MESON Chess Problem Database

Problem Display
PID: 156462 (3b1Q2/1n1N2p1/NpPpknp1/1P4B1/7K/3RP3/8/1B6 w - - 0 1)

Macina, Pasquale

Best Problems, 2006

3b1Q2/1n1N2p1/NpPpknp1/1P4B1/7K/3RP3/8/1B6

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Rxd6#
    • 1...Sa5
      • 2.Rxd6#
    • 1...Sc5
      • 2.Rxd6#
  • Tries
    • 1.Sc7+?
      • 1...Kf5
        • 2.Rd1#
        • 2.Rd2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd4#
        • 2.Rd5#
        • 2.Rxd6#
      • 1...Bxc7!
    • 1.Qf7+?
      • 1...Kf5
        • 2.Rd1#
        • 2.Rd2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd4#
        • 2.Rd5#
        • 2.Rxd6#
      • 1...Kxf7!
  • Keys
    • 1.Rd5!
      • 1...Kxd5
        • 2.Qf7#
      • 1...Sxd5
        • 2.Qg8#
      • 1...Sxd7
        • 2.Qg8#
      • 1...Se4
        • 2.Qg8#
      • 1...Bc7
        • 2.Sxc7#
      • 1...Be7
        • 2.Sc7#
      • 1...Sg4
        • 2.Qg8#
      • 1...Sh5
        • 2.Qg8#
      • 1...Sh7
        • 2.Qg8#
      • 1...Se8
        • 2.Qg8#
      • 1...Sg8
        • 2.Qxg8#
      • 1...Sa5
        • 2.Rxd6#
      • 1...Sc5
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • K(c);P_SPINS(d),S_FLIGHT::B(A)+R(B),XP(b)
    • S(f);N_GUARD::R1(B),XP(b)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • B(h);XS(G)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(J)
  • Actual
    • R(B);
    • Vars
      • K(c);S_FLIGHT,XR(B)::QAB(J)
      • S(d);N_GUARD,P_PINB(F),SBLOCK,XR(B)::QAB(J)
      • S(d);N_GUARD,P_PINB(F),XS(I)::QAB(J)
      • S(d);N_GUARD,P_PINB(F)::QAB(J)
      • B(h);N_GUARD::S(G),XB(h)
      • B(h);N_GUARD::S(G)
      • S(d);N_GUARD,P_PINB(F)::QAB(J),XS(d)
      • S(f);N_GUARD::R1(B),XP(b)
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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).