MESON Chess Problem Database

Problem Display
PID: 246317 (8/5K2/8/3pk1N1/1Q6/4N3/8/7b w - - 0 1)

Bantysh, Nikolai Ivanovich

Shakhmatnaya Poeziya, 2009

8/5K2/8/3pk1N1/1Q6/4N3/8/7b

#2

4 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Sxf3#
    • 1...d4
      • 2.Qb8#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Sf7#
      • 1...d4
        • 2.Qd6#
        • 2.Qb8#
      • 1...Be4!
    • 1.Sg2?
      • threat
        • 2.Qf4#
      • 1...Kf5
        • 2.Qf4#
      • 1...d4
        • 2.Qc5#
      • 1...Bxg2!
    • 1.Sh3?
      • threat
        • 2.Qf4#
      • 1...d4
        • 2.Qe7#
      • 1...Be4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qf4#
      • 1...d4
        • 2.Qxd4#
      • 1...Be4
        • 2.Qb8#

Anticipated by 243672(2008)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(C),XB(a)
    • P(b);SBLOCK::QAB(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • S(C)
      • Refutation
        • B(a);
    • Try
      • S(A);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • P(b);OGATEB::QAR2(B)
      • Refutation
        • B(a);XS(A)
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • B(a);
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • P(b);::QAB1(B),XP(b)
      • B(a);SBLOCK::QAB(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).