MESON Chess Problem Database

Problem Display
PID: 231224 (8/K5b1/BR6/3p4/Q2P1p2/P1k2p2/5r2/1b3N2 w - - 0 1)

Svedberg, Erik Daniel

Schackvarlden, 1927

8/K5b1/BR6/3p4/Q2P1p2/P1k2p2/5r2/1b3N2

#2

7 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Rc6#
    • 1...Rc2
      • 2.Rb3#
      • 2.Qb4#
    • 1...Bc2
      • 2.Qb4#
    • 1...Bxd4
      • 2.Qb3#
  • Keys
    • 1.Qd1!
      • threat
        • 2.Rb3#
      • 1...Bxd4
        • 2.Qb3#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Rb2
        • 2.Rc6#
      • 1...Rc2
        • 2.Qd3#
      • 1...Ba2
        • 2.Qd3#
      • 1...Bc2
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::R(F)
    • B(a);SBLOCK::QAB1(C)
    • B(g);P_PINR(F),SBLOCK,XP(D)::QAR1(C)
  • Actual
    • Q(C);
    • Threat
      • R1(F)
    • Vars
      • B(g);P_PINR(F),SBLOCK,XP(D)::QAR1(C)
      • R(b);N_GUARD::QAB1(C),XR(b)
      • B(a);N_GUARD::QAR1(C),XB(a)
      • R(b);SBLOCK::R(F)
      • R(b);S_CUTB(a)::QAR1(C)
      • B(a);N_GUARD::QAR1(C)
      • B(a);OGATE,SBLOCK::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).