MESON Chess Problem Database

Problem Display
PID: 163148 (3Kb2Q/2nR3B/2ppp1qb/1ppN2p1/1R1pkPP1/4N3/3BP3/7n w - - 0 1)

Fasano, Alessandro

Best Problems, 2013

3Kb2Q/2nR3B/2ppp1qb/1ppN2p1/1R1pkPP1/4N3/3BP3/7n

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd7
      • 2.Bxg6#
    • 1...gxf4
      • 2.Sc3#
  • Tries
    • 1.Sd1?
      • threat
        • 2.S1c3#
        • 2.S5c3#
        • 2.Sf6#
      • 1...Kxd5
        • 2.Qe5#
      • 1...cxb4
        • 2.Sf6#
      • 1...gxf4
        • 2.S1c3#
        • 2.S5c3#
      • 1...cxd5
        • 2.Sc3#
      • 1...exd5
        • 2.Sc3#
      • 1...Bg7
        • 2.S1c3#
        • 2.S5c3#
      • 1...c4
        • 2.Sf6#
      • 1...Sxd5!
    • 1.Sc4?
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Sxd5
        • 2.Sxd6#
      • 1...cxd5
        • 2.Sxd6#
      • 1...exd5
        • 2.Sxd6#
      • 1...d3
        • 2.Sc3#
      • 1...Bg7!
    • 1.Rxd6?
      • threat
        • 2.Qe5#
      • 1...gxf4
        • 2.Sc3#
      • 1...e5
        • 2.Qxe5#
      • 1...Bg7!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sc3#
      • 1...Qf6+
        • 2.Sxf6#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Sxd5
        • 2.Sxd6#
      • 1...cxb4
        • 2.Qxd4#
      • 1...cxd5
        • 2.Sxd6#
      • 1...exd5
        • 2.Sxd6#
      • 1...c4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • B(m);N_GUARD,XR(H)::B(I),XQ(j)
    • P(f);SBLOCK,XP(E)::S(G)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);N_SPINP(b),N_SPINQ(j),P_SPINP(h),S_FLIGHT,XS(G)::QAR1(K)
        • P(e);N_SPINP(b),XR(D)::S(G)
        • P(g);XS(G)::S(C)
        • P(i);XS(G)::S(C)
        • P(e);N_SPINP(b)::S(G)
      • Refutation
        • S(l);XS(G)
    • Try
      • S(C);N_PINP(b)
      • Threat
        • S(G)
      • Vars
        • K(c);N_SPINQ(j),P_SPINP(h),S_FLIGHT,XS(G)::QAR1(K)
        • S(l);SBLOCK,XS(G)::S(C),XP(h)
        • P(g);SBLOCK,XS(G)::S(C),XP(h)
        • P(i);SBLOCK,XS(G)::S(C),XP(h)
        • P(b);N_GUARD::S(G)
      • Refutation
        • B(k);
    • Try
      • R(H);XP(h)
      • Threat
        • QAR1(K)
      • Vars
        • P(f);SBLOCK,XP(E)::S(G)
        • P(i);::QAR1(K),XP(i)
      • Refutation
        • B(k);
  • Actual
    • S(C);N_PINQ(j)
    • Threat
      • S(G)
    • Vars
      • Q(j);CHECK,N_GUARD::S(G),XQ(j)
      • K(c);N_SPINP(b),P_SPINP(h),S_FLIGHT,XS(G)::QAR1(K)
      • S(l);SBLOCK,XS(G)::S(C),XP(h)
      • P(e);N_GUARD,N_SPINP(b),XR(D)::QAR1(K),XP(b)
      • P(g);SBLOCK,XS(G)::S(C),XP(h)
      • P(i);SBLOCK,XS(G)::S(C),XP(h)
      • P(e);N_GUARD,N_SPINP(b)::QAR1(K),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).