MESON Chess Problem Database

Problem Display
PID: 223422 (Q7/K2p2p1/2p5/4Np2/1B1k1p2/1P2rB2/2b1PP2/8 w - - 0 1)

Heyde, Albert

Bruderschaft, 1885

Q7/K2p2p1/2p5/4Np2/1B1k1p2/1P2rB2/2b1PP2/8

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qd5#
    • 1...d5
      • 2.Sxc6#
    • 1...d6
      • 2.Sxc6#
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qd5#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Rxf3
        • 2.Sxf3#
      • 1...Rxe5
        • 2.Bc3#
        • 2.Qc3#
        • 2.Qc4#
      • 1...Bxb3
        • 2.Qc5#
      • 1...dxc6
        • 2.Sxc6#
      • 1...Rc3
        • 2.Bxc3#
        • 2.Qd5#
        • 2.Qxc3#
        • 2.Qd6#
      • 1...Re4
        • 2.Bc3#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Be4
        • 2.Qc5#
      • 1...d5
        • 2.Qxd5#
      • 1...d6
        • 2.Qd5#
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • P(f);OGATE::QAR1(H)
    • P(g);N_GUARD::S(F),XP(f)
  • Actual
    • Q(H);XP(f)
    • Threat
      • DUALS(3)
    • Vars
      • K(c);S_FLIGHT,XS(F)::QAB1(H)
      • R(b);XB(D)::S(F),XR(b)
      • B(a);XP(C)::QAB1(H)
      • P(g);XQ(H)::S(F),XP(g)
      • B(a);::QAB1(H)
      • P(g);::QAR1(H),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).