MESON Chess Problem Database

Problem Display
PID: 102444 (1q3bB1/1P3n2/2P5/R2P1QPK/1B1k2N1/N3p2p/n3P3/3r4 w - - 0 1)

Prete, Rodolfo

L'Echiquier de France, 1957

1q3bB1/1P3n2/2P5/R2P1QPK/1B1k2N1/N3p2p/n3P3/3r4

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Qxf4#
    • 1...Qa7
      • 2.Qf4#
    • 1...Qxb7
      • 2.Qf4#
    • 1...Qa8
      • 2.Qf4#
    • 1...Qc8
      • 2.Qf4#
    • 1...Qd8
      • 2.Qf4#
    • 1...Ra1
      • 2.Qd3#
    • 1...Rb1
      • 2.Qd3#
    • 1...Rc1
      • 2.Qd3#
    • 1...Re1
      • 2.Qd3#
    • 1...Rf1
      • 2.Qd3#
    • 1...Rg1
      • 2.Qd3#
    • 1...Rh1
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Se5
      • 2.Qf4#
    • 1...Sd6
      • 2.Qe5#
  • Tries
    • 1.Bc5+?
      • 1...Kc3
        • 2.Qc2#
      • 1...Bxc5!
    • 1.Rc5?
      • threat
        • 2.Sc2#
        • 2.Sb5#
        • 2.Rc4#
      • 1...Qxb7
        • 2.Sc2#
        • 2.Rc4#
        • 2.Qf4#
      • 1...Sxb4
        • 2.Rc4#
      • 1...Qe5
        • 2.Sc2#
        • 2.Sb5#
      • 1...Rc1
        • 2.Sb5#
        • 2.Qd3#
      • 1...Rd2
        • 2.Sb5#
        • 2.Rc4#
      • 1...Sc3
        • 2.Sc2#
        • 2.Rc4#
      • 1...Se5
        • 2.Sc2#
        • 2.Sb5#
        • 2.Qf4#
      • 1...Sd6
        • 2.Sc2#
        • 2.Qe5#
      • 1...Bxc5!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Bh7#
      • 1...Se5
        • 2.Qf4#
      • 1...Qe5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qc4#
      • 1...Rc1
        • 2.Qd3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Se5
        • 2.Sb5#
      • 1...Sd6
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(g);N_GUARD::QAR2(G),XQ(g)
    • Q(g);N_GUARD::QAR2(G)
    • Q(g);N_GUARD,XP(K)::QAR2(G)
    • R(a);N_GUARD::QAR1(G)
    • R(a);N_GUARD::QAR1(G),XR(a)
    • S(f);S_CUTQ(g)::QAR2(G)
    • S(f);N_GUARD,S_CUTQ(g)::QAB1(G)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(G)
      • Refutation
        • B(h);XB(C)
    • Try
      • R(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);XB(C)::R1(E)
      • Refutation
        • B(h);XR(E)
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);P-FLIGHT::B(L)
        • S(f);P_SPINS(f),S_CUTQ(g)::QAR2(G)
      • Refutation
        • Q(g);P_PINP(H),P_SPINQ(g)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • R(a);N_GUARD::QAR1(G)
      • S(b);N_GUARD::B(C),XS(b)
      • S(f);::S(B)
      • S(f);S_CUTB(h)::B(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).