MESON Chess Problem Database

Problem Display
PID: 110029 (2Br4/3nn2b/4Q2B/2pNpr2/2P1N1k1/3K1RPp/4P3/6R1 w - - 0 1)

Castellari, Umberto

Il Littorale, 1929-1931

2Br4/3nn2b/4Q2B/2pNpr2/2P1N1k1/3K1RPp/4P3/6R1

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sb8
      • 2.Sf6#
    • 1...Sf8
      • 2.Sf6#
    • 1...Sg6
      • 2.Qxf5#
  • Tries
    • 1.Rf4+?
      • 1...Kh5
        • 2.Rh4#
      • 1...exf4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qh4#
      • 1...Rxf3+
        • 2.Qxf3#
      • 1...Kh5
        • 2.g4#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Rf4
        • 2.Qg5#
      • 1...Rg5
        • 2.Qxg5#
      • 1...Rh5
        • 2.Se3#
      • 1...Sg6
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD,P_PINS(H)::S(G)
    • S(f);N_GUARD,P_PINS(H)::S(G),XS(f)
    • S(g);N_GUARD,S_CUTB(h)::QAB1(I),XR(e)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(b);N_SPINR(e),OGATE,S_FLIGHT::R1(D)
      • Refutation
        • P(d);XR(D)
  • Actual
    • Q(I);N_PINR(e)
    • Threat
      • QAR1(I)
    • Vars
      • R(e);CHECK,OGATE,P_PINS(G),P_SPINS(f),XR(D)::QAB1(I),XR(e)
      • K(b);OGATE,S_FLIGHT::P(E)
      • R(e);P_PINS(G),P_SPINS(f),XQ(I)::S(H),XR(e)
      • S(f);P_PINS(H),P_SPINR(e),XQ(I)::S(G),XS(f)
      • R(e);N_GUARD,P_PINS(G),P_SPINS(f)::QAR1(I)
      • R(e);N_GUARD,P_PINS(G),P_SPINS(f)::QAR1(I),XR(e)
      • R(e);P_PINS(G),P_SPINS(f),SBLOCK::S(H)
      • S(g);N_GUARD,S_CUTB(h)::QAB1(I),XR(e)
HTML5 logo

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).