MESON Chess Problem Database

Problem Display
PID: 210157 (4k1NR/2pp1NP1/3p1pP1/4q3/2P2Pp1/3RB1K1/2P5/4Q3 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2020

4k1NR/2pp1NP1/3p1pP1/4q3/2P2Pp1/3RB1K1/2P5/4Q3

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Bd4#
    • 1...Qd4
      • 2.Bxd4#
    • 1...Qxf4+
      • 2.Bxf4#
    • 1...Qxe3+
      • 2.Rxe3#
      • 2.Qxe3#
    • 1...Qb5
      • 2.Bc5#
    • 1...Qc5
      • 2.Bxc5#
    • 1...Qe7
      • 2.Sxf6#
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rb8#
      • 1...Qxf4+
        • 2.Bxf4#
      • 1...Qxe3+
        • 2.Rxe3#
        • 2.Qxe3#
      • 1...Qb2
        • 2.Bd4#
      • 1...Qb5
        • 2.Bc5#
      • 1...Qe7
        • 2.Sxf6#

This is a version of 210156

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_PINP(G),OGATEB::QAR(A)+B(D)
    • Q(b);N_PINP(G),OGATEB::QAR(A)+B(D),XQ(b)
    • Q(b);CHECK,OGATE,XP(G)::QAR(A)+B(D),XQ(b)
    • Q(b);N_PINP(G),SBLOCK::R(L)+S(K),DCHECK,XP(d)
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • Q(b);CHECK,OGATE,XP(G)::QAR(A)+B(D),XQ(b)
      • Q(b);N_PINP(G),OGATEB::QAR(A)+B(D)
      • Q(b);N_PINP(G),SBLOCK::R(L)+S(K),DCHECK,XP(d)
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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).