MESON Chess Problem Database

Problem Display
PID: 85330 (1B6/8/8/5b2/8/4K3/6kp/Q3R3 w - - 0 1)

Zheltonozhko, Vladimir Ivanovich

Smena, 1995

1B6/8/8/5b2/8/4K3/6kp/Q3R3

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Re2#
      • 2.Qb2#
      • 2.Qa2#
      • 2.Qa8#
  • Tries
    • 1.Qg7+?
      • 1...Kh3
        • 2.Qg3#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Bg6!
    • 1.Qh8?
      • threat
        • 2.Qxh2#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1S
        • 2.Qxh1#
        • 2.Qh2#
      • 1...h1B
        • 2.Qxh1#
        • 2.Qh2#
      • 1...h1R
        • 2.Qxh1#
      • 1...Bh3
        • 2.Qb2#
      • 1...Bh7!
    • 1.Qd1?
      • threat
        • 2.Qf3#
      • 1...Be4
        • 2.Qg4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Kh3!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxh2#
        • 2.Qg3#
      • 1...Kh3
        • 2.Qg3#
      • 1...h1Q
        • 2.Qg3#
      • 1...h1S
        • 2.Qh2#
      • 1...h1B
        • 2.Qh2#
        • 2.Qg3#
      • 1...h1R
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • B(c);N_GUARD,P_SPINB(c)::QAR2(A),XB(c)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • P(b);OGATE::QAB1(A),XQ(b)
        • P(b);OGATE::QAB1(A),XR(b)
        • B(c);N_GUARD,SBLOCK::QAR(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(c);N_GUARD::QAR2(A)
        • B(c);N_GUARD::QAR2(A),XB(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • P(b);::QAR1(A)
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).