MESON Chess Problem Database

Problem Display
PID: 99921 (3NQ1b1/2p5/2pppK2/n5p1/N2k4/1P3Bp1/2P1pP2/2brqn2 w - - 0 1)

Pituk, Alexander

Bata-80 JT, 1988

3NQ1b1/2p5/2pppK2/n5p1/N2k4/1P3Bp1/2P1pP2/2brqn2

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Sxe6#
    • 1...Sc4
      • 2.Sxc6#
    • 1...Sb7
      • 2.Sxc6#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Qe4#
      • 1...Bh7
        • 2.Sxe6#
      • 1...Sd2
        • 2.Qd3#
        • 2.c3#
      • 1...d5!
    • 1.Qxe6?
      • threat
        • 2.Qe4#
      • 1...Bxe6
        • 2.Sxe6#
      • 1...Sd2
        • 2.Qe3#
      • 1...d5
        • 2.Qe5#
      • 1...Bh7!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qe4#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Bh7
        • 2.Sxe6#
      • 1...Sd2
        • 2.Qc3#
      • 1...d5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(n);N_GUARD::S(G),XP(l)
    • S(h);N_GUARD::S(G),XP(j)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • B(n);N_GUARD::S(G),XP(l)
      • Refutation
        • P(k);
    • Try
      • Q(H);XP(l)
      • Threat
        • QAR1(H)
      • Vars
        • B(n);XQ(H)::S(G),XB(n)
        • S(d);N_GUARD,S_CUTB(a)::QAB1(H)
        • P(k);N_GUARD::QAB1(H)
      • Refutation
        • B(n);
  • Actual
    • Q(H);XP(j)
    • Threat
      • QAR1(H)
    • Vars
      • S(h);XQ(H)::S(G),XS(h)
      • B(n);N_GUARD::S(G),XP(l)
      • S(d);S_CUTQ(c)::QAB1(H)
      • P(k);N_GUARD::QAB1(H)
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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).