MESON Chess Problem Database

Problem Display
PID: 164920 (1r3Q2/6pN/1nb1p3/Rn1rk1pp/2Pq2P1/3PNp2/pB3K2/4R3 w - - 0 1)

Magini, Fabio

Best Problems, 2016

1r3Q2/6pN/1nb1p3/Rn1rk1pp/2Pq2P1/3PNp2/pB3K2/4R3

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb2+
      • 2.Sc2#
    • 1...Qc3
      • 2.Sc2#
    • 1...Sa3
      • 2.Qxb8#
    • 1...Sc3
      • 2.Qxb8#
    • 1...Sa7
      • 2.Qxb8#
  • Keys
    • 1.Kxf3!
      • threat
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg2#
        • 2.Sxd5#
        • 2.Sf5#
      • 1...Rc5+
        • 2.Sd5#
      • 1...Rd6+
        • 2.Sd5#
      • 1...Rd7+
        • 2.Sd5#
      • 1...Rdd8+
        • 2.Sd5#
      • 1...Rxf8+
        • 2.Sf5#
      • 1...hxg4+
        • 2.Sxg4#
      • 1...Qxb2
        • 2.Sc2#
      • 1...Sxc4
        • 2.Sxc4#
      • 1...Qc3
        • 2.Sc2#
        • 2.Sf5#
      • 1...a1Q
        • 2.Sd1#
      • 1...a1R
        • 2.Sd1#
      • 1...Sc3
        • 2.Qxb8#
      • 1...Sd6
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 3
  • Sets
    • Q(c);CHECK,N_PINS(E),N_SPINQ(c),XB(B)::R(A)+S(E)
    • Q(c);N_PINS(E)::R(A)+S(E)
    • S(d);N_GUARD,P_SPINR(e)::QAB(J),XR(m)
    • S(d);N_GUARD,N_SPINQ(c),P_SPINR(e)::QAB(J),XR(m)
  • Actual
    • K(C);N_SPINS(E),P-FLIGHT,XP(b)
    • Threat
      • DUALS(6)
    • Vars
      • R(e);CHECK::R(A)+S(E)
      • R(e);CHECK,P_SPINS(d)::R(A)+S(E)
      • R(m);CHECK,XQ(J)::R(A)+S(E)
      • P(h);CHECK,XP(G)::R(A)+S(E),DCHECK,XP(h)
      • Q(c);N_SPINQ(c),XB(B)::R(A)+S(E)
      • S(i);XP(F)::R(A)+S(E),DCHECK,XS(i)
      • P(a);::R(A)+S(E)
      • S(d);N_GUARD,N_SPINQ(c),P_SPINR(e)::QAB(J),XR(m)
      • S(d);P_SPINR(e),SBLOCK::QAB(J),XP(l)
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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).