MESON Chess Problem Database

Problem Display
PID: 224229 (8/5K2/1p1N4/2k1N3/Q7/4b2p/3nP3/B1r2b2 w - - 0 1)

Drtina, Jan

Svetozor, 1887

8/5K2/1p1N4/2k1N3/Q7/4b2p/3nP3/B1r2b2

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bf4
      • 2.Qd4#
    • 1...Bg5
      • 2.Qd4#
    • 1...Bh6
      • 2.Qd4#
  • Keys
    • 1.Ke6!
      • threat
        • 2.Sd3#
        • 2.Sd7#
        • 2.Sb7#
        • 2.Qb5#
        • 2.Qa3#
      • 1...Rxa1
        • 2.Sd3#
        • 2.Sd7#
        • 2.Sb7#
      • 1...Bxe2
        • 2.Sd7#
        • 2.Sb7#
        • 2.Qa3#
      • 1...b5
        • 2.Qxb5#
      • 1...Rb1
        • 2.Sd3#
        • 2.Sd7#
        • 2.Sb7#
      • 1...Rc3
        • 2.Sd7#
        • 2.Sb7#
      • 1...Rc4
        • 2.Sd3#
        • 2.Sd7#
        • 2.Sb7#
        • 2.Qb5#
      • 1...Bg2
        • 2.Sd3#
        • 2.Sd7#
        • 2.Qb5#
        • 2.Qa3#
      • 1...Sb1
        • 2.Sd3#
        • 2.Sd7#
        • 2.Se4#
        • 2.Sb7#
        • 2.Qb5#
      • 1...Sc4
        • 2.Sd3#
        • 2.Sd7#
        • 2.Se4#
        • 2.Sb7#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(d);N_GUARD::QAB1(C),XB(d)
    • B(d);N_GUARD::QAB1(C)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • DUALS(5)
    • Vars
      • P(g);::QAR1(C),XP(g)
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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).