MESON Chess Problem Database

Problem Display
PID: 136387 (1n6/bQ6/p7/p3Pp2/r2k3K/1P1NpP2/2nRP3/3N4 w - - 0 1)

Cuppini, Alessandro

Source?, 0000

1n6/bQ6/p7/p3Pp2/r2k3K/1P1NpP2/2nRP3/3N4

#2

9 + 9

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Sb4+?
      • 1...Kc5
        • 2.Rd5#
      • 1...exd2
        • 2.Qd5#
      • 1...Kxe5!
    • 1.Sf4+?
      • 1...Kc5
        • 2.Rd5#
      • 1...exd2
        • 2.Qd5#
      • 1...Kxe5!
    • 1.Qc6?
      • threat
        • 2.Qd6#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb4
        • 2.Qc4#
      • 1...Sxc6!
    • 1.Qe7?
      • threat
        • 2.Qd6#
      • 1...Kd5+
        • 2.Sb4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb4!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qd6#
      • 1...Kd5+
        • 2.Sf4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(i);N_GUARD::QAR(I)
    • S(i);N_GUARD::QAR(I),XS(i)
    • P(f);N_GUARD::QAR1(I)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);OGATE,P_PINS(E),S_FLIGHT::R1(B)
        • P(b);XR(B)::QAR1(I)
      • Refutation
        • K(d);P_PINS(E),S_FLIGHT,XP(H)
    • Try
      • S(E);CHECK
      • Vars
        • K(d);OGATE,P_PINS(E),S_FLIGHT::R1(B)
        • P(b);XR(B)::QAR1(I)
      • Refutation
        • K(d);P_PINS(E),S_FLIGHT,XP(H)
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • B(h);N_GUARD::QAB1(I),XB(h)
        • S(a);S_CUTR(c)::QAR1(I)
      • Refutation
        • S(i);XQ(I)
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • K(d);CHECK,P-FLIGHT::R(B)+S(E),DCHECK
        • B(h);N_GUARD::QAB1(I),XB(h)
      • Refutation
        • S(a);
  • Actual
    • Q(I);
    • Threat
      • QAR2(I)
    • Vars
      • K(d);CHECK,P-FLIGHT::R(B)+S(E),DCHECK
      • B(h);N_GUARD::QAB1(I),XB(h)
      • S(a);S_CUTR(c)::QAR1(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).