MESON Chess Problem Database

Problem Display
PID: 173648 (KB6/1BR1NP2/4b2q/N5nR/p2k4/2n3P1/4PP2/b4Q2 w - - 0 1)

Boros, Sandor

2nd Prize, The Problemist, 1934

KB6/1BR1NP2/4b2q/N5nR/p2k4/2n3P1/4PP2/b4Q2

#2

12 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rc4#
    • 1...Bc4
      • 2.Rxc4#
    • 1...Bg4
      • 2.Rc4#
    • 1...Bf5
      • 2.Rc4#
    • 1...Bd7
      • 2.Rc4#
    • 1...Bc8
      • 2.Rc4#
    • 1...Sd5
      • 2.Rc4#
    • 1...Sf3
      • 2.Ba7#
    • 1...Sh3
      • 2.Ba7#
    • 1...Se4
      • 2.Sec6#
    • 1...Sxf7
      • 2.Ba7#
    • 1...Sh7
      • 2.Ba7#
  • Tries
    • 1.Sf5+?
      • 1...Bxf5
        • 2.Rc4#
      • 1...Ke5!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qe3#
      • 1...Ke5
        • 2.Qf4#
      • 1...Sxf7
        • 2.Ba7#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sd1
        • 2.Qc5#
      • 1...Sce4
        • 2.Sac6#
      • 1...Sf3
        • 2.Ba7#
      • 1...Sh3
        • 2.Ba7#
      • 1...Sge4
        • 2.Sec6#
      • 1...Sh7
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(f);N_GUARD::R1(H)
    • B(f);N_GUARD::R1(H),XB(f)
    • S(b);S_CUTB(f)::R1(H)
    • S(e);::B(L)
    • S(e);SBLOCK::S(I)
    • S(e);XP(J)::B(L)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • B(f);XS(I)::R1(H)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);P_SPINS(e),S_FLIGHT::QAB1(A)
      • S(e);XP(J)::B(L)
      • S(b);S_CUTB(f)::R1(H)
      • S(b);OGATE::QAB1(A)
      • S(b);SBLOCK::S(E)
      • S(e);::B(L)
      • S(e);SBLOCK::S(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).