MESON Chess Problem Database

Problem Display
PID: 166886 (6Q1/2r5/2p5/1pR2p2/3kPN2/P6p/3N1P1B/K7 w - - 0 1)

Valle, Giovanni Batista

Nuova Rivista degli Scacchi, 1875

6Q1/2r5/2p5/1pR2p2/3kPN2/P6p/3N1P1B/K7

#2

9 + 6

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qc4#
    • 1...fxe4
      • 2.Sb3#
  • Tries
    • 1.Rc4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...bxc4!
    • 1.Qb3?
      • threat
        • 2.Se6#
        • 2.Qc3#
        • 2.Qe3#
        • 2.Qb4#
      • 1...Re7
        • 2.Qc3#
        • 2.Qe3#
        • 2.Qb4#
      • 1...b4
        • 2.Se6#
        • 2.Qc4#
        • 2.Qe3#
        • 2.Qxb4#
      • 1...Kxc5!
    • 1.Qe6?
      • threat
        • 2.Sb3#
        • 2.Qe5#
        • 2.Qd6#
      • 1...Rd7
        • 2.Sb3#
        • 2.Qe5#
      • 1...Re7
        • 2.Sb3#
        • 2.Qd6#
      • 1...Kxc5!
    • 1.Qg3?
      • threat
        • 2.Se6#
        • 2.Qc3#
        • 2.Qe3#
      • 1...Re7
        • 2.Qc3#
        • 2.Qe3#
      • 1...b4
        • 2.Se6#
        • 2.Qe3#
      • 1...Kxc5!
  • Keys
    • 1.Qb8!
      • 1...Kxc5
        • 2.Se6#
      • 1...fxe4
        • 2.Sb3#
      • 1...Ra7
        • 2.Qe5#
        • 2.Qd6#
      • 1...Rb7
        • 2.Qe5#
        • 2.Qd6#
      • 1...Rd7
        • 2.Qe5#
      • 1...Re7
        • 2.Qd6#
      • 1...Rf7
        • 2.Qe5#
        • 2.Qd6#
      • 1...Rg7
        • 2.Qe5#
        • 2.Qd6#
      • 1...Rh7
        • 2.Qe5#
        • 2.Qd6#
      • 1...Rc8
        • 2.Qe5#
        • 2.Qd6#
      • 1...b4
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAR1(I)
    • P(d);SBLOCK,XP(F)::S(B)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
      • Refutation
        • P(c);XR(H)
    • Try
      • Q(I);
      • Threat
        • DUALS(4)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
  • Actual
    • Q(I);
    • Vars
      • K(b);S_FLIGHT,XR(H)::S(G)
      • P(d);SBLOCK,XP(F)::S(B)
      • R(f);OGATE::QAB1(I)
      • R(f);OGATE::QAR2(I)
      • P(c);OGATE::QAR2(I),XP(c)
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).