MESON Chess Problem Database

Problem Display
PID: 274811 (4RB2/3B4/3N3K/1p1k1N2/8/n1rbP3/1Q1n4/b1qR4 w - - 0 1)

von Pittler, Wolfgang

Die Schwalbe, 1933

4RB2/3B4/3N3K/1p1k1N2/8/n1rbP3/1Q1n4/b1qR4

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Re5#
    • 1...Rb3
      • 2.Re5#
    • 1...Rc4
      • 2.Re5#
    • 1...Rc5
      • 2.Re5#
    • 1...Rc6
      • 2.Re5#
    • 1...Rc7
      • 2.Re5#
    • 1...Rc8
      • 2.Re5#
    • 1...Sc4
      • 2.Qxb5#
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Be6#
      • 1...Rxc4
        • 2.Re5#
      • 1...Bxc4
        • 2.e4#
      • 1...Sdxc4
        • 2.Qg2#
      • 1...Saxc4
        • 2.Qxb5#
      • 1...bxc4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(e);::R1(H)
    • R(e);SBLOCK::R1(H)
    • R(e);P_PINS(E)::R1(H)
    • S(d);N_GUARD,S_CUTB(f),S_CUTR(e)::QAR2(B),XP(g)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(h);N_GUARD,S_FLIGHT,XS(E)::B(G)
      • R(e);SBLOCK,XS(E)::R1(H)
      • B(f);N_GUARD,P_SPINS(c),SBLOCK,XS(E)::P(C)
      • S(c);OGATE,P_PINP(C),P_SPINB(f),SBLOCK,XS(E)::QAB(B)
      • S(d);N_GUARD,XS(E)::QAR2(B),XP(g)
      • P(g);OGATE,SBLOCK,XS(E)::QAB(B)
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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).