MESON Chess Problem Database

Problem Display
PID: 243557 (1Q2N3/2p1N3/r5B1/r4q1R/4kn2/2Pp1pRp/2P2K1B/5b2 w - - 0 1)

Castellari, Umberto

Parallele 50, 1951

1Q2N3/2p1N3/r5B1/r4q1R/4kn2/2Pp1pRp/2P2K1B/5b2

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg6
      • 2.Qb4#
    • 1...Re5
      • 2.Qb4#
    • 1...c5
      • 2.Bxf5#
    • 1...c6
      • 2.Sf6#
  • Keys
    • 1.Rxf3!
      • threat
        • 2.Re3#
      • 1...Ke5
        • 2.Re3#
      • 1...Sxh5
        • 2.Qb4#
      • 1...Sxg6
        • 2.Qb4#
      • 1...Se2
        • 2.cxd3#
      • 1...Sg2
        • 2.Qb4#
      • 1...Sd5
        • 2.Bxf5#
      • 1...Se6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_SPINQ(h),XB(G)::QAR(I)
    • R(g);SBLOCK::QAR(I)
    • P(j);S_CUTR(g)::B(G),XQ(h)
    • P(j);S_CUTR(i)::S(J)
  • Actual
    • R(E);XP(c)
    • Threat
      • R1(E)
    • Vars
      • K(e);P-FLIGHT,P_SPINP(j),P_SPINS(f)::R(E)
      • S(f);P_PINR(E),XR(F)::QAR(I)
      • S(f);N_SPINQ(h),P_PINR(E),XB(G)::QAR(I)
      • S(f);N_GUARD,P_PINR(E),S_CUTB(a)::P(A),XP(b)
      • S(f);P_PINR(E)::QAR(I)
      • S(f);P_PINR(E),S_CUTR(g)::B(G),XQ(h)
      • S(f);P_PINR(E),S_CUTR(i)::S(J)
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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).