MESON Chess Problem Database

Problem Display
PID: 270062 (8/4K2B/b4p2/2pNk3/3R2n1/4b1r1/1Q2n1r1/4R3 w - - 0 1)

Chicco, Adriano

L'Illustrazione Italiana, 1931

8/4K2B/b4p2/2pNk3/3R2n1/4b1r1/1Q2n1r1/4R3

#2

6 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Rd3#
    • 1...Bg5
      • 2.Rd3#
    • 1...Bh6
      • 2.Rd3#
    • 1...Sc1
      • 2.Rd2#
    • 1...Sg1
      • 2.Rd2#
    • 1...Sf4
      • 2.Rd2#
  • Tries
    • 1.Sxf6?
      • threat
        • 2.Sd7#
        • 2.Re4#
      • 1...Bxd4
        • 2.Qb8#
      • 1...Sxd4
        • 2.Qb8#
      • 1...cxd4
        • 2.Qb8#
      • 1...Sc3
        • 2.Re4#
      • 1...Bg5
        • 2.Re4#
      • 1...Bb5
        • 2.Re4#
      • 1...Bc8
        • 2.Re4#
      • 1...Sxf6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Re4#
      • 1...Bxd4
        • 2.Qb8#
      • 1...Bxf4
        • 2.Rd3#
      • 1...Sxd4
        • 2.Qb8#
      • 1...Sxf4
        • 2.Rd2#
      • 1...cxd4
        • 2.Qb8#
      • 1...f5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD,P_SPINS(a)::QAB(B)+R(C)
    • S(a);N_GUARD,P_SPINB(c)::QAB(B)+R(C)
  • Tries
    • Try
      • S(D);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);P_SPINB(c),P_SPINS(a),SBLOCK,XR(C)::QAB(B)
        • S(a);P_SPINB(c),P_SPINS(a),SBLOCK,XR(C)::QAB(B)
        • P(f);P_SPINP(f),SBLOCK,XR(C)::QAB(B)
        • S(a);P_SPINB(c)::R1(C)
        • B(c);P_PINS(D),P_SPINS(a)::QAB(B)+R(C),DCHECK
        • B(h);::QAB(B)+R(C),DCHECK
      • Refutation
        • S(e);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB(B)+R(C),DCHECK
    • Vars
      • B(c);P_SPINB(c),P_SPINS(a),SBLOCK,XR(C)::QAB(B)
      • B(c);N_GUARD,P_SPINS(a),SBLOCK,XS(D)::QAB(B)+R(C)
      • S(a);P_SPINB(c),P_SPINS(a),SBLOCK,XR(C)::QAB(B)
      • S(a);N_GUARD,P_SPINB(c),SBLOCK,XS(D)::QAB(B)+R(C)
      • P(f);P_SPINP(f),SBLOCK,XR(C)::QAB(B)
      • P(i);SBLOCK::S(D)
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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).