MESON Chess Problem Database

Problem Display
PID: 152569 (2r1nR2/rR1p1p2/p1N1k3/2P1b2N/2P3P1/4KP2/1p5B/4Q3 w - - 0 1)

Battiston, Alan Doris

L'Italia Scacchistica, 1985

2r1nR2/rR1p1p2/p1N1k3/2P1b2N/2P3P1/4KP2/1p5B/4Q3

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Rxe8#
    • 1...Rc7
      • 2.Rxe8#
    • 1...Bd4+
      • 2.Kxd4#
    • 1...Bf4+
      • 2.Kxf4#
    • 1...Bf6
      • 2.Sf4#
    • 1...Sf6
      • 2.Sg7#
    • 1...f5
      • 2.gxf5#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qxe5#
      • 1...d6
        • 2.Sd4#
      • 1...f6
        • 2.Sf4#
      • 1...b1S+!
    • 1.Sd4+?
      • 1...Bxd4+
        • 2.Kxd4#
      • 1...Ke7!
    • 1.Bxe5?
      • threat
        • 2.Sf4#
      • 1...Rxc6
        • 2.Rxe8#
      • 1...dxc6!
    • 1.Qh4?
      • threat
        • 2.Qe7#
      • 1...Bd4+
        • 2.Sxd4#
      • 1...Bf4+
        • 2.Sxf4#
      • 1...Rxc6
        • 2.Rxe8#
      • 1...Bd6
        • 2.Sd4#
      • 1...Bf6
        • 2.Sf4#
      • 1...Sf6
        • 2.Sg7#
      • 1...f6!
  • Keys
    • 1.Kf2!
      • threat
        • 2.Qxe5#
      • 1...d6
        • 2.Sd4#
      • 1...f6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD,XS(I)::R(K),XS(i)
    • R(h);N_GUARD::R(K),XS(i)
    • B(b);CHECK::QAR(A)+K(C),XB(b)
    • B(b);N_GUARD,SBLOCK::S(H)
    • S(i);N_GUARD,SBLOCK,S_CUTB(b)::S(H)
    • P(g);OGATE::P(F),XP(g)
  • Tries
    • Try
      • K(C);P_PINB(b),S_FLIGHT
      • Threat
        • QAR1(A),XB(b)
      • Vars
        • P(f);::S(I)
        • P(g);::S(H)
      • Refutation
        • P(a);CHECK
    • Try
      • S(I);CHECK
      • Vars
        • B(b);CHECK,XS(I)::QAR(A)+K(C),XB(b)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(f)
    • Try
      • B(B);XB(b)
      • Threat
        • S(H)
      • Vars
        • R(h);N_GUARD,XS(I)::R(K),XS(i)
      • Refutation
        • P(f);XS(I)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(b);CHECK,N_GUARD::S(I),XB(b)
        • B(b);CHECK,N_GUARD::S(H),XB(b)
        • R(h);N_GUARD,XS(I)::R(K),XS(i)
        • B(b);N_GUARD::S(I)
        • B(b);N_GUARD::S(H)
        • S(i);N_GUARD,S_CUTB(b)::S(H)
      • Refutation
        • P(g);
  • Actual
    • K(C);P_PINB(b),S_FLIGHT
    • Threat
      • QAR1(A),XB(b)
    • Vars
      • P(f);::S(I)
      • P(g);::S(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).