MESON Chess Problem Database

Problem Display
PID: 206040 (b5K1/3Q1N2/rp3bpB/4p3/3Nk3/1pP5/4P3/8 w - - 0 1)

Shanshin, Valery Yurevich

Tehtavaniekka, 2018

b5K1/3Q1N2/rp3bpB/4p3/3Nk3/1pP5/4P3/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qg4#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bb7
      • 2.Qxb7#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...exd4
        • 2.Qf3#
      • 1...Bg5
        • 2.Qf3#
      • 1...g5
        • 2.Qf3#
      • 1...Ra1
        • 2.Qg2#
        • 2.Qf3#
      • 1...Kd5!
    • 1.Qb5?
      • threat
        • 2.Sd6#
      • 1...Bg5
        • 2.Qxe5#
      • 1...Be7
        • 2.Qxe5#
      • 1...Bd5
        • 2.Qd3#
      • 1...g5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qd3#
      • 1...Kf5
        • 2.Sc5#
      • 1...Bd5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(h);P_PINS(F),SBLOCK::QAR2(E)
    • B(h);N_GUARD::QAB(E),XB(h)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);XS(C)::QAB1(E)
        • B(f);::QAB1(E)
        • P(g);::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • S(F)
      • Vars
        • B(f);N_GUARD::QAR1(E),XP(c)
        • B(h);P_PINS(F),SBLOCK::QAB1(E)
      • Refutation
        • P(g);
  • Actual
    • S(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT::QAB(E)+S(C)
      • B(h);SBLOCK::S(F)
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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).