MESON Chess Problem Database

Problem Display
PID: 17578 (8/2p1qrN1/8/Kpp2b1Q/1N1knP2/4b3/BPR1R3/3r4 w - - 0 1)

Hassberg, Eric Manfred

3rd Prize, Suomen Shakki, 1947

8/2p1qrN1/8/Kpp2b1Q/1N1knP2/4b3/BPR1R3/3r4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sc6#
    • 1...Bh3
      • 2.Qd5#
    • 1...Bg4
      • 2.Qd5#
    • 1...Be6
      • 2.Qe5#
    • 1...Bg6
      • 2.Qd5#
    • 1...Bd7
      • 2.Qd5#
    • 1...Bh7
      • 2.Qd5#
    • 1...Bc8
      • 2.Qd5#
  • Tries
    • 1.Se6+?
      • 1...Bxe6
        • 2.Qe5#
      • 1...Qxe6!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxe3#
      • 1...Bxf4
        • 2.Sc6#
      • 1...Rd3
        • 2.Sc6#
      • 1...Bc1
        • 2.Sc6#
      • 1...Bg1
        • 2.Sc6#
      • 1...Bd2
        • 2.Qd3#
      • 1...Bf2
        • 2.Sc6#
      • 1...Sd2
        • 2.Qd5#
      • 1...Sf2
        • 2.Qd5#
      • 1...Sc3
        • 2.bxc3#
      • 1...Sg3
        • 2.Qd5#
      • 1...Sg5
        • 2.Qd5#
      • 1...Sd6
        • 2.Qd5#
      • 1...Sf6
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 7
  • Sets
    • R(a);SBLOCK::S(E)
    • B(g);OGATE::QAR1(H)
    • B(g);OGATE::QAB1(H)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • B(g);OGATE,XS(I)::QAB1(H)
      • Refutation
        • Q(i);XS(I)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XB(b)
    • Vars
      • B(b);XP(F)::S(E)
      • R(a);SBLOCK::S(E)
      • B(b);::S(E)
      • B(b);OGATE,P_PINS(E)::QAR1(H)
      • S(d);OGATE::QAR1(H)
      • S(d);OGATE::P(B),XS(d)
      • S(d);S_CUTR(j)::S(I),XB(g)
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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).