MESON Chess Problem Database

Problem Display
PID: 276661 (6b1/B7/3Pp2N/p3bR1N/Rr2kppQ/1Bp1p2n/2K2nP1/8 w - - 0 1)

Sardella, Giuseppe

Best Problems, 2024

6b1/B7/3Pp2N/p3bR1N/Rr2kppQ/1Bp1p2n/2K2nP1/8

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...f3
      • 2.gxf3#
    • 1...g3
      • 2.Sxg3#
  • Tries
    • 1.Rxb4+?
      • 1...Bd4
        • 2.Sf6#
        • 2.Rxd4#
      • 1...axb4!
    • 1.Rxf4+?
      • 1...Sxf4
        • 2.Sg3#
      • 1...Bxf4!
    • 1.Qxg4?
      • threat
        • 2.Sg3#
        • 2.Qf3#
      • 1...Rc4
        • 2.Qf3#
      • 1...Sh1
        • 2.Qf3#
      • 1...Sg1
        • 2.Sg3#
      • 1...Sg5
        • 2.Sg3#
      • 1...Sxg4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qb7#
      • 1...exf5
        • 2.Sf6#
      • 1...Bd4
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(j);N_GUARD,XP(H)::S(G)
    • B(j);N_GUARD::S(G),XB(j)
    • P(g);OGATE,P_SPINP(h)::P(B),XP(g)
    • P(h);P_SPINP(g)::S(G),XP(h)
  • Tries
    • Try
      • R(D);CHECK,XR(e)
      • Refutation
        • P(i);XR(D)
    • Try
      • R(F);CHECK,XP(g)
      • Vars
        • S(d);SBLOCK,XR(F)::S(G)
      • Refutation
        • B(j);XR(F)
    • Try
      • Q(E);P_PINP(g),XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::QAB1(E)
        • S(a);::QAB1(E)
        • S(d);::S(G)
      • Refutation
        • S(a);N_SPINP(g),XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • P(k);P_SPINB(j),XR(F)::S(G)
      • B(j);N_SPINR(e),P_SPINP(k)::B(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).