MESON Chess Problem Database

Problem Display
PID: 194918 (B5nq/K2pB2p/7n/R4P1Q/3kP1p1/1P1p2p1/2pP2P1/8 w - - 0 1)

le Charpentier, C

L'Italia Scacchistica, 1918

B5nq/K2pB2p/7n/R4P1Q/3kP1p1/1P1p2p1/2pP2P1/8

#2

10 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Ra4#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...Sxe7
        • 2.Qc4#
      • 1...d5
        • 2.Qxd5#
      • 1...c1Q
        • 2.Qd5#
      • 1...c1R
        • 2.Qd5#
      • 1...Qe5
        • 2.Ra4#
        • 2.Qc4#
      • 1...Sf6
        • 2.Qc4#
      • 1...Sxf7!
    • 1.f6?
      • threat
        • 2.Bc5#
        • 2.Ra4#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Qxf6
        • 2.Bc5#
        • 2.Ra4#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Sxf6
        • 2.Bc5#
        • 2.Ra4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sxe7
        • 2.Ra4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...d5
        • 2.Ra4#
        • 2.Qxd5#
      • 1...c1Q
        • 2.Qd5#
        • 2.Qe5#
      • 1...c1R
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sf7
        • 2.Bc5#
        • 2.Ra4#
        • 2.Qc5#
        • 2.Qd5#
      • 1...d6
        • 2.Ra4#
        • 2.Qd5#
      • 1...Sf5!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Bc5#
        • 2.Qxd7#
      • 1...Sxf5
        • 2.Bc5#
      • 1...Sxe7
        • 2.Qxh8#
      • 1...d5
        • 2.Bc5#
      • 1...c1Q
        • 2.Qxd7#
      • 1...c1R
        • 2.Qxd7#
      • 1...Qe5
        • 2.Ra4#
      • 1...Qf6
        • 2.Bc5#
      • 1...Sf7
        • 2.Bc5#
      • 1...Sf6
        • 2.Bc5#
      • 1...d6
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • Q(j);SBLOCK::R(E)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);XB(I)::QAR1(G)
        • P(g);::QAR1(G),XP(g)
        • P(a);::QAR1(G)
        • S(i);::QAR1(G)
      • Refutation
        • S(f);XQ(G)
    • Try
      • P(F);
      • Threat
        • DUALS(5)
      • Refutation
        • S(f);
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • S(f);XP(F)::B(I)
      • S(i);OGATE,XB(I)::QAB(G),XQ(j)
      • P(g);::B(I)
      • P(a);::QAR(G),XP(g)
      • Q(j);SBLOCK::R(E)
      • Q(j);::B(I)
      • S(f);::B(I)
      • S(i);::B(I)
      • P(g);OGATE::QAR(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).