MESON Chess Problem Database

Problem Display
PID: 45607 (7K/6N1/4P2N/5p1p/3n2bk/3R4/5r1P/b1B1QBq1 w - - 0 1)

Monteiro da Silveira, Jose Luis

Recomm., BCF 054. Ty., 1946-1947

7K/6N1/4P2N/5p1p/3n2bk/3R4/5r1P/b1B1QBq1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Qxf2#
    • 1...Qg3
      • 2.hxg3#
    • 1...Bd1
      • 2.Rh3#
    • 1...Be2
      • 2.Rh3#
    • 1...Bh3
      • 2.Rxh3#
  • Tries
    • 1.Qxf2+?
      • 1...Qg3
        • 2.Qxg3#
        • 2.hxg3#
      • 1...Qxf2!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qe7#
      • 1...Sxe6
        • 2.Rh3#
      • 1...Bd1
        • 2.Rh3#
      • 1...Be2
        • 2.Rh3#
      • 1...Bf3
        • 2.Sgxf5#
      • 1...Bh3
        • 2.Rxh3#
      • 1...Sc2
        • 2.Rh3#
      • 1...Se2
        • 2.Rh3#
      • 1...Sb3
        • 2.Rh3#
      • 1...Sf3
        • 2.Sxf5#
      • 1...Sb5
        • 2.Rh3#
      • 1...Sc6
        • 2.Rh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::QAB(B),XR(c)
    • Q(b);N_SPINR(c),OGATE::P(D),XQ(b)
    • B(e);N_GUARD::R1(E)
    • B(e);N_GUARD::R1(E),XB(e)
  • Tries
    • Try
      • Q(B);CHECK,XR(c)
      • Refutation
        • Q(b);XQ(B)
  • Actual
    • Q(B);N_PINR(c)
    • Threat
      • QAB(B)
    • Vars
      • S(d);P_PINS(H),P_SPINB(e),XP(F)::R1(E)
      • B(e);N_GUARD,P_SPINS(d)::R1(E)
      • B(e);N_GUARD,P_SPINS(d),S_CUTR(c)::S(H),XP(g)
      • B(e);N_GUARD,P_SPINS(d)::R1(E),XB(e)
      • S(d);P_PINS(H),P_SPINB(e)::R1(E)
      • S(d);N_GUARD,P_PINS(H),P_SPINB(e),S_CUTR(c)::S(G),XP(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).