MESON Chess Problem Database

Problem Display
PID: 145304 (6B1/2pnp3/rN2N2K/p1p1kpR1/3p4/2B1qPp1/3Q4/4R1b1 w - - 0 1)

Guidelli, Giorgio

Good Companions, 1922

6B1/2pnp3/rN2N2K/p1p1kpR1/3p4/2B1qPp1/3Q4/4R1b1

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sxd7#
    • 1...dxc3
      • 2.Sxd7#
    • 1...c4
      • 2.Qxd4#
  • Tries
    • 1.Bxd4+?
      • 1...cxd4
        • 2.Qxd4#
      • 1...Kd6!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Se6#
      • 1...Kf4
        • 2.Rxf5#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Sxd7#
      • 1...Qxe1
        • 2.Sc6#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Qe2
        • 2.Sc6#
      • 1...Qe4
        • 2.Sc6#
      • 1...e6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • K(g);N_SPINQ(b),S_FLIGHT::S(F),XS(k)
    • P(d);N_SPINP(d),P_SPINP(h),XB(C)::S(F),XS(k)
    • P(f);N_GUARD::QAB1(B),XP(d)
  • Tries
    • Try
      • B(C);CHECK,P_PINP(h),XP(d)
      • Vars
        • P(f);OGATE,XB(C)::QAB1(B),XP(f)
      • Refutation
        • K(g);N_SPINP(h),N_SPINQ(b),S_FLIGHT
  • Actual
    • S(G);P_PINP(h),P_SPINS(F),XP(d)
    • Threat
      • B(C)+S(G)
    • Vars
      • K(g);N_PINR(E),N_SPINP(h),S_FLIGHT::R1(E),XP(h)
      • K(g);N_PINS(F),N_SPINP(h),N_SPINQ(b),S_FLIGHT::S(F)
      • K(g);N_PINS(F),N_SPINP(h),N_SPINQ(b),S_FLIGHT::S(F),XS(k)
      • Q(b);N_PINR(E),N_SPINQ(b),XR(A)::B(C)+S(G),DCHECK
      • P(f);N_SPINP(h),OGATE,P_SPINP(f),XS(G)::QAB1(B),XP(f)
      • Q(b);N_PINR(E)::B(C)+S(G),DCHECK
      • P(l);N_PINS(F)::B(C)+S(G),XP(l)
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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).