MESON Chess Problem Database

Problem Display
PID: 215681 (q1Q1N3/1p5B/6Pk/8/1n2P2K/PP6/3R3P/3b3r w - - 0 1)

Dohrn-Luttgens, Julius

Funkschach, 1926

q1Q1N3/1p5B/6Pk/8/1n2P2K/PP6/3R3P/3b3r

#2

10 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Keys
    • 1.Qc1!
      • threat
        • 2.Rxd1#
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rd3#
        • 2.Rd4#
        • 2.Rd5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Qd8+
        • 2.Rxd8#
      • 1...Rxh2+
        • 2.Rxh2#
      • 1...Qxa3
        • 2.Rb2#
      • 1...Qxe8
        • 2.Rd7#
      • 1...Bxb3
        • 2.Rd1#
      • 1...Qa5
        • 2.Rd5#
      • 1...Qa7
        • 2.Rd4#
      • 1...Qb8
        • 2.Rd6#
      • 1...Qc8
        • 2.Rc2#
      • 1...Re1
        • 2.Re2#
      • 1...Rf1
        • 2.Rf2#
      • 1...Rg1
        • 2.Rg2#
      • 1...Bc2
        • 2.Rd1#
      • 1...Be2
        • 2.Rd1#
      • 1...Bf3
        • 2.Rd1#
      • 1...Bg4
        • 2.Rd1#
      • 1...Bh5
        • 2.Rd1#
      • 1...Sa2
        • 2.Rxa2#
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(I);
    • Threat
      • DUALS(13)
    • Vars
      • Q(f);CHECK::QAB(I)+R(A),XQ(f)
      • R(b);CHECK,OGATE,XP(B)::QAB(I)+R(A),XR(b)
      • Q(f);XP(C)::QAB(I)+R(A)
      • Q(f);XS(J)::QAB(I)+R(A)
      • B(a);XP(D)::QAB(I)+R(A)
      • Q(f);::QAB(I)+R(A)
      • Q(f);SBLOCK::QAB(I)+R(A)
      • R(b);N_PINP(B)::QAB(I)+R(A)
      • B(a);::QAB(I)+R(A)
      • S(c);::QAB(I)+R(A),XS(c)
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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).