 50, 1948/I

3n1rB1/5r1b/R1p3pR/n1BNk3/8/p3NPP1/K7/4Q3

#2

10 + 9

461 Schach-Express 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sd1#
      • 2.Sf1#
      • 2.Sc2#
      • 2.Sg2#
      • 2.Sc4#
      • 2.Sg4#
      • 2.Qc3#
      • 2.Qa1#
    • 1...Rf6
      • 2.Qc3#
      • 2.Qa1#
    • 1...Ra7
      • 2.Qc3#
      • 2.Qa1#
    • 1...Rb7
      • 2.Qc3#
    • 1...Rc7
      • 2.Qc3#
      • 2.Qa1#
    • 1...Rd7
      • 2.Qc3#
      • 2.Qa1#
    • 1...Re7
      • 2.Qc3#
      • 2.Qa1#
    • 1...Rg7
      • 2.Qc3#
      • 2.Qa1#
    • 1...g5
      • 2.Qc3#
      • 2.Qa1#
  • Tries
    • 1.Sc4+?
      • 1...Kf5
        • 2.Qe5#
      • 1...Kxd5!
    • 1.Sg4+?
      • 1...Kf5
        • 2.Qe5#
      • 1...Kxd5!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Rxf3
        • 2.Sg4#
      • 1...cxd5
        • 2.Sg4#
      • 1...Rf4
        • 2.Qb8#
      • 1...g5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(f);::QAB(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(f),XS(G)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(f),XS(G)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(d),P_SPINR(f)::QAB1(A)
      • R(f);XP(D)::S(C)
      • P(d);SBLOCK,XS(G)::S(C)
      • R(f);N_GUARD::QAB(A)
      • P(e);::QAB(A)
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).