MESON Chess Problem Database

Problem Display
PID: 26947 (4q3/1n6/2RN1Qp1/2p1N1p1/3k1Bp1/6K1/3P4/3n1b1B w - - 0 1)

Dombrovskis, Alfreds A

Loshinski, Lev Ilich

1st Prize, Magyar Sakkelet, 1971

4q3/1n6/2RN1Qp1/2p1N1p1/3k1Bp1/6K1/3P4/3n1b1B

#2

8 + 9

2988 Izbrannie Kompozitsi 1985

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Sb5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Sb2
      • 2.Be3#
    • 1...Sf2
      • 2.Be3#
    • 1...Sc3
      • 2.Be3#
    • 1...Se3
      • 2.Bxe3#
    • 1...Sxd6
      • 2.Rxd6#
      • 2.Qxd6#
    • 1...c4
      • 2.Sb5#
    • 1...gxf4+
      • 2.Qxf4#
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qe4#
      • 1...gxf4+
        • 2.Qxf4#
      • 1...Qxc6
        • 2.Sxc6#
      • 1...Qxe5
        • 2.Bxe5#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...gxf5
        • 2.Sxf5#
      • 1...Bg2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sf2
        • 2.Be3#
      • 1...Sc3
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::S(G)
    • B(b);N_GUARD::S(G),XB(b)
    • S(a);N_GUARD::B(D)
    • S(a);N_GUARD::B(D),XS(a)
    • P(e);S_CUTB(b)::S(G)
    • P(f);CHECK,OGATE,XB(D)::QAR2(H),XP(f)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • P(f);CHECK,OGATE,XB(D)::QAR2(H),XP(f)
      • Q(i);XR(F)::S(E),XQ(i)
      • Q(i);OGATE,P_PINB(D),XS(E)::B(D),XQ(i)
      • S(h);OGATE,XS(G)::R(F),XS(h)
      • P(g);XQ(H)::S(G),XP(g)
      • B(b);N_GUARD::QAR1(H)
      • B(b);N_GUARD::QAR1(H),XB(b)
      • S(a);N_GUARD::B(D)
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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).