MESON Chess Problem Database

Problem Display
PID: 85098 (1K2Q1b1/2P2n1p/1P1N3R/2rkp1n1/RqN3P1/3pB3/B4P2/8 w - - 0 1)

Makaronets, Leonid

Torre & Cavallo - Scacco!, 2000

1K2Q1b1/2P2n1p/1P1N3R/2rkp1n1/RqN3P1/3pB3/B4P2/8

#2

12 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb6+
      • 2.Sxb6#
  • Tries
    • 1.Qxe5+?
      • 1...Kc6
        • 2.c8Q#
      • 1...Sxe5!
    • 1.Qe6+?
      • 1...Kc6
        • 2.c8Q#
        • 2.c8R#
      • 1...Sxe6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sf6#
      • 1...Qxb6+
        • 2.Sxb6#
      • 1...Kxe4
        • 2.Sd2#
      • 1...Qxc4
        • 2.Sc3#
      • 1...Rxc4
        • 2.Qc6#
      • 1...Sxe4
        • 2.Qe6#
      • 1...Rc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,XP(G)::B(A)+S(E),DCHECK,XQ(b)
  • Tries
    • Try
      • Q(L);CHECK,XP(e)
      • Vars
        • K(d);S_FLIGHT::P=Q
      • Refutation
        • S(g);XQ(L)
    • Try
      • Q(L);CHECK
      • Vars
        • K(d);S_FLIGHT::P=Q
      • Refutation
        • S(f);XQ(L)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • Q(b);CHECK,XP(G)::B(A)+S(E),DCHECK,XQ(b)
      • K(d);P_SPINP(e),S_FLIGHT,XS(H)::S(E)
      • Q(b);N_GUARD,N_PINP(G),P_SPINQ(b),XS(E)::S(H)
      • R(c);N_GUARD,P_SPINR(c),XS(E)::QAB1(L)
      • S(f);N_GUARD,SBLOCK,XS(H)::QAB1(L)
      • R(c);N_GUARD::QAB1(L),XR(c)
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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).