MESON Chess Problem Database

Problem Display
PID: 78436 (Q7/5pq1/1P6/1K1NR1n1/2Pkb3/1p4B1/p2PP3/b7 w - - 0 1)

Grossi, Damien

diagrammes, 1975

Q7/5pq1/1P6/1K1NR1n1/2Pkb3/1p4B1/p2PP3/b7

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Bf2#
    • 1...Bc3
      • 2.dxc3#
    • 1...Bd3
      • 2.e3#
    • 1...Bxd5
      • 2.Qxd5#
  • Tries
    • 1.Sb4?
      • threat
        • 2.e3#
      • 1...Bc6+
        • 2.Sxc6#
      • 1...Qxe5+!
    • 1.c5?
      • threat
        • 2.Qa4#
      • 1...Qxe5
        • 2.Bf2#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Bc3
        • 2.dxc3#
      • 1...Bd3+!
  • Keys
    • 1.Qa4!
      • threat
        • 2.c5#
      • 1...Qxe5
        • 2.Bf2#
      • 1...Bxd5
        • 2.cxd5#
      • 1...Bc3
        • 2.dxc3#
      • 1...Bd3
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(h);P_PINS(F),SBLOCK,XR(G)::B(C)
    • B(a);OGATE::P(A),XB(a)
    • B(e);P_PINP(D),SBLOCK::P(B)
    • B(e);OGATE,XS(F)::QAR1(I),XB(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • P(B)
      • Vars
        • B(e);CHECK,N_GUARD::S(F),XB(e)
      • Refutation
        • Q(h);CHECK,XR(G)
    • Try
      • P(D);
      • Threat
        • QAR(I)
      • Vars
        • Q(h);SBLOCK,XR(G)::B(C)
        • B(e);OGATE,XS(F)::QAR1(I),XB(e)
        • B(a);OGATE::P(A),XB(a)
      • Refutation
        • B(e);CHECK
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+P(D)
    • Vars
      • Q(h);P_PINS(F),SBLOCK,XR(G)::B(C)
      • B(e);OGATE,XS(F)::QAR(I)+P(D),XB(e)
      • B(a);OGATE::P(A),XB(a)
      • B(e);P_PINP(D),SBLOCK::P(B)
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).