MESON Chess Problem Database

Problem Display
PID: 198170 (1B3N1K/1pn2R1p/6p1/qRbnk1p1/1p2p1P1/8/2BQ4/8 w - - 0 1)

Guidelli, Giorgio

L'Italia Scacchistica, 1920

1B3N1K/1pn2R1p/6p1/qRbnk1p1/1p2p1P1/8/2BQ4/8

#2

8 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qxd5#
    • 1...Bf2
      • 2.Qxd5#
    • 1...Be3
      • 2.Qxd5#
    • 1...Bd4
      • 2.Qh2#
    • 1...Bb6
      • 2.Qxd5#
    • 1...Ba7
      • 2.Qxd5#
    • 1...Be7
      • 2.Qxd5#
    • 1...Bxf8
      • 2.Qxd5#
    • 1...Sb6
      • 2.Bxc7#
    • 1...Sf6
      • 2.Re7#
  • Tries
    • 1.Rxc5?
      • threat
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#
      • 1...Qa2
        • 2.Bxc7#
      • 1...Qxc5!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#
      • 1...Bd4
        • 2.Qh2#
      • 1...Bd6
        • 2.Qb2#
      • 1...Sc3
        • 2.Sd7#
      • 1...Se3
        • 2.Sd7#
      • 1...Sf4
        • 2.Sd7#
      • 1...Sb6
        • 2.Bxc7#
      • 1...Sf6
        • 2.Re7#
      • 1...Se7
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • B(d);N_SPINS(j),P_SPINS(e)::QAR1(B),XS(e)
    • B(d);N_SPINS(j),P_SPINS(e),SBLOCK::QAB(B)
    • B(d);N_SPINS(j),P_SPINS(e),XS(G)::QAR1(B),XS(e)
    • S(e);N_GUARD,P_SPINB(d),S_CUTQ(c)::B(F),XS(j)
    • S(e);N_GUARD,P_SPINB(d),SBLOCK::R(E)
  • Tries
    • Try
      • R(D);N_PINS(j),P_PINS(e),XB(d)
      • Threat
        • QAR1(B),XS(e)
      • Vars
        • K(f);S_FLIGHT::QAR1(B),XS(e)
        • Q(c);N_GUARD::B(F),XS(j)
      • Refutation
        • Q(c);N_SPINS(e),P_SPINS(j),XR(D)
  • Actual
    • B(A);
    • Threat
      • QAR1(B),XS(e)
    • Vars
      • K(f);N_SPINS(j),P_SPINS(e),S_FLIGHT::QAR1(B),XS(e)
      • B(d);N_SPINS(j),P_SPINS(e),SBLOCK::QAB(B)
      • B(d);N_GUARD,N_SPINS(j),P_SPINS(e),SBLOCK::QAB(B)
      • S(e);P_SPINB(d)::S(G)
      • S(e);N_GUARD,P_SPINB(d),S_CUTQ(c)::B(F),XS(j)
      • S(e);N_GUARD,P_SPINB(d),SBLOCK::R(E)
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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).