MESON Chess Problem Database

Problem Display
PID: 160019 (5R2/B4BN1/r6q/4pN1P/4PkpP/2p3p1/6P1/1bK1Qn2 w - - 0 1)

Amirov, Talip Khasanovich

Die Schwalbe, 1970

5R2/B4BN1/r6q/4pN1P/4PkpP/2p3p1/6P1/1bK1Qn2

#2

11 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh5
      • 2.Sxh5#
    • 1...Sd2
      • 2.Qe3#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
  • Tries
    • 1.Be3+?
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Kxe4!
    • 1.Bd5?
      • threat
        • 2.Qxf1#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Qb6
        • 2.Sd6#
      • 1...Ra2
        • 2.Sxh6#
      • 1...Sd2
        • 2.Be3#
        • 2.Qxg3#
        • 2.Qe3#
      • 1...Sh2
        • 2.Be3#
        • 2.Qxg3#
        • 2.Qe3#
      • 1...Se3
        • 2.Bxe3#
        • 2.Qxg3#
        • 2.Qxe3#
      • 1...Bd3!
  • Keys
    • 1.Sxg3!
      • threat
        • 2.Qf2#
      • 1...Bxe4
        • 2.Se2#
      • 1...Sxg3
        • 2.Qe3#
      • 1...Qb6
        • 2.Be6#
      • 1...Ra2
        • 2.Bg6#
      • 1...Sd2
        • 2.Be3#
        • 2.Qe3#
      • 1...Sh2
        • 2.Be3#
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(i);XP(G)::S(J),XQ(i)
    • S(b);N_GUARD::QAB1(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • S(b);OGATE,XB(H)::QAB1(B),XS(b)
      • Refutation
        • K(e);P-FLIGHT,P_PINB(H),XP(D)
    • Try
      • B(I);
      • Threat
        • QAR(B),XS(b)
      • Vars
        • B(a);OGATE,XP(D)::QAR1(B),XB(a)
        • Q(i);N_GUARD::R(K)+S(F)
        • R(h);N_GUARD::R(K)+S(F),XQ(i)
      • Refutation
        • B(a);
  • Actual
    • S(F);XP(d)
    • Threat
      • QAR2(B)
    • Vars
      • B(a);SBLOCK,XP(D)::S(F)
      • S(b);N_GUARD,XS(F)::QAB1(B)
      • Q(i);N_GUARD::R(K)+B(I)
      • R(h);N_GUARD::R(K)+B(I)
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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).