MESON Chess Problem Database

Problem Display
PID: 272393 (2B4b/1K3N1b/2pp2nr/pk3p1R/6nr/BP3N2/7q/8 w - - 0 1)

Endrell, Gunnar

Schackvarlden, 1940

2B4b/1K3N1b/2pp2nr/pk3p1R/6nr/BP3N2/7q/8

#2

7 + 12

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxd6#
    • 1...Qh1
      • 2.Sxd6#
    • 1...Qa2
      • 2.Sxd6#
    • 1...Qb2
      • 2.Sxd6#
    • 1...Qc2
      • 2.Sxd6#
    • 1...Qe2
      • 2.Sxd6#
    • 1...Qf2
      • 2.Sxd6#
    • 1...Qg2
      • 2.Sxd6#
    • 1...Qh3
      • 2.Sxd6#
    • 1...Bd4
      • 2.Sxd4#
    • 1...S4e5
      • 2.Sxd6#
    • 1...S6e5
      • 2.Sd4#
    • 1...c5
      • 2.Bd7#
  • Tries
    • 1.Rxf5+?
      • 1...Qe5
        • 2.Sd4#
        • 2.Sxd6#
      • 1...Be5
        • 2.Sd4#
        • 2.Sxd6#
      • 1...S4e5
        • 2.Sxd6#
      • 1...S6e5
        • 2.Sd4#
      • 1...c5
        • 2.Bd7#
      • 1...d5!
  • Keys
    • 1.Bxf5!
      • threat
        • 2.Bd3#
      • 1...S4e5
        • 2.Sxd6#
      • 1...S6e5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::S(F),XP(h)
    • B(l);N_GUARD::S(C),XB(l)
    • S(b);N_SPINP(f),S_CUTQ(a)::S(F),XP(h)
    • S(i);N_SPINP(f),S_CUTB(l)::S(C)
    • P(g);N_SPINP(f),OGATEB::B(G)
  • Tries
    • Try
      • R(D);CHECK,XP(f)
      • Vars
        • S(b);P_SPINS(b)::S(F),XP(h)
        • S(i);P_SPINS(i)::S(C)
        • P(g);P_SPINP(g),S_CUTB(l),S_CUTP(h),S_CUTQ(a),S_CUTS(b),S_CUTS(i)::B(G)
      • Refutation
        • P(h);P_SPINP(h)
  • Actual
    • B(G);XP(f)
    • Threat
      • R(D)+B(G),DCHECK
    • Vars
      • S(b);S_CUTQ(a)::S(F),XP(h)
      • S(i);S_CUTB(l)::S(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).