MESON Chess Problem Database

Problem Display
PID: 204314 (1N6/p5pK/7p/B1k1P3/b3R1rr/3Q2n1/2q3B1/2N1b3 w - - 0 1)

Dohrn-Luttgens, Julius

Funkschach, 1925

1N6/p5pK/7p/B1k1P3/b3R1rr/3Q2n1/2q3B1/2N1b3

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qc4#
    • 1...Qd1
      • 2.Qc4#
    • 1...Qb2
      • 2.Qc4#
    • 1...Qd2
      • 2.Qc4#
    • 1...Qf2
      • 2.Qc4#
    • 1...Qxg2
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Bc3
      • 2.Qc4#
    • 1...Bb5
      • 2.Qd4#
      • 2.Qd6#
    • 1...Bc6
      • 2.Sa6#
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sa6#
      • 1...Qxd3+
        • 2.Sxd3#
      • 1...Qxg2
        • 2.Qd6#
      • 1...Qc4
        • 2.Qd6#
      • 1...Re4
        • 2.Qd6#
      • 1...Rg6
        • 2.Qd5#
      • 1...Bb5
        • 2.Rxb5#
      • 1...Se4
        • 2.Qd4#
      • 1...a6
        • 2.Sxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::QAR1(C)
    • Q(b);N_GUARD,XB(B)::QAR1(C)
    • Q(b);N_GUARD::QAR1(C),XQ(b)
    • B(a);S_CUTQ(b)::QAR1(C)
    • B(d);SBLOCK::S(H)
  • Actual
    • R(D);P_SPINQ(C)
    • Threat
      • S(H)
    • Vars
      • Q(b);CHECK,XQ(C)::S(A),XQ(b)
      • Q(b);N_PINQ(C),XB(B)::QAB1(C)
      • Q(b);N_PINQ(C)::QAB1(C)
      • R(e);N_PINQ(C)::QAB1(C)
      • R(e);N_PINQ(C)::QAR1(C)
      • B(d);N_GUARD::R1(D),XB(d)
      • S(c);N_PINQ(C)::QAB1(C)
      • P(i);::S(H),XP(i)
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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).