MESON Chess Problem Database

Problem Display
PID: 175243 (8/1p6/1B2p1K1/1Q5N/1p2kPp1/2r5/2p5/b1Nb4 w - - 0 1)

Koetsheid, Petrus Albertus

The Times, 1902

8/1p6/1B2p1K1/1Q5N/1p2kPp1/2r5/2p5/b1Nb4

#2

6 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxd3#
    • 1...Rc5
      • 2.Qd3#
    • 1...Rc6
      • 2.Qd3#
    • 1...Rc7
      • 2.Qd3#
    • 1...Rc8
      • 2.Qd3#
    • 1...Bf3
      • 2.Qe5#
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxb7#
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.Sf6#
      • 1...Rxc5
        • 2.Qd3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...b6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::QAB1(C),XR(d)
    • R(d);N_GUARD::QAB1(C)
    • B(b);SBLOCK::QAR1(C)
  • Actual
    • B(E);
    • Threat
      • QAB(C),XP(i)
    • Vars
      • K(f);S_FLIGHT::QAB(C),XP(i)
      • K(f);S_FLIGHT::S(D)
      • R(d);N_GUARD,XB(E)::QAB1(C)
      • R(d);N_GUARD::QAB1(C),XR(d)
      • P(i);N_GUARD::QAB(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).