MESON Chess Problem Database

Problem Display
PID: 267039 (6R1/2P1P3/1P2BK2/2pN4/R1b2P2/Q1NkpP2/1q1pp3/B1b3n1 w - - 0 1)

Castellari, Umberto

L'Italia Scacchistica, 1931

6R1/2P1P3/1P2BK2/2pN4/R1b2P2/Q1NkpP2/1q1pp3/B1b3n1

#2

13 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sb5#
    • 1...Qxc3+
      • 2.Qxc3#
    • 1...Ba2
      • 2.Bf5#
    • 1...Bb3
      • 2.Bf5#
    • 1...Bb5
      • 2.Bf5#
    • 1...Ba6
      • 2.Bf5#
  • Keys
    • 1.Rd8!
      • threat
        • 2.Sb4#
      • 1...Qxc3+
        • 2.Qxc3#
      • 1...Kc2
        • 2.Sxe3#
      • 1...Kd4
        • 2.Sb5#
      • 1...Bxd5
        • 2.Bf5#
      • 1...Qb4
        • 2.Sxb4#
      • 1...Bb3
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(f);N_PINS(C),P-FLIGHT,P_SPINB(h)::S(C)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::QAR1(B),XQ(c)
    • B(h);::B(I)
  • Actual
    • R(M);
    • Threat
      • R(M)+S(G),DCHECK
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::QAR1(B),XQ(c)
      • K(f);N_GUARD,S_CUTB(h),S_FLIGHT::S(G),XP(g)
      • K(f);N_PINS(C),P-FLIGHT,P_SPINB(h)::S(C)
      • B(h);P_SPINB(h),XS(G)::B(I)
      • Q(c);N_PINS(C)::R(M)+S(G),DCHECK,XQ(c)
      • B(h);::B(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).