MESON Chess Problem Database

Problem Display
PID: 11371 (2bQ4/K3p1r1/p1P3P1/r6p/2R1NB1k/4N3/7P/4bB1n w - - 0 1)

Visscher, G

Chess, 1938

2bQ4/K3p1r1/p1P3P1/r6p/2R1NB1k/4N3/7P/4bB1n

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bg5#
    • 1...Ra2
      • 2.Bg5#
    • 1...Ra3
      • 2.Bg5#
    • 1...Ra4
      • 2.Bg5#
    • 1...Rg5
      • 2.Bxg5#
    • 1...Bf5
      • 2.Bg5#
    • 1...Sf2
      • 2.Bg3#
  • Tries
    • 1.Qxe7+?
      • 1...Rg5
        • 2.Bxg5#
      • 1...Rxe7+!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sf3#
      • 1...e5+
        • 2.Sf7#
      • 1...e6+
        • 2.Bc7#
      • 1...Rxg5
        • 2.Bg3#
      • 1...Bg4
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(d);N_GUARD::B(F)
    • R(d);N_GUARD,N_SPINP(g)::B(F),XR(d)
    • B(i);S_CUTR(d)::B(F)
    • S(b);N_GUARD,S_CUTB(a)::B(F)
  • Tries
    • Try
      • Q(J);CHECK,P_SPINQ(J),XP(g)
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::B(F),XR(d)
      • Refutation
        • R(h);CHECK,XQ(J)
  • Actual
    • S(E);N_PINP(g)
    • Threat
      • S(E)
    • Vars
      • P(g);CHECK::QAB(J)+S(E)
      • P(g);CHECK,S_CUTB(i)::R(D)+B(F)
      • R(d);SBLOCK,XS(E)::R(D)+B(F),DCHECK
      • B(i);SBLOCK::S(C)
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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).