MESON Chess Problem Database

Problem Display
PID: 262014 (1K1B4/3pR2q/3k1p1p/1Pp1N3/8/4p1P1/B6Q/7n w - - 0 1)

Brogi, Giuseppe

To Mat, 1959

1K1B4/3pR2q/3k1p1p/1Pp1N3/8/4p1P1/B6Q/7n

#2

8 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sf7#
    • 1...Qc2
      • 2.Sf7#
    • 1...Qd3
      • 2.Sf7#
    • 1...Qe4
      • 2.Sf7#
    • 1...Qf5
      • 2.Sf7#
    • 1...Qxe7
      • 2.Bc7#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qh8
      • 2.Sf7#
  • Tries
    • 1.Qd2+?
      • 1...Qd3
        • 2.Sf7#
        • 2.Qxd3#
      • 1...exd2!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Sc4#
      • 1...Qxe7
        • 2.Bc7#
      • 1...fxe5
        • 2.Qxe5#
      • 1...c4
        • 2.Sxc4#
      • 1...Qg8
        • 2.Rxd7#
      • 1...Qc2
        • 2.Sf7#
        • 2.Rxd7#
      • 1...Qd3
        • 2.Sf7#
        • 2.Rxd7#
      • 1...Qe4
        • 2.Sf7#
        • 2.Rxd7#
      • 1...Qf5
        • 2.Sf7#
      • 1...Qf7
        • 2.Sxf7#
      • 1...f5
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(h);N_GUARD,P_PINP(D)::S(E)
    • Q(h);N_GUARD::S(E)
    • Q(h);SBLOCK,XR(F)::B(H)
    • Q(h);N_GUARD::S(E),XQ(h)
    • Q(h);N_GUARD,P_PINB(H)::S(E)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • P(b);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • S(E)
    • Vars
      • Q(h);SBLOCK,XR(F)::B(H)
      • P(e);OGATE,XS(E)::QAB1(B),XP(e)
      • P(c);::S(E),XP(c)
      • Q(h);N_GUARD,P_PINB(H)::R1(F),XP(g)
      • Q(h);N_GUARD::S(E)
      • Q(h);N_GUARD::S(E),XQ(h)
      • P(e);S_CUTQ(h)::QAR(B)
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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).