MESON Chess Problem Database

Problem Display
PID: 218806 (B7/qN6/8/7K/8/6Q1/7P/6Bk w - - 0 1)

Spiess, Jean-Yves

Deutsche Schachzeitung, 1972

B7/qN6/8/7K/8/6Q1/7P/6Bk

#2

6 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5+
      • 2.Sxc5#
    • 1...Qa1
      • 2.Sa5#
    • 1...Qa5+
      • 2.Sxa5#
    • 1...Qxb7
      • 2.Bxb7#
  • Tries
    • 1.Sa5+?
      • 1...Qb7
        • 2.Bxb7#
      • 1...Qxa8!
    • 1.Sc5+?
      • 1...Qb7
        • 2.Bxb7#
      • 1...Qxa8!
    • 1.Sd6+?
      • 1...Qb7
        • 2.Bxb7#
      • 1...Qxa8!
    • 1.Sd8+?
      • 1...Qb7
        • 2.Bxb7#
      • 1...Qxa8!
    • 1.Bf2?
      • threat
        • 2.Qg1#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qa5+
        • 2.Sxa5#
      • 1...Qa1
        • 2.Sa5#
      • 1...Qxf2!
    • 1.Be3?
      • threat
        • 2.Qg1#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qa5+
        • 2.Sxa5#
      • 1...Qa1
        • 2.Sa5#
      • 1...Qxe3!
    • 1.Bd4?
      • threat
        • 2.Qg1#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qa5+
        • 2.Sxa5#
      • 1...Qa1
        • 2.Sa5#
      • 1...Qxd4!
    • 1.Bb6?
      • threat
        • 2.Qg1#
      • 1...Qa5+
        • 2.Sxa5#
      • 1...Qa1
        • 2.Sa5#
      • 1...Qxb6!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qg1#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Qa1
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(b);CHECK,N_GUARD::B(F)+S(E),XQ(b)
    • Q(b);N_GUARD,SBLOCK::B(F)+S(E)
    • Q(b);OGATE,P_SPINQ(b),XS(E)::B(F),XQ(b)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(F),XQ(b)
      • Refutation
        • Q(b);XB(F)
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(F),XQ(b)
      • Refutation
        • Q(b);XB(F)
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(F),XQ(b)
      • Refutation
        • Q(b);XB(F)
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(F),XQ(b)
      • Refutation
        • Q(b);XB(F)
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);CHECK,N_GUARD::B(F)+S(E),XQ(b)
        • Q(b);N_GUARD,SBLOCK::B(F)+S(E)
      • Refutation
        • Q(b);XB(A)
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);CHECK,N_GUARD::B(F)+S(E),XQ(b)
        • Q(b);N_GUARD,SBLOCK::B(F)+S(E)
      • Refutation
        • Q(b);XB(A)
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);CHECK,N_GUARD::B(F)+S(E),XQ(b)
        • Q(b);N_GUARD::B(F)+S(E)
      • Refutation
        • Q(b);XB(A)
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);CHECK,N_GUARD::B(F)+S(E),XQ(b)
        • Q(b);N_GUARD,SBLOCK::B(F)+S(E)
      • Refutation
        • Q(b);XB(A)
  • Actual
    • B(A);
    • Threat
      • QAR1(C)
    • Vars
      • Q(b);CHECK,XB(A)::B(F)+S(E),XQ(b)
      • Q(b);N_GUARD,SBLOCK::B(F)+S(E)
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).