MESON Chess Problem Database

Problem Display
PID: 271095 (2b1r3/K1BnpN1q/2p4R/1pk3pQ/1p5R/4n3/B7/b1N1r3 w - - 0 1)

Weissauer, Hermann

Schakend Nederland, 1979

2b1r3/K1BnpN1q/2p4R/1pk3pQ/1p5R/4n3/B7/b1N1r3

#2

8 + 13

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qg8
      • 2.Sd3#
    • 1...Qxh6
      • 2.Sd3#
    • 1...Qxf7
      • 2.Sd3#
    • 1...Qg7
      • 2.Sd3#
    • 1...Qh8
      • 2.Sd3#
    • 1...Sd5
      • 2.Sb3#
    • 1...Sf5
      • 2.Sd3#
    • 1...Se5
      • 2.Bb6#
    • 1...Sb6
      • 2.Bxb6#
    • 1...Sf6
      • 2.Bb6#
    • 1...Sb8
      • 2.Bb6#
    • 1...Sf8
      • 2.Bb6#
    • 1...e5
      • 2.Bd6#
    • 1...e6
      • 2.Bd6#
  • Tries
    • 1.Qxg5+?
      • 1...Qf5
        • 2.Sd3#
      • 1...Sd5
        • 2.Sb3#
      • 1...Sf5
        • 2.Sd3#
      • 1...Se5
        • 2.Bb6#
      • 1...e5
        • 2.Bd6#
      • 1...Be5!
  • Keys
    • 1.Sxg5!
      • threat
        • 2.Se6#
      • 1...Sd5
        • 2.Sb3#
      • 1...Sf5
        • 2.Sd3#
      • 1...Se5
        • 2.Bb6#
      • 1...e5
        • 2.Bd6#
      • 1...e6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • Q(k);N_GUARD::S(A),XQ(k)
    • Q(k);N_GUARD::S(A)
    • Q(k);N_GUARD,XR(E)::S(A)
    • Q(k);N_GUARD,XS(H)::S(A)
    • S(c);N_SPINP(g),SBLOCK::S(A)
    • S(c);N_SPINP(g),S_CUTQ(k)::S(A)
    • S(i);N_GUARD,N_SPINP(g)::B(G)
    • S(i);N_GUARD::B(G),XS(i)
    • S(i);N_GUARD::B(G)
    • P(j);N_GUARD,N_SPINP(g)::B(G)
    • P(j);N_GUARD::B(G)
  • Tries
    • Try
      • Q(D);CHECK,XP(g)
      • Vars
        • Q(k);P_SPINQ(k)::S(A)
        • S(c);P_SPINS(c)::S(A)
        • S(i);P_SPINS(i)::B(G)
        • P(j);P_SPINP(j)::B(G)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(H);XP(g)
    • Threat
      • QAR(D)+S(H),DCHECK
    • Vars
      • S(c);SBLOCK::S(A)
      • S(c);S_CUTQ(k)::S(A)
      • S(i);N_GUARD::B(G)
      • P(j);N_GUARD::B(G)
      • P(j);::QAR(D)+S(H),DCHECK,XP(j)
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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).