MESON Chess Problem Database

Problem Display
PID: 269186 (3N1b1q/4p2n/N2k4/1R6/1p4BQ/3p2P1/1rbB3K/8 w - - 0 1)

Chicco, Adriano

3rd Prize, L'Italia Scacchistica, 1937

3N1b1q/4p2n/N2k4/1R6/1p4BQ/3p2P1/1rbB3K/8

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bxb4#
    • 1...b3
      • 2.Bb4#
  • Tries
    • 1.Bf4+?
      • 1...Qe5
        • 2.Bxe5#
      • 1...e5!
    • 1.Rc5?
      • threat
        • 2.Sb7#
        • 2.Sf7#
      • 1...Qf6
        • 2.Sb7#
      • 1...Qg7
        • 2.Sb7#
      • 1...Qg8
        • 2.Sb7#
      • 1...Bb3
        • 2.Sb7#
      • 1...Sg5
        • 2.Sb7#
      • 1...e6!
  • Keys
    • 1.Be6!
      • threat
        • 2.Rd5#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qe5
        • 2.Rb6#
      • 1...Bb3
        • 2.Qxb4#
      • 1...Sf6
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::B(A),XP(d)
    • P(d);S_CUTR(a)::B(A)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::B(A),XQ(i)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);::S(H)
        • B(b);P_PINB(A)::S(H)
        • S(g);P_PINQ(E)::S(H)
      • Refutation
        • P(f);
  • Actual
    • B(D);
    • Threat
      • R1(F)
    • Vars
      • Q(i);N_GUARD::QAR2(E),XQ(i)
      • Q(i);P_PINP(C),SBLOCK::R(F)
      • B(b);P_PINB(A),S_CUTR(a)::QAB(E),XP(d)
      • S(g);P_PINQ(E),S_CUTQ(i)::B(A)
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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).