MESON Chess Problem Database

Problem Display
PID: 232148 (6r1/1p2P2Q/1Kpprk1B/R3p2b/2N3pP/8/3R1N2/6b1 w - - 0 1)

Borovkov, AS

Zadachi i Etyudi, 2001

6r1/1p2P2Q/1Kpprk1B/R3p2b/2N3pP/8/3R1N2/6b1

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Bxg5#
      • 2.hxg5#
    • 1...Ra8
      • 2.Bg5#
    • 1...Rb8
      • 2.Bg5#
    • 1...Rc8
      • 2.Bg5#
    • 1...Rd8
      • 2.Bg5#
    • 1...Re8
      • 2.Bg5#
    • 1...Rf8
      • 2.Bg5#
    • 1...Rh8
      • 2.Bg5#
    • 1...Bxf2+
      • 2.Rxf2#
    • 1...Bh2
      • 2.Se4#
    • 1...e4
      • 2.Rf5#
    • 1...c5
      • 2.Se4#
  • Tries
    • 1.Qg7+?
      • 1...Kf5
        • 2.Se3#
      • 1...Rxg7!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Se4#
      • 1...Bxf2+
        • 2.Rxf2#
      • 1...Rxd6
        • 2.Rxd6#
      • 1...Rxe7
        • 2.Qf5#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Rg6
        • 2.Qf7#
      • 1...Bg6
        • 2.Bg5#
      • 1...e4
        • 2.Rf5#
      • 1...c5
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::B(G)
    • B(a);CHECK,OGATE,XS(B)::R(A),XB(a)
    • B(a);N_PINS(B)::S(B)
    • P(c);OGATE::R1(E)
    • P(e);N_PINS(B)::S(B)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINP(c)::S(C)
      • Refutation
        • R(j);XQ(I)
  • Actual
    • S(C);XP(f)
    • Threat
      • S(C)
    • Vars
      • B(a);CHECK,OGATE,XS(B)::R(A),XB(a)
      • R(g);OGATE,XS(C)::R(A),XR(g)
      • R(g);SBLOCK,XP(H)::QAR1(I)
      • R(j);N_GUARD::QAB1(I),XR(j)
      • B(d);N_GUARD::QAR1(I),XB(d)
      • R(j);S_CUTB(d)::QAR1(I)
      • B(d);S_CUTR(j)::B(G)
      • P(c);OGATE::R1(E)
      • P(e);N_PINS(B),P_PINS(C)::S(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).