MESON Chess Problem Database

Problem Display
PID: 90036 (3B3K/P4B1p/p7/5b2/k1NnR3/p3bq2/8/1R3Q2 w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 1994

3B3K/P4B1p/p7/5b2/k1NnR3/p3bq2/8/1R3Q2

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Sb2#
    • 1...Se2
      • 2.Qd1#
    • 1...Sb3
      • 2.Sb2#
    • 1...Sb5
      • 2.Sb2#
    • 1...Sc6
      • 2.Sb2#
    • 1...Se6
      • 2.Be8#
    • 1...a5
      • 2.Sb6#
  • Tries
    • 1.Sb2+?
      • 1...Kb4
        • 2.Qc4#
      • 1...axb2!
    • 1.Qd1+?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Qxd1!
  • Keys
    • 1.a8S!
      • threat
        • 2.Sab6#
      • 1...Sb3
        • 2.Sb2#
      • 1...Sc2
        • 2.Sb2#
      • 1...Se2
        • 2.Qd1#
      • 1...Sb5
        • 2.Sb2#
      • 1...Sc6
        • 2.Sb2#
      • 1...Se6
        • 2.Be8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(e);::R(D)+S(C),DCHECK
    • S(e);N_GUARD,S_CUTQ(c)::QAB(B)
    • S(e);N_GUARD,S_CUTB(f)::B(F)
    • P(g);SBLOCK::S(C)
  • Tries
    • Try
      • S(C);CHECK,P_PINS(e)
      • Vars
        • K(d);P-FLIGHT::QAR1(B)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB(B),XS(e)
        • S(e);N_GUARD,P_SPINS(e)::QAB1(B),XS(e)
      • Refutation
        • Q(c);XQ(B)
  • Actual
    • P(E);
    • Threat
      • S(E)
    • Vars
      • S(e);::R(D)+S(C),DCHECK
      • S(e);N_GUARD,S_CUTQ(c)::QAB(B)
      • S(e);N_GUARD,S_CUTB(f)::B(F)
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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).