MESON Chess Problem Database

Problem Display
PID: 244613 (b1R3Q1/5pq1/B2p4/pNPk1P1n/1bN5/2p1PP2/K2P1n2/8 w - - 0 1)

Fasano, Alessandro

L'Italia Scacchistica, 2007

b1R3Q1/5pq1/B2p4/pNPk1P1n/1bN5/2p1PP2/K2P1n2/8

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Sxc3#
    • 1...Qd4
      • 2.Qxf7#
    • 1...Qe5
      • 2.Sb6#
    • 1...Qh8
      • 2.Qxf7#
    • 1...Qg1
      • 2.Qxf7#
    • 1...Qg2
      • 2.Qxf7#
    • 1...Qg3
      • 2.Qxf7#
    • 1...Qg4
      • 2.Qxf7#
    • 1...Qg5
      • 2.Qxf7#
  • Tries
    • 1.Sxc3+?
      • 1...Qxc3
        • 2.Qxf7#
      • 1...Bxc3!
    • 1.Qxg7?
      • threat
        • 2.Sb6#
        • 2.Qd4#
        • 2.Qxf7#
      • 1...Kxc4
        • 2.Sxc3#
        • 2.Qd4#
      • 1...Bxc5
        • 2.Sxc3#
        • 2.Qxf7#
      • 1...dxc5
        • 2.Sb6#
        • 2.Qxf7#
      • 1...Bc6
        • 2.Qd4#
      • 1...Sf4
        • 2.Sb6#
        • 2.Qd4#
      • 1...Sf6
        • 2.Qxf7#
      • 1...f6
        • 2.Qf7#
        • 2.Qg8#
      • 1...Sxg7!
    • 1.Qe8?
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Sxc3#
      • 1...Bxc5
        • 2.Sc7#
      • 1...Bc6!
  • Keys
    • 1.d4!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Sc7#
      • 1...Qxd4
        • 2.Qxf7#
      • 1...Bxc5
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(e);S_FLIGHT,XS(E)::B(I)+S(F),XP(b)
    • Q(i);N_GUARD::QAB(K),XP(h)
    • Q(i);SBLOCK::S(E)
  • Tries
    • Try
      • S(F);CHECK,XP(b)
      • Vars
        • Q(i);XS(F)::QAB(K),XP(h)
      • Refutation
        • B(c);XS(F)
    • Try
      • Q(K);N_PINP(h),XQ(i)
      • Threat
        • DUALS(3)
      • Vars
        • B(j);::QAR1(K)
        • S(f);::QAB(K),XP(h)
      • Refutation
        • S(f);XQ(K)
    • Try
      • Q(K);N_PINP(h)
      • Threat
        • S(E)
      • Vars
        • K(e);S_FLIGHT,XS(E)::B(I)+S(F),XP(b)
        • B(c);SBLOCK,XP(G)::S(F)
      • Refutation
        • B(j);
  • Actual
    • P(B);
    • Threat
      • S(E)
    • Vars
      • K(e);S_FLIGHT,XS(E)::B(I)+S(F)
      • Q(i);N_GUARD,XP(B)::QAB(K),XP(h)
      • B(c);N_GUARD,XP(G)::S(F),XP(b)
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).