MESON Chess Problem Database

Problem Display
PID: 121525 (3Q4/1R5r/4N2r/7p/4kBP1/1P1p4/5b2/3K4 w - - 0 1)

Drnek, Josef

Nove parizske mody, 1906

3Q4/1R5r/4N2r/7p/4kBP1/1P1p4/5b2/3K4

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Qa8!
      • threat
        • 2.Rb4#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rxh7#
      • 1...Kf3
        • 2.Rg7#
      • 1...Kd5
        • 2.Re7#
      • 1...Rxe6
        • 2.Rb4#
      • 1...Rxb7
        • 2.Qxb7#
      • 1...hxg4
        • 2.Rf7#
      • 1...d2
        • 2.Rd7#
      • 1...Rc7
        • 2.Rb4#
        • 2.Rxc7#
      • 1...Rd7
        • 2.Rb4#
        • 2.Rxd7#
      • 1...Re7
        • 2.Rb4#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Rxe7#
      • 1...Rf7
        • 2.Rb4#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rxf7#
      • 1...Rg7
        • 2.Rb4#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rxg7#
      • 1...Rh8
        • 2.Rb4#
        • 2.Rb8#
      • 1...Bd4
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rxh7#
      • 1...Bb6
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(G);
    • Threat
      • DUALS(7)
    • Vars
      • K(c);S_FLIGHT::QAB(G)+R(F)
      • R(e);XS(E)::QAB(G)+R(F),DCHECK
      • R(f);OGATE,P_SPINR(f),XR(F)::QAB(G),XR(f)
      • P(d);XP(D)::QAB(G)+R(F)
      • P(b);::QAB(G)+R(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).