MESON Chess Problem Database

Problem Display
PID: 65659 (B4Q2/bn6/Rq2r3/1Rp1k3/4PNpP/2P3B1/6K1/8 w - - 0 1)

Capraez, Friedrich

Schweizerische Schachzeitung, 1857

B4Q2/bn6/Rq2r3/1Rp1k3/4PNpP/2P3B1/6K1/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Rxe6#
      • 2.Qf5#
    • 1...Qc7
      • 2.Rxe6#
      • 2.Qf5#
    • 1...Qd8
      • 2.Rxe6#
      • 2.Qf5#
    • 1...Qxb5
      • 2.Rxe6#
      • 2.Qf5#
    • 1...Qd6
      • 2.Qf5#
    • 1...Rd6
      • 2.Qf5#
    • 1...Sa5
      • 2.Se2#
      • 2.Sd3#
      • 2.Sh3#
      • 2.Sh5#
      • 2.Sg6#
    • 1...Sd6
      • 2.Se2#
      • 2.Sd3#
      • 2.Sh3#
      • 2.Sh5#
      • 2.Sg6#
    • 1...Sd8
      • 2.Se2#
      • 2.Sd3#
      • 2.Sh3#
      • 2.Sh5#
      • 2.Sg6#
  • Tries
    • 1.Rxc5+?
      • 1...Qxc5
        • 2.Rxe6#
        • 2.Qf5#
      • 1...Sxc5
        • 2.Se2#
        • 2.Sd3#
        • 2.Sh3#
        • 2.Sh5#
        • 2.Sg6#
      • 1...Kxe4!
  • Keys
    • 1.Qxc5+!
      • 1...Kxe4
        • 2.Ra4#
      • 1...Kf6
        • 2.Qf8#
      • 1...Qxc5
        • 2.Rxe6#
      • 1...Sxc5
        • 2.Sh5#

There are these versions: 68541

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(d);::QAR1(J)
    • R(e);SBLOCK::QAR1(J)
  • Tries
    • Try
      • R(G);CHECK,XP(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(g),XP(D)
  • Actual
    • Q(J);CHECK,XP(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(g),XP(D)::R(H)
      • K(c);S_FLIGHT::QAR2(J)
      • Q(d);OGATE,P_SPINQ(d),XQ(J)::R1(H),XR(e)
      • S(g);P_SPINS(g),XQ(J)::B(C)+S(E)
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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).