MESON Chess Problem Database

Problem Display
PID: 214813 (8/4p1KB/r1p4p/2BN1R2/1p2k1p1/2p2N2/2Pn2rn/2bR1b1q w - - 0 1)

Makaronets, Leonid

Best Problems, 2020

8/4p1KB/r1p4p/2BN1R2/1p2k1p1/2p2N2/2Pn2rn/2bR1b1q

#2

8 + 14

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rd4#
      • 2.Rf4#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Sb3
      • 2.Rf4#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Sdxf3
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sc4
      • 2.Rd4#
      • 2.Rf4#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...Shxf3
      • 2.Rg5#
      • 2.Rh5#
    • 1...b3
      • 2.Sxc3#
    • 1...gxf3+
      • 2.Rg5#
    • 1...cxd5
      • 2.Rf6#
    • 1...h5
      • 2.Sg5#
    • 1...e5
      • 2.Sf6#
    • 1...e6
      • 2.Sf6#
  • Keys
    • 1.Kxh6!
      • threat
        • 2.Sg5#
      • 1...Sb1+
        • 2.Rf4#
      • 1...Sb3+
        • 2.Rf4#
      • 1...Sdxf3+
        • 2.Rg5#
      • 1...Sc4+
        • 2.Rf4#
      • 1...Shxf3+
        • 2.Rh5#
      • 1...cxd5+
        • 2.Rf6#
      • 1...gxf3
        • 2.Rg5#
      • 1...e5
        • 2.Sf6#

Anticipated by 5966(1926)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • P(h);N_GUARD::S(E),XP(g)
    • P(j);CHECK,SBLOCK,XS(C)::B(H)+R(F)
    • P(l);SBLOCK,XS(E)::B(H)+R(F)
    • P(m);N_GUARD::S(C)
    • P(n);N_GUARD::S(E)
  • Actual
    • K(G);S_FLIGHT,XP(m)
    • Threat
      • S(C)
    • Vars
      • S(d);CHECK::B(H)+R(F),DCHECK
      • S(d);CHECK,SBLOCK,XS(C)::B(H)+R(F)
      • S(f);CHECK,SBLOCK,XS(C)::B(H)+R(F)
      • P(l);CHECK,SBLOCK,XS(E)::B(H)+R(F)
      • P(j);SBLOCK,XS(C)::B(H)+R(F)
      • P(n);N_GUARD::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).