MESON Chess Problem Database

Problem Display
PID: 71891 (K1kb4/1R1n4/Pp3n2/3b4/N4QRB/4p1qB/8/8 w - - 0 1)

Savournin, Jacques

Comm., Bouttier TT, 1971-1972

K1kb4/1R1n4/Pp3n2/3b4/N4QRB/4p1qB/8/8

#2

8 + 8

6124 Lignes et Figures 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb7+
      • 2.axb7#
  • Tries
    • 1.Qb8+?
      • 1...Sxb8
        • 2.Rc4#
      • 1...Qxb8+!
  • Keys
    • 1.Rg8!
      • threat
        • 2.Sxb6#
      • 1...Bxb7+
        • 2.axb7#
      • 1...Qxh3
        • 2.Qc7#
      • 1...Qxg8
        • 2.Qb8#
      • 1...Bxg8
        • 2.Rb8#
      • 1...Sxg8
        • 2.Bxd7#
      • 1...Qg4
        • 2.Qc7#
      • 1...Be6
        • 2.Rc7#
      • 1...Sg4
        • 2.Rxd8#
      • 1...Se8
        • 2.Bxd7#
      • 1...b5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,OGATE,XR(G)::P(F),XB(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(f);XQ(C)::B(A)+R(D),DCHECK
      • Refutation
        • Q(b);CHECK,XQ(C)
  • Actual
    • R(D);P_PINB(h),P_PINS(f)
    • Threat
      • S(B),XP(d)
    • Vars
      • B(c);CHECK,OGATE,XR(G)::P(F),XB(c)
      • Q(b);N_GUARD,N_SPINS(f),XB(A)::QAR1(C)
      • Q(b);N_GUARD,N_SPINB(h),XR(D)::QAR1(C)
      • B(c);N_PINR(G),N_SPINB(h),XR(D)::R1(G)
      • S(e);N_GUARD,N_SPINB(h),XR(D)::B(A),XS(f)
      • Q(b);N_GUARD,N_SPINS(f)::QAR1(C)
      • B(c);N_PINR(G),N_SPINS(f)::R1(G)
      • S(e);N_SPINS(f)::R1(D),XB(h)
      • S(e);N_GUARD,N_SPINB(h)::B(A),XS(f)
      • P(d);::S(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).