MESON Chess Problem Database

Problem Display
PID: 142874 (5Q2/7p/4N1r1/4k3/2P2NR1/r1p2K2/p3P3/B7 w - - 0 1)

Dupuis, T

1st Comm., La Cle 05. Beginners' Ty., 1971

5Q2/7p/4N1r1/4k3/2P2NR1/r1p2K2/p3P3/B7

#2

8 + 6

274 diagrammes 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Bxc3#
    • 1...Ra5
      • 2.Bxc3#
    • 1...Ra6
      • 2.Bxc3#
    • 1...Ra7
      • 2.Bxc3#
    • 1...Ra8
      • 2.Bxc3#
    • 1...Rg5
      • 2.Rxg5#
    • 1...Rxe6
      • 2.Sd3#
    • 1...Rf6
      • 2.Qc5#
    • 1...Rh6
      • 2.Rg5#
  • Tries
    • 1.Sxg6+?
      • 1...hxg6
        • 2.Re4#
      • 1...Kxe6!
    • 1.Sd8?
      • threat
        • 2.Sd3#
      • 1...Kd4
        • 2.Sxg6#
      • 1...Rxg4
        • 2.Sc6#
      • 1...Rf6
        • 2.Qc5#
      • 1...Rd6!
    • 1.Rxg6?
      • threat
        • 2.Sd3#
        • 2.Rg5#
        • 2.Qc5#
      • 1...Ra5
        • 2.Sd3#
        • 2.Bxc3#
        • 2.Rg5#
      • 1...h6
        • 2.Sd3#
        • 2.Qc5#
      • 1...hxg6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sd3#
      • 1...c2+
        • 2.Sb3#
      • 1...Kxd4
        • 2.Sxg6#
      • 1...Rxg4
        • 2.Sc6#
      • 1...Rf6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::B(A),XP(c)
    • R(e);N_GUARD::R(F),XR(e)
    • R(e);SBLOCK,XS(G)::S(E)
    • R(e);P_PINS(E),SBLOCK::QAR2(H)
    • R(e);N_GUARD::R(F)
  • Tries
    • Try
      • S(E);CHECK,XR(e)
      • Vars
        • P(f);XS(E)::R1(F)
      • Refutation
        • K(d);N_SPINP(c),P-FLIGHT,XS(G)
    • Try
      • S(G);
      • Threat
        • S(E)
      • Vars
        • K(d);S_FLIGHT::R(F)+S(E),XR(e)
        • R(e);N_GUARD,XR(F)::S(G)
        • R(e);P_PINS(E),SBLOCK::QAR2(H)
      • Refutation
        • R(e);
    • Try
      • R(F);XR(e)
      • Threat
        • DUALS(3)
      • Refutation
        • P(f);XR(F)
  • Actual
    • S(G);N_PINP(c)
    • Threat
      • S(E)
    • Vars
      • P(c);CHECK::B(A)+S(G)
      • K(d);P_SPINP(c),S_FLIGHT,XS(G)::R(F)+S(E),XR(e)
      • R(e);N_GUARD,XR(F)::S(G)
      • R(e);P_PINS(E),SBLOCK::QAR2(H)
HTML5 logo

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).