MESON Chess Problem Database

Problem Display
PID: 271275 (1N1nQ3/5pq1/1p1p4/2bk1p2/N1r2Rp1/n1B1p1K1/8/1r3B2 w - - 0 1)

Howard, Kenneth Samuel

Die Schwalbe, 1932

1N1nQ3/5pq1/1p1p4/2bk1p2/N1r2Rp1/n1B1p1K1/8/1r3B2

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Rxf5#
    • 1...Qf8
      • 2.Rxf5#
    • 1...Qg8
      • 2.Rxf5#
    • 1...Rxc3
      • 2.Bg2#
    • 1...Bd4
      • 2.Bg2#
    • 1...Sc2
      • 2.Bxc4#
    • 1...Sb5
      • 2.Bxc4#
    • 1...Se6
      • 2.Qc6#
    • 1...f6
      • 2.Rxf5#
  • Keys
    • 1.Sa6!
      • threat
        • 2.Sc7#
      • 1...Bb4
        • 2.Sxb6#
      • 1...Bd4
        • 2.Bg2#
      • 1...Sb5
        • 2.Bxc4#
      • 1...Se6
        • 2.Qa8#
      • 1...f6
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(l);N_GUARD::R(E),XP(h)
    • R(d);N_GUARD,XB(B)::B(A)
    • B(f);S_CUTR(d)::B(A)
    • S(b);N_GUARD::B(A),XR(d)
    • S(m);N_GUARD,SBLOCK::QAB1(G)
    • P(k);S_CUTQ(l)::R(E),XP(h)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(f);N_GUARD,S_CUTR(a)::S(D),XP(i)
      • B(f);S_CUTR(d)::B(A)
      • S(b);N_GUARD::B(A),XR(d)
      • S(m);OGATE,SBLOCK::QAB(G)
      • P(k);S_CUTQ(l)::R(E),XP(h)
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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).