MESON Chess Problem Database

Problem Display
PID: 90641 (B6Q/2Kppp2/2pr1P1P/4k3/N4pP1/3n1P2/1R6/B2R4 w - - 0 1)

Buchwald, Julius

Nanning, Frederik Willem

Die Schwalbe, 1954

B6Q/2Kppp2/2pr1P1P/4k3/N4pP1/3n1P2/1R6/B2R4

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Re2#
    • 1...Re6
      • 2.Rb5#
    • 1...Sc1
      • 2.Re2#
    • 1...Se1
      • 2.Re2#
    • 1...Sf2
      • 2.Re2#
    • 1...Sb4
      • 2.Re2#
    • 1...Sc5
      • 2.Re2#
    • 1...c5
      • 2.Re2#
    • 1...e6
      • 2.Rb5#
  • Keys
    • 1.Qh7!
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kxf6
        • 2.Qf5#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Sxb2
        • 2.Qf5#
      • 1...exf6
        • 2.Qe4#
      • 1...Rd4
        • 2.Qf5#
      • 1...Rd5
        • 2.Re2#
      • 1...Re6
        • 2.Rb5#
      • 1...Sc1
        • 2.Re2#
        • 2.Qf5#
      • 1...Se1
        • 2.Re2#
        • 2.Qf5#
      • 1...Sf2
        • 2.Re2#
        • 2.Qf5#
      • 1...Sb4
        • 2.Re2#
        • 2.Qf5#
      • 1...Sc5
        • 2.Re2#
        • 2.Qf5#
      • 1...c5
        • 2.Re2#
      • 1...e6
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • R(e);SBLOCK::B(A)+R(C),DCHECK
    • S(a);::B(A)+R(C),DCHECK
    • P(d);::B(A)+R(C),DCHECK
    • P(g);SBLOCK::B(A)+R(C),DCHECK
  • Actual
    • Q(K);
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT::QAR1(K)
      • K(c);P-FLIGHT,P_SPINP(d),P_SPINS(a)::QAB1(K)
      • K(c);P-FLIGHT::QAB1(K)
      • K(c);S_FLIGHT,XP(G)::QAR1(K)
      • R(e);SBLOCK,XP(G)::QAR1(K)
      • S(a);P_SPINS(a),XR(C)::QAR1(K)
      • P(g);SBLOCK,XP(G)::QAR1(K)
      • R(e);SBLOCK::QAR1(K)
      • R(e);SBLOCK::B(A)+R(C),DCHECK
      • P(d);::B(A)+R(C),DCHECK
      • P(g);SBLOCK::B(A)+R(C),DCHECK
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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).