MESON Chess Problem Database

Problem Display
PID: 246003 (8/8/8/1p2p3/2kB4/3R1Q1K/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Sem Shakhmatnikh not, 2017

8/8/8/1p2p3/2kB4/3R1Q1K/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bg1?
      • threat
        • 2.Qe4#
      • 1...b4
        • 2.Qd5#
      • 1...e4
        • 2.Qxe4#
      • 1...Kb4!
    • 1.Bf2?
      • threat
        • 2.Qe4#
      • 1...b4
        • 2.Qd5#
      • 1...e4
        • 2.Qxe4#
      • 1...Kb4!
    • 1.Ba7?
      • threat
        • 2.Qe4#
      • 1...b4
        • 2.Qd5#
      • 1...e4
        • 2.Rd4#
        • 2.Qxe4#
      • 1...Kb4!
    • 1.Rc3+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kb4!
    • 1.Qe4?
      • threat
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bb6#
        • 2.Ba7#
      • 1...Kb4
        • 2.Bb6#
      • 1...exd4
        • 2.Qxd4#
      • 1...b4!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Qe4#
      • 1...Kb4
        • 2.Qe4#
      • 1...b4
        • 2.Qd5#
      • 1...e4
        • 2.Rd4#
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR2(B)
      • Vars
        • P(b);SBLOCK::QAB1(B)
        • P(c);::QAR2(B),XP(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Threat
        • QAR2(B)
      • Vars
        • P(b);SBLOCK::QAB1(B)
        • P(c);::QAR2(B),XP(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Threat
        • QAR2(B)
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(5)
      • Vars
        • K(a);P-FLIGHT::QAR(B)+B(D)
        • P(c);OGATE,P_SPINP(c),XB(D)::QAR1(B),XP(c)
      • Refutation
        • P(b);
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT::QAR(B)
      • P(b);SBLOCK::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).