MESON Chess Problem Database

Problem Display
PID: 253705 (4Q3/2bpp2b/q3k3/R5p1/2pBNp2/5P2/2B3K1/8 w - - 0 1)

Gajevskis, A

Sachmatija, 2021

4Q3/2bpp2b/q3k3/R5p1/2pBNp2/5P2/2B3K1/8

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sxg5#
    • 1...Be5
      • 2.Rxe5#
    • 1...Bb6
      • 2.Re5#
    • 1...Bd6
      • 2.Sxg5#
    • 1...Bd8
      • 2.Re5#
    • 1...Bf5
      • 2.Qg8#
    • 1...Bg6
      • 2.Qxg6#
    • 1...Bg8
      • 2.Qg6#
      • 2.Qxg8#
    • 1...d6
      • 2.Sxg5#
  • Tries
    • 1.Sc5+?
      • 1...Kd6
        • 2.Qxd7#
      • 1...Kd5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qf7#
      • 1...Kxf5
        • 2.Sc5#
      • 1...Bxf5
        • 2.Qg8#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Bg8
        • 2.Qg6#
      • 1...d5
        • 2.Rf6#
      • 1...d6
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(d);SBLOCK::S(E),XP(c)
    • B(f);N_GUARD::R1(F),XB(f)
    • B(f);N_GUARD::R1(F)
    • B(f);SBLOCK::S(E),XP(c)
    • B(i);N_GUARD::QAB(G)
    • B(i);N_GUARD::QAR2(G),XB(i)
    • P(g);SBLOCK::S(E),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);N_GUARD,N_SPINP(h),P-FLIGHT::QAR1(G),XP(g)
      • Refutation
        • K(e);N_SPINP(h),S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • QAB1(G)
    • Vars
      • K(e);N_GUARD,N_SPINP(h),S_FLIGHT,XR(F)::B(A)+S(E)
      • B(i);N_GUARD,SBLOCK,XR(F)::QAB(G)
      • B(i);N_GUARD::QAR2(G),XB(i)
      • B(i);N_GUARD::QAR2(G)
      • P(g);SBLOCK::R1(F)
      • P(g);SBLOCK::S(E),XP(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).