MESON Chess Problem Database

Problem Display
PID: 51418 (1B6/3Q1p2/b2Prp1r/1p2k1P1/1b3N1n/2N1Pp2/8/1B1K4 w - - 0 1)

Amirov, Talip Khasanovich

The Guardian, 1959

1B6/3Q1p2/b2Prp1r/1p2k1P1/1b3N1n/2N1Pp2/8/1B1K4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6+
      • 2.Sd3#
    • 1...Re7
      • 2.Sd3#
      • 2.Qxe7#
    • 1...Re8
      • 2.Sd3#
      • 2.Qxe8#
    • 1...Sf5
      • 2.Sd3#
    • 1...f5
      • 2.Sd3#
  • Tries
    • 1.Qxb5+?
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bxb5!
    • 1.Qxf7?
      • threat
        • 2.Qxe6#
      • 1...Rxd6+
        • 2.Qd5#
      • 1...fxg5
        • 2.Sd3#
      • 1...Re7
        • 2.Qd5#
        • 2.Qxe7#
      • 1...Re8
        • 2.Qd5#
        • 2.Qxe8#
      • 1...f5
        • 2.Sd3#
      • 1...Bc8!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qd4#
      • 1...Bxc3
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sf5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);CHECK,P_SPINR(g),XP(G)::S(E)
    • S(c);SBLOCK::S(E)
    • P(h);SBLOCK::S(E)
  • Tries
    • Try
      • Q(H);CHECK,XP(d)
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(H),XB(b)
      • Refutation
        • B(f);XQ(H)
    • Try
      • Q(H);XP(j)
      • Threat
        • QAR1(H),XR(g)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XP(G)::QAR1(H)
        • P(h);XP(F)::S(E)
        • P(h);::S(E)
      • Refutation
        • B(f);
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • B(b);N_GUARD,XS(C)::QAR2(H)
      • B(b);N_GUARD::QAR2(H),XB(b)
      • S(c);SBLOCK::S(E)
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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).