MESON Chess Problem Database

Problem Display
PID: 171328 (n7/8/2Q5/3B2B1/6k1/7N/8/4K3 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1994

n7/8/2Q5/3B2B1/6k1/7N/8/4K3

#2

5 + 2

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qe6#
    • 1...Kh5
      • 2.Bf3#
  • Tries
    • 1.Sf2+?
      • 1...Kg3
        • 2.Qd6#
      • 1...Kf5
        • 2.Qf6#
      • 1...Kh5
        • 2.Qh6#
      • 1...Kxg5!
    • 1.Bg2?
      • threat
        • 2.Qf3#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Bf3#
      • 1...Kg3!
    • 1.Be6+?
      • 1...Kh5
        • 2.Qe8#
      • 1...Kg3!
    • 1.Qa4+?
      • 1...Kxh3
        • 2.Qh4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Bf7#
      • 1...Kg3!
    • 1.Qd7+?
      • 1...Kh5
        • 2.Bf7#
      • 1...Kg3!
    • 1.Qc4+?
      • 1...Kxh3
        • 2.Qh4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Bf7#
      • 1...Kg3!
    • 1.Qe6+?
      • 1...Kh5
        • 2.Bf3#
      • 1...Kg3!
    • 1.Qc8+?
      • 1...Kh5
        • 2.Bf7#
      • 1...Kg3!
  • Keys
    • 1.Bh1!
      • threat
        • 2.Qf3#
      • 1...Kg3
        • 2.Qg2#
      • 1...Kxh3
        • 2.Qg2#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Bf3#

Anticipated by 15317(1982)

This anticipates 178234(2007)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(E)
    • K(a);S_FLIGHT::B(C)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB(E)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • B(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(B)::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(B)::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT,XS(B)::QAB1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::B(C)
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).