MESON Chess Problem Database

Problem Display
PID: 40149 (N1nRn2B/1R3Q2/4r1r1/1P6/BPk1P1N1/2P5/K2b1p2/3b1q2 w - - 0 1)

Hirschenson, Aaron

2nd HM., Israel Ring Ty., 2001

N1nRn2B/1R3Q2/4r1r1/1P6/BPk1P1N1/2P5/K2b1p2/3b1q2

#2

12 + 9

721 Variantim 2001
721 Variantim 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Qxe6#
    • 1...Rg8
      • 2.Qxe6#
    • 1...Be2
      • 2.Bb3#
    • 1...Bb3+
      • 2.Bxb3#
    • 1...Bf3
      • 2.Bb3#
    • 1...Bxg4
      • 2.Bb3#
    • 1...Be1
      • 2.Se3#
    • 1...Be3
      • 2.Sxe3#
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sa7
      • 2.Sb6#
    • 1...Se7
      • 2.Sb6#
    • 1...Sf6
      • 2.Rc7#
    • 1...Sc7
      • 2.Rxc7#
    • 1...Sg7
      • 2.Rc7#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rd4#
      • 1...Bb3+
        • 2.Bxb3#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Bxf3
        • 2.Bb3#
      • 1...Bxc3
        • 2.Qxc3#
      • 1...Qd3
        • 2.Qxd3#
      • 1...Rd6
        • 2.Se5#
      • 1...Be3
        • 2.Sxe3#
      • 1...Scd6
        • 2.Sb6#
      • 1...Sed6
        • 2.Rc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 11
  • Sets
    • R(g);N_GUARD,XS(F)::QAB(I),XR(f)
    • R(g);N_GUARD::QAB(I),XR(f)
    • B(a);N_GUARD::B(C)
    • B(a);CHECK,N_GUARD::B(C),XB(a)
    • B(a);N_GUARD,XS(F)::B(C)
    • B(c);N_GUARD::S(F)
    • B(c);N_GUARD::S(F),XB(c)
    • S(h);N_GUARD::S(J),XS(h)
    • S(h);N_GUARD::S(J)
    • S(i);N_GUARD::R(H)
    • S(i);N_GUARD::R(H),XS(i)
  • Actual
    • Q(I);N_PINR(f)
    • Threat
      • R1(K)
    • Vars
      • B(a);CHECK,N_GUARD::B(C),XB(a)
      • R(f);OGATE,XP(E)::QAR2(I),XR(f)
      • B(a);N_GUARD,XQ(I)::B(C)
      • B(c);OGATE,XP(B)::QAR1(I),XB(c)
      • Q(b);N_GUARD::QAB1(I),XQ(b)
      • R(f);N_GUARD::S(F)
      • B(c);N_GUARD::S(F),XB(c)
      • S(h);N_GUARD,S_CUTR(f)::S(J)
      • S(i);N_GUARD,S_CUTR(f)::R(H)
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).