MESON Chess Problem Database

Problem Display
PID: 161534 (8/B2B2Rb/K4Qpq/4PN1p/5k1P/p4p2/5N2/2b5 w - - 0 1)

Antonov, Yuri Mikhailovich

Pat a Mat, 1985

8/B2B2Rb/K4Qpq/4PN1p/5k1P/p4p2/5N2/2b5

#2

9 + 8

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Be3#
    • 1...Be3
      • 2.Bxe3#
  • Tries
    • 1.Bb8?
      • threat
        • 2.e6#
      • 1...gxf5
        • 2.Qxh6#
      • 1...Bb2!
    • 1.Qc6?
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Sd3#
        • 2.Bb8#
        • 2.Qd6#
      • 1...gxf5
        • 2.Sd3#
      • 1...g5!
    • 1.Qd6?
      • threat
        • 2.Qd4#
      • 1...gxf5
        • 2.e6#
      • 1...Bb2
        • 2.Be3#
      • 1...Be3
        • 2.Bxe3#
      • 1...g5!
  • Keys
    • 1.e6!
      • threat
        • 2.Bb8#
      • 1...gxf5
        • 2.Qd4#
      • 1...Bb2
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::B(G)
    • B(a);N_GUARD::B(G),XB(a)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(G)+P(C)
      • Vars
        • P(f);OGATE,P_PINQ(F),P_SPINP(f),XS(D)::QAB(F),XQ(g)
      • Refutation
        • B(a);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(f);P_PINQ(F),XS(D)::S(A)
      • Refutation
        • P(f);P_PINQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • P(f);P_PINQ(F),SBLOCK,XS(D)::QAB(F)+P(C)
        • B(a);N_GUARD::B(G)
        • B(a);N_GUARD::B(G),XB(a)
      • Refutation
        • P(f);P_PINQ(F)
  • Actual
    • P(C);
    • Threat
      • B(G)
    • Vars
      • P(f);P_SPINP(f),SBLOCK,XS(D)::QAR2(F)
      • B(a);N_GUARD::B(G)
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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).