MESON Chess Problem Database

Problem Display
PID: 173976 (nQ6/4p1p1/3Np2r/1Bk1bp2/qpP2N2/1r1pP2p/1p5K/6B1 w - - 0 1)

Bottacchi, Antonio

Il Resto del Carlino, 1923

nQ6/4p1p1/3Np2r/1Bk1bp2/qpP2N2/1r1pP2p/1p5K/6B1

#2

8 + 14

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Sxd3#
    • 1...Bd4
      • 2.exd4#
    • 1...Bxf4+
      • 2.exf4#
    • 1...Bxd6
      • 2.e4#
    • 1...Bf6
      • 2.Sxe6#
    • 1...Sb6
      • 2.Sb7#
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
  • Tries
    • 1.Qa7+?
      • 1...Kxd6
        • 2.c5#
      • 1...Sb6
        • 2.Sb7#
        • 2.Qc7#
      • 1...Qxa7!
    • 1.Qb6+?
      • 1...Sxb6
        • 2.Sb7#
      • 1...Kxb6!
    • 1.Qc8+?
      • 1...Kxd6
        • 2.Qc6#
        • 2.c5#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Kb6!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Qxe5#
      • 1...Bxf4+
        • 2.exf4#
      • 1...Qxb5
        • 2.Qxb5#
      • 1...Bxb8
        • 2.e4#
      • 1...Bc3
        • 2.Sxd3#
      • 1...Bd4
        • 2.exd4#
      • 1...Bd6
        • 2.e4#
      • 1...Bf6
        • 2.Sxe6#
      • 1...Bc7
        • 2.e4#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(h);N_PINS(E)::S(E),XP(c)
    • B(h);N_PINS(E),OGATE::P(C),XB(h)
    • B(h);CHECK,OGATE,XS(E)::B(A)+P(C),XB(h)
    • B(h);N_GUARD,XS(G)::B(A)+P(C)
    • B(h);N_PINS(E)::S(E),XP(j)
    • S(n);N_GUARD::QAR2(H),XS(n)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);OGATE,S_FLIGHT,XS(G)::P(D)
      • Refutation
        • Q(e);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • S(n);SBLOCK,XQ(H)::S(G)
      • Refutation
        • K(g);S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • S(n);N_GUARD,P_SPINS(n)::QAR2(H),XS(n)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • QAR2(H),XB(h)
    • Vars
      • B(h);CHECK,OGATE,XS(E)::B(A)+P(C),XB(h)
      • Q(e);OGATE,XB(F)::QAR1(H),XQ(e)
      • B(h);N_GUARD,XQ(H)::B(A)+P(C)
      • B(h);N_PINS(E)::S(E),XP(c)
      • B(h);N_PINS(E),OGATE::P(C),XB(h)
      • B(h);N_GUARD::B(A)+P(C)
      • B(h);N_PINS(E)::S(E),XP(j)
      • S(n);N_GUARD::QAB1(H),XS(n)
      • S(n);N_GUARD::QAB1(H)
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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).