MESON Chess Problem Database

Problem Display
PID: 172407 (1RB5/kb6/8/8/8/K5Q1/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

1RB5/kb6/8/8/8/K5Q1/8/8

#2

4 + 2

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb7+?
      • 1...Ka8
        • 2.Qb8#
      • 1...Ka6!
    • 1.Qd6?
      • 1...Bxc8
        • 2.Qb6#
      • 1...Bh1
        • 2.Qb6#
      • 1...Bg2
        • 2.Qb6#
      • 1...Bf3
        • 2.Qb6#
      • 1...Be4
        • 2.Qb6#
      • 1...Bd5
        • 2.Qb6#
      • 1...Ba6
        • 2.Qb6#
      • 1...Ba8
        • 2.Qb6#
      • 1...Bc6!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxb7#
      • 1...Ka6
        • 2.Ra8#
      • 1...Kxb8
        • 2.Qxb7#
      • 1...Bxc8
        • 2.Qb6#
      • 1...Bh1
        • 2.Qb6#
      • 1...Bg2
        • 2.Qb6#
      • 1...Bf3
        • 2.Qb6#
      • 1...Be4
        • 2.Qb6#
      • 1...Bd5
        • 2.Qb6#
      • 1...Ba6
        • 2.Qb6#
      • 1...Bc6
        • 2.Qb6#
      • 1...Ba8
        • 2.Qb6#

Anticipated by 80027(1985)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK,XB(b)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • B(b);XB(D)::QAB1(B)
        • B(b);::QAB1(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XB(b)
    • Vars
      • K(a);P-FLIGHT,P_SPINB(b)::R(C)
      • K(a);P_SPINB(b),S_FLIGHT,XR(C)::QAR1(B),XB(b)
      • B(b);XB(D)::QAB1(B)
      • B(b);::QAB1(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).