MESON Chess Problem Database

Problem Display
PID: 269472 (b3RrN1/r1pNR3/P2k4/PP4n1/K1Q2q2/6B1/7b/8 w - - 0 1)

Chicco, Adriano

2nd HM., El Ajedrez Espanol, 1952

b3RrN1/r1pNR3/P2k4/PP4n1/K1Q2q2/6B1/7b/8

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg3
      • 2.Qc5#
    • 1...Qe5
      • 2.Qc5#
    • 1...Rb7
      • 2.Qd4#
    • 1...Be4
      • 2.Qc5#
    • 1...Se4
      • 2.Qe6#
  • Tries
    • 1.Bxf4+?
      • 1...Bxf4
        • 2.Qc5#
      • 1...Rxf4!
  • Keys
    • 1.Sdf6!
      • threat
        • 2.Rd7#
      • 1...Rxf6
        • 2.Rd8#
      • 1...Rxe8
        • 2.Sxe8#
      • 1...Se6
        • 2.Rxe6#
      • 1...Rf7
        • 2.Rd8#
      • 1...Bc6
        • 2.Qb4#
      • 1...c5
        • 2.Qxf4#
      • 1...c6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_PINQ(C),N_SPINQ(b),XB(A)::QAB1(C)
    • Q(b);N_PINQ(C)::QAB1(C)
    • R(e);S_CUTB(g)::QAR2(C)
    • B(g);N_PINQ(C)::QAB1(C)
    • S(c);N_PINQ(C)::QAR1(C)
  • Tries
    • Try
      • B(A);CHECK,N_SPINQ(C),XQ(b)
      • Vars
        • B(a);XB(A)::QAB1(C)
      • Refutation
        • R(h);P_PINQ(C),XB(A)
  • Actual
    • S(G);
    • Threat
      • R1(H)
    • Vars
      • R(h);N_GUARD,XS(G)::R(I)
      • R(h);XR(I)::S(G),XR(h)
      • S(c);N_GUARD::R1(H),XS(c)
      • R(h);N_GUARD::R(I)
      • B(g);P_PINP(E),S_CUTP(f)::QAB(C)
      • P(f);SBLOCK::QAB(C),XQ(b)
      • P(f);S_CUTB(g)::QAR2(C)
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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).