MESON Chess Problem Database

Problem Display
PID: 205799 (8/B2p2Q1/3Pr3/KN1k4/5p1R/1r3P2/B1n1P3/n1RN4 w - - 0 1)

Cancelliere, Giuseppe

L'Alfiere di Re, 1925

8/B2p2Q1/3Pr3/KN1k4/5p1R/1r3P2/B1n1P3/n1RN4

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd4#
    • 1...Se1
      • 2.Rc5#
      • 2.Qd4#
    • 1...Sa3
      • 2.Rc5#
      • 2.Qd4#
    • 1...Se3
      • 2.Rc5#
      • 2.Qd4#
    • 1...Sb4
      • 2.Rc5#
      • 2.Qd4#
    • 1...Sd4
      • 2.Rc5#
      • 2.Qxd4#
  • Tries
    • 1.Qd4+?
      • 1...Sxd4
        • 2.Rc5#
      • 1...Kc6!
    • 1.Qf7?
      • 1...Kc4
        • 2.Se3#
      • 1...Ke5
        • 2.Rh5#
      • 1...Se1
        • 2.Rc5#
        • 2.Rh5#
      • 1...Sa3
        • 2.Rc5#
        • 2.Rh5#
      • 1...Se3
        • 2.Rc5#
      • 1...Sb4
        • 2.Rc5#
        • 2.Rh5#
      • 1...Sd4
        • 2.Rc5#
      • 1...Kc6!
  • Keys
    • 1.Qg8!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke5
        • 2.Qg5#
      • 1...Kc6
        • 2.Qa8#
      • 1...Se1
        • 2.Rc5#
        • 2.Rh5#
      • 1...Sa3
        • 2.Rc5#
        • 2.Rh5#
      • 1...Se3
        • 2.Rc5#
      • 1...Sb4
        • 2.Rc5#
        • 2.Rh5#
      • 1...Sd4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(d),P_SPINS(b),S_FLIGHT::QAR1(K)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • S(b);OGATE,XQ(K)::R1(A)
      • Refutation
        • K(e);N_SPINR(c),P_SPINS(b),S_FLIGHT
    • Try
      • Q(K);
      • Vars
        • K(e);P_SPINP(d),P_SPINS(b),S_FLIGHT::S(B)
        • K(e);N_SPINR(c),P-FLIGHT::R(F)
        • S(b);OGATE::R1(A)
      • Refutation
        • K(e);N_SPINR(c),P_SPINS(b),S_FLIGHT
  • Actual
    • Q(K);
    • Vars
      • K(e);P_SPINP(d),P_SPINS(b),S_FLIGHT::S(B)
      • K(e);N_SPINR(c),P-FLIGHT::QAR2(K)
      • K(e);N_SPINR(c),P_SPINS(b),S_FLIGHT::QAB(K)
      • S(b);OGATE::R1(A)
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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).