MESON Chess Problem Database

Problem Display
PID: 216112 (8/b1p2n2/r3p3/3k4/1P2p3/p1RNP1B1/K3N3/7Q w - - 0 1)

Gajevskis, A

Sachmatija, 2020

8/b1p2n2/r3p3/3k4/1P2p3/p1RNP1B1/K3N3/7Q

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Rc5#
    • 1...Rd6
      • 2.Sef4#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bb8
      • 2.Rc5#
    • 1...Sd6
      • 2.Sef4#
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qb3#
      • 1...exd3
        • 2.Qh1#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Se5
        • 2.Sdf4#
      • 1...e5
        • 2.Sdf4#
      • 1...c5
        • 2.Se5#
      • 1...Rc6
        • 2.Sc5#
      • 1...Sd6
        • 2.Sef4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(d);S_CUTB(f)::R1(D)
    • R(d);SBLOCK::S(C)
    • B(f);N_GUARD::R1(D),XB(f)
    • B(f);N_GUARD::R1(D)
    • S(h);SBLOCK::S(C)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • QAB(A)
    • Vars
      • P(b);OGATEB,P_SPINP(b),XS(E)::QAB(A)
      • B(f);N_GUARD::R1(D),XB(f)
      • S(h);SBLOCK::QAR(A)+S(E),DCHECK
      • P(e);SBLOCK::QAR(A)+S(E),DCHECK
      • P(g);S_CUTB(f)::QAR(A)+S(E)
      • R(d);SBLOCK::QAR(A)+S(E)
      • S(h);SBLOCK::S(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).