MESON Chess Problem Database

Problem Display
PID: 61913 (1B5q/1P6/Kp2PpPp/p2R3N/2r1k3/Qpr1N2R/4B2p/6bb w - - 0 1)

Einat, Paz

Grinblat, Arieh

Comm., Eretria 5 Days Ty., 2005

1B5q/1P6/Kp2PpPp/p2R3N/2r1k3/Qpr1N2R/4B2p/6bb

#2

11 + 12

5673 Eretria Bulletin 2005
721 Variantim 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qh7
      • 2.Sxf6#
    • 1...Qc8
      • 2.Sxf6#
    • 1...Qe8
      • 2.Sxf6#
    • 1...Qg8
      • 2.Sxf6#
    • 1...Rc1
      • 2.Bd3#
    • 1...Rc2
      • 2.Bd3#
    • 1...Rd3
      • 2.Bxd3#
  • Tries
    • 1.Re5+?
      • 1...Kd4
        • 2.Sf5#
      • 1...fxe5!
    • 1.Qc1?
      • threat
        • 2.Sg3#
        • 2.Rh4#
      • 1...Rxc1
        • 2.Bd3#
      • 1...Rxe3
        • 2.Qxc4#
      • 1...Bxe3
        • 2.Qxh1#
      • 1...Rc7
        • 2.Rh4#
      • 1...Bf2
        • 2.Qxh1#
      • 1...Bf3
        • 2.Sg3#
        • 2.Bxf3#
      • 1...f5
        • 2.Sg3#
      • 1...Qxb8!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qf4#
      • 1...Qxb8
        • 2.Sxf6#
      • 1...Rxe3
        • 2.Rh4#
      • 1...Bxe3
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(l);N_GUARD::S(F),XP(j)
    • Q(l);N_GUARD,P_PINP(J)::S(F),XP(j)
    • R(e);N_GUARD::B(A)
    • R(e);N_GUARD::B(A),XR(e)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(g);P-FLIGHT::S(C)
      • Refutation
        • P(j);XR(E)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);N_GUARD,XQ(B)::B(A)
        • R(e);OGATE,XS(C)::QAR2(B),XR(f)
        • B(a);OGATE,XS(C)::QAB(B),XB(b)
        • R(f);::R(D)
        • B(a);OGATE::QAB(B),XB(b)
        • P(j);::S(F)
      • Refutation
        • Q(l);XB(K)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • Q(l);N_GUARD,XB(K)::S(F),XP(j)
      • R(e);SBLOCK,XS(C)::R(D)
      • B(a);SBLOCK,XS(C)::S(F)
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).