MESON Chess Problem Database

Problem Display
PID: 263309 (K5n1/6bR/p2Pp2B/6r1/rkB1R2n/1N3p2/1P2P2Q/8 w - - 0 1)

Makaronets, Leonid

Szachy, 1971

K5n1/6bR/p2Pp2B/6r1/rkB1R2n/1N3p2/1P2P2Q/8

#2

10 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Bd2#
    • 1...Be5
      • 2.Rb7#
  • Tries
    • 1.Bd5+?
      • 1...Bd4
        • 2.Rb7#
      • 1...Kb5!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Bxe6#
      • 1...Rxe5
        • 2.Bd2#
      • 1...Bxe5
        • 2.Rb7#
      • 1...Rg4
        • 2.Bd2#
        • 2.Qc5#
      • 1...Sf5
        • 2.Qc5#
      • 1...Sf6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);OGATE::B(H)
    • B(h);OGATE::R(I)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • B(h);OGATE,P_SPINB(h)::R(I)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • R(F)+B(E),XP(g)
    • Vars
      • R(e);OGATE,XQ(C)::B(H)
      • B(h);OGATE,XQ(C)::R(I)
      • S(d);S_CUTR(e)::QAB1(C)
      • S(i);S_CUTB(h)::QAB1(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).