MESON Chess Problem Database

Problem Display
PID: 17276 (B1n1R3/4p3/1pp3K1/3P2pR/2PpkB1p/1Np1P1p1/8/3Q3N w - - 0 1)

Stocchi, Ottavio

L'Italia Scacchistica, 1929

B1n1R3/4p3/1pp3K1/3P2pR/2PpkB1p/1Np1P1p1/8/3Q3N

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Rxe7#
    • 1...Sa7
      • 2.Rxe7#
    • 1...g2
      • 2.Sf2#
    • 1...h3
      • 2.Sxg3#
    • 1...g4
      • 2.Re5#
    • 1...b5
      • 2.Sc5#
    • 1...cxd5
      • 2.Bxd5#
    • 1...c5
      • 2.d6#
    • 1...e5
      • 2.Rxe5#
    • 1...e6
      • 2.Rxe6#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Qc2#
      • 1...c2
        • 2.Qxc2#
      • 1...gxf4!
    • 1.Rxg5?
      • threat
        • 2.Re5#
      • 1...e5
        • 2.Rgxe5#
        • 2.Rexe5#
      • 1...dxe3!
    • 1.Qc2+?
      • 1...d3
        • 2.Qg2#
      • 1...Kf3!
  • Keys
    • 1.Qe2!
      • 1...dxe3
        • 2.Qxe3#
      • 1...gxf4
        • 2.exd4#
      • 1...cxd5
        • 2.Bxd5#
      • 1...Sd6
        • 2.Rxe7#
      • 1...Sa7
        • 2.Rxe7#
      • 1...c2
        • 2.Sd2#
      • 1...g2
        • 2.Sf2#
      • 1...d3
        • 2.Qg2#
      • 1...h3
        • 2.Sxg3#
      • 1...g4
        • 2.Re5#
      • 1...b5
        • 2.Sc5#
      • 1...c5
        • 2.d6#
      • 1...e5
        • 2.Rxe5#
      • 1...e6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(j);N_GUARD::R(K),XP(i)
    • P(b);N_GUARD::S(B)
    • P(e);N_GUARD::S(B),XP(b)
    • P(f);OGATE::R1(H)
    • P(g);N_GUARD::S(C)
    • P(h);N_SPINP(i),OGATE,P_SPINP(h),XP(G)::B(J),XP(h)
    • P(h);::B(J)+P(G)
    • P(i);OGATE::R1(K),XP(i)
    • P(i);OGATE::R(K),XP(i)
  • Tries
    • Try
      • S(C);XP(c)
      • Threat
        • QAB(A)
      • Vars
        • P(a);::QAB(A),XP(a)
      • Refutation
        • P(f);XB(F)
    • Try
      • R(H);XP(f)
      • Threat
        • R1(H)
      • Refutation
        • P(c);XP(D)
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);N_SPINP(i),P_SPINP(c),SBLOCK::QAB(A)
      • Refutation
        • K(d);N_SPINP(i),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • P(c);N_SPINP(i),OGATE,P_SPINP(c),XP(D)::QAR1(A),XP(c)
      • P(f);SBLOCK,XB(F)::QAR(A)+P(D),XP(c)
      • P(h);N_SPINP(i),OGATE,P_SPINP(h),XP(G)::B(J),XP(h)
      • S(j);N_GUARD::R(K),XP(i)
      • P(a);N_GUARD::S(C)
      • P(b);N_GUARD::S(B)
      • P(c);SBLOCK::QAB(A)
      • P(e);N_GUARD::S(B),XP(b)
      • P(f);OGATE::R1(H)
      • P(g);N_GUARD::S(C)
      • P(h);::B(J)+P(G)
      • P(i);OGATE::R1(K),XP(i)
      • P(i);OGATE::R(K),XP(i)
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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).