MESON Chess Problem Database

Problem Display
PID: 198304 (5R2/p4N2/4b3/KQ3p1r/1P2P1P1/R2N1k2/4p1pP/1B1nrqB1 w - - 0 1)

Marin y Llovet, Valentin

Comm., Spanish National Ty., 1920

5R2/p4N2/4b3/KQ3p1r/1P2P1P1/R2N1k2/4p1pP/1B1nrqB1

#2

12 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...fxe4
      • 2.Sfe5#
    • 1...fxg4
      • 2.Sg5#
    • 1...f4
      • 2.Sde5#
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qf4#
      • 1...fxe4+
        • 2.Sfe5#
      • 1...fxg4+
        • 2.Sg5#
      • 1...f4+
        • 2.Sde5#
      • 1...Kxe4
        • 2.Sf4#
      • 1...Kxg4
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(g);P_PINQ(J),SBLOCK,XP(G)::R(L)+S(K),DCHECK
    • P(g);P_PINQ(J),SBLOCK,XP(H)::R(L)+S(K),DCHECK
    • P(g);P_PINQ(J),SBLOCK::R(D)+S(E),DCHECK
  • Actual
    • Q(J);
    • Threat
      • QAR1(J)
    • Vars
      • P(g);CHECK,SBLOCK,XP(G)::R(L)+S(K),DCHECK
      • P(g);CHECK,SBLOCK,XP(H)::R(L)+S(K),DCHECK
      • P(g);CHECK,SBLOCK::R(D)+S(E),DCHECK
      • K(f);S_FLIGHT,XP(G)::B(A)+S(E)
      • K(f);S_FLIGHT,XP(H)::QAR1(J)
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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).