MESON Chess Problem Database

Problem Display
PID: 208083 (6r1/3N2p1/2rR1b1P/3pqp2/B3k3/2ppPp2/2n5/3K1NQb w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1987

6r1/3N2p1/2rR1b1P/3pqp2/B3k3/2ppPp2/2n5/3K1NQb

#2

8 + 13

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Sxg3#
    • 1...Qd4
      • 2.Sg3#
    • 1...Qe6
      • 2.Sg3#
    • 1...Qe7
      • 2.Sg3#
    • 1...Qe8
      • 2.Sg3#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Ra6
      • 2.Sc5#
    • 1...Rb6
      • 2.Sc5#
    • 1...Rxd6
      • 2.Sc5#
    • 1...Sxe3+
      • 2.Qxe3#
    • 1...d2
      • 2.Bxc2#
    • 1...f2
      • 2.Qxh1#
  • Keys
    • 1.Re6!
      • threat
        • 2.Sg3#
      • 1...Sxe3+
        • 2.Qxe3#
      • 1...Rxe6
        • 2.Sc5#
      • 1...gxh6
        • 2.Sxf6#
      • 1...d2
        • 2.Bxc2#
      • 1...f2
        • 2.Qxh1#
      • 1...d4
        • 2.Bxc6#
      • 1...f4
        • 2.Qg6#
      • 1...Bh4
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(h);N_GUARD::S(B),XQ(h)
    • Q(h);N_GUARD::S(B)
    • R(j);N_GUARD::S(H),XR(j)
    • R(j);N_GUARD::S(H)
    • R(j);N_GUARD,XR(F)::S(H)
    • S(b);CHECK,OGATE,XP(D)::QAR1(C),XS(b)
    • P(d);OGATEB::B(E),XS(b)
    • P(e);OGATEB::QAB(C),XB(a)
  • Actual
    • R(F);P_PINQ(h)
    • Threat
      • S(B)
    • Vars
      • S(b);CHECK,OGATE,XP(D)::QAR1(C),XS(b)
      • R(j);N_GUARD,N_SPINQ(h),XR(F)::S(H)
      • P(l);N_GUARD,XP(G)::S(H),XB(k)
      • P(d);OGATEB::B(E),XS(b)
      • P(e);OGATEB::QAB(C),XB(a)
      • P(g);OGATEB::B(E),XR(j)
      • P(i);OGATEB::QAB(C)
      • B(k);N_GUARD::R1(F),XQ(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).