MESON Chess Problem Database

Problem Display
PID: 198942 (4n3/8/Q3NrR1/1r2q1p1/2bPRP2/7k/5PN1/3B3K w - - 0 1)

Basisty, Mark Borisovich

Shanshin, Valery Yurevich

Sp. Prize, 64 Shakhmatnoe obozrenie, 2019

4n3/8/Q3NrR1/1r2q1p1/2bPRP2/7k/5PN1/3B3K

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Re3#
    • 1...Qc7
      • 2.Re3#
    • 1...Qb8
      • 2.Re3#
    • 1...Qc5
      • 2.Re3#
    • 1...Qf5
      • 2.Re3#
    • 1...Rf5
      • 2.Rh6#
    • 1...Rf7
      • 2.Rh6#
    • 1...Rf8
      • 2.Rh6#
    • 1...gxf4
      • 2.Bg4#
    • 1...g4
      • 2.Bxg4#
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sxg5#
      • 1...Qxe6
        • 2.Re3#
      • 1...Rxe6
        • 2.Rh6#
      • 1...Bxe6
        • 2.Qc3#
      • 1...gxf4
        • 2.Sexf4#
        • 2.Sg5#
        • 2.Bg4#
      • 1...g4
        • 2.Bxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(d);N_GUARD::R(F)
    • R(f);N_GUARD::R(J)
    • P(e);XP(G)::B(A)
    • P(e);::B(A),XP(e)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+S(I),DCHECK,XP(e)
    • Vars
      • Q(d);N_GUARD,P_SPINQ(d),XS(I)::R(F)
      • R(f);N_GUARD,P_SPINR(f),XS(I)::R(J)
      • B(b);OGATE,P_SPINB(b),XS(I)::QAR(H)
      • P(e);::B(A),XP(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).