MESON Chess Problem Database

Problem Display
PID: 164120 (1b3Qb1/2rk1q2/PP2pPB1/4r2N/5B1p/6pK/8/2R2R2 w - - 0 1)

Colaneri, Bruno

Best Problems, 2015

1b3Qb1/2rk1q2/PP2pPB1/4r2N/5B1p/6pK/8/2R2R2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.Sxf6#
    • 1...Ba7
      • 2.Rxc7#
  • Tries
    • 1.Qe7+?
      • 1...Kc8
        • 2.b7#
      • 1...Qxe7!
    • 1.Qxf7+?
      • 1...Kd6
        • 2.Rfd1#
      • 1...Kc8
        • 2.Qe8#
      • 1...Kd8
        • 2.Qe8#
      • 1...Bxf7!
  • Keys
    • 1.Qd6+!
      • 1...Kxd6
        • 2.Rfd1#
      • 1...Kc8
        • 2.b7#
      • 1...Ke8
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(g);XP(H)::S(E),XQ(g)
    • B(h);N_GUARD::R1(A),XR(e)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(f);P_SPINR(e),S_FLIGHT::P(G)
      • Refutation
        • Q(g);XQ(J)
    • Try
      • Q(J);CHECK,XQ(g)
      • Vars
        • K(f);P-FLIGHT,P_SPINR(c)::R(B)
        • K(f);P_SPINR(e),S_FLIGHT::QAR2(J)
        • K(f);P-FLIGHT::QAR1(J)
      • Refutation
        • B(i);XQ(J)
  • Actual
    • Q(J);CHECK
    • Vars
      • K(f);P-FLIGHT,P_SPINR(c),XQ(J)::R(B)
      • K(f);P_SPINR(e),S_FLIGHT::P(G)
      • K(f);P_SPINQ(g),S_FLIGHT::S(E)
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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).