MESON Chess Problem Database

Problem Display
PID: 162686 (b5B1/3p1r2/r7/1R2p2Q/3kn2R/p4p1n/2PN3b/3N1K2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Welt im Bild, 1937

b5B1/3p1r2/r7/1R2p2Q/3kn2R/p4p1n/2PN3b/3N1K2

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Rxe4#
    • 1...Rf4
      • 2.Sb3#
      • 2.Qxe5#
    • 1...Rf5
      • 2.Sb3#
    • 1...Rf6
      • 2.Sb3#
    • 1...Re7
      • 2.Sb3#
      • 2.Sxf3#
    • 1...Rg7
      • 2.Sb3#
      • 2.Sxf3#
    • 1...Rh7
      • 2.Sb3#
      • 2.Sxf3#
    • 1...Rf8
      • 2.Sb3#
    • 1...Bg1
      • 2.Qxe5#
    • 1...Sf4
      • 2.Qxe5#
  • Keys
    • 1.Qxf3!
      • threat
        • 2.c3#
      • 1...Rxf3+
        • 2.Sxf3#
      • 1...Rc6
        • 2.Rxe4#
      • 1...Rf4
        • 2.Sb3#
      • 1...Bf4
        • 2.Qd3#
      • 1...Sf4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(h);S_CUTB(k)::R1(E),XS(f)
    • R(j);::S(D)
    • B(a);N_GUARD::QAB1(G),XP(g)
    • S(d);N_SPINS(f),S_CUTB(a)::QAB1(G),XP(g)
  • Actual
    • Q(G);P_SPINQ(G),XP(c)
    • Threat
      • P(C)
    • Vars
      • R(j);CHECK,XQ(G)::S(D),XR(j)
      • R(h);S_CUTB(k)::R1(E),XS(f)
      • R(j);N_SPINS(f)::S(D)
      • B(a);N_PINQ(G),N_SPINS(f)::QAR1(G)
      • S(d);N_PINQ(G),N_SPINS(f)::QAB1(G)
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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).