MESON Chess Problem Database

Problem Display
PID: 271286 (1nQbR2K/1N5p/1p3p2/p2n2p1/r2k3q/r3pBp1/1N6/4B3 w - - 0 1)

Peccinini, C

Die Schwalbe, 1932

1nQbR2K/1N5p/1p3p2/p2n2p1/r2k3q/r3pBp1/1N6/4B3

#2

7 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Re4#
    • 1...Qh2
      • 2.Re4#
    • 1...Qh3
      • 2.Re4#
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qh5
      • 2.Re4#
    • 1...Qh6
      • 2.Re4#
    • 1...Rc4
      • 2.Qxc4#
    • 1...Sb4
      • 2.Qc4#
    • 1...g4
      • 2.Re4#
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qxd5#
      • 1...Qe4
        • 2.Rxe4#
      • 1...Sxd7!
    • 1.Qxd8?
      • threat
        • 2.Qxd5#
      • 1...Qe4
        • 2.Rxe4#
      • 1...Sd7!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxd5#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Sc3
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qc4#
      • 1...Sf4
        • 2.Qe4#
      • 1...Sc7
        • 2.Qxb6#
      • 1...Se7
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(f);N_GUARD::R1(F)
    • Q(f);N_GUARD::R1(F),XQ(f)
    • R(d);N_GUARD::QAR1(E),XR(d)
    • S(h);S_CUTR(d)::QAR1(E)
    • P(i);S_CUTQ(f)::R1(F)
    • P(j);N_GUARD::QAB1(E)
  • Tries
    • Try
      • Q(E);P_PINS(h)
      • Threat
        • QAR1(E),XS(h)
      • Vars
        • Q(f);N_GUARD::R1(F),XQ(f)
      • Refutation
        • S(m);N_SPINS(h),XQ(E)
    • Try
      • Q(E);P_PINS(h),XB(n)
      • Threat
        • QAR1(E),XS(h)
      • Vars
        • Q(f);N_GUARD::R1(F),XQ(f)
      • Refutation
        • S(m);N_SPINS(h)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XS(h)
    • Vars
      • Q(f);N_GUARD::QAR1(E),XQ(f)
      • S(h);N_GUARD,S_CUTR(a)::QAB1(E),XP(b)
      • S(h);OGATE::QAR1(E)
      • S(h);S_CUTQ(f)::QAR1(E)
      • S(h);N_GUARD,S_CUTB(n)::QAB(E),XP(j)
      • S(h);N_GUARD,S_CUTB(n)::QAB(E),XP(k)
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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).