MESON Chess Problem Database

Problem Display
PID: 186960 (2rn1Q2/2p2q1R/R1p5/1NBk1Bb1/3P1P2/1P2K2N/n7/8 w - - 0 1)

Ernst, Erich

Badisches Tagblatt, 2000

2rn1Q2/2p2q1R/R1p5/1NBk1Bb1/3P1P2/1P2K2N/n7/8

#2

11 + 8

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Rd7#
    • 1...Qg8
      • 2.Rd7#
    • 1...Qxf5
      • 2.Qxf5#
    • 1...Qd7
      • 2.Rxd7#
    • 1...Bxf4+
      • 2.Sxf4#
    • 1...Sc1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sc3#
    • 1...Se6
      • 2.Be4#
    • 1...Sb7
      • 2.Qxf7#
    • 1...cxb5
      • 2.Be4#
  • Tries
    • 1.Sxc7+?
      • 1...Rxc7
        • 2.Qd6#
      • 1...Qxc7!
    • 1.Qxf7+?
      • 1...Se6
        • 2.Be4#
        • 2.Bxe6#
        • 2.Qxe6#
        • 2.Qd7#
      • 1...Sxf7!
  • Keys
    • 1.Qg8!
      • 1...Qe6+
        • 2.Be4#
      • 1...Bxf4+
        • 2.Sxf4#
      • 1...Qxg8
        • 2.Rd7#
      • 1...cxb5
        • 2.Be4#
      • 1...Ra8
        • 2.Sxc7#
      • 1...Rb8
        • 2.Sxc7#
      • 1...Bh4
        • 2.Qg2#
      • 1...Bf6
        • 2.Qg2#
      • 1...Bh6
        • 2.Qg2#
      • 1...Be7
        • 2.Qg2#
      • 1...Sc1
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sc3#
      • 1...Se6
        • 2.Be4#
      • 1...Sb7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • Q(f);OGATE::R(J)
    • Q(f);OGATE,XB(H)::QAR2(K),XQ(f)
    • Q(f);OGATE::R(J),XQ(f)
    • B(c);CHECK,XP(E)::S(C),XB(c)
    • S(a);N_GUARD::S(F)
    • S(a);N_GUARD::S(F),XS(a)
    • S(h);SBLOCK::B(H)
    • S(h);N_GUARD::QAB(K),XQ(f)
    • P(d);XS(F)::B(H)
  • Tries
    • Try
      • S(F);CHECK,XP(e)
      • Vars
        • R(g);XS(F)::QAR1(K)
      • Refutation
        • Q(f);XS(F)
    • Try
      • Q(K);CHECK,XQ(f)
      • Refutation
        • S(h);XQ(K)
  • Actual
    • Q(K);P_PINQ(f)
    • Vars
      • Q(f);CHECK::B(H)
      • B(c);CHECK,XP(E)::S(C),XB(c)
      • Q(f);N_SPINQ(f),OGATE,XQ(K)::R(J)
      • P(d);XS(F)::B(H)
      • R(g);N_GUARD::S(F),XP(e)
      • B(c);N_PINP(E),OGATE::QAB(K)
      • B(c);OGATE::QAB(K)
      • S(a);N_GUARD::S(F)
      • S(a);N_GUARD::S(F),XS(a)
      • S(h);N_SPINQ(f),SBLOCK::B(H)
      • S(h);N_GUARD::QAB(K),XQ(f)
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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).