MESON Chess Problem Database

Problem Display
PID: 227560 (2K5/1p6/2k1p3/n1PR4/Ppqp1N2/8/8/2Q5 w - - 0 1)

Savina, Michele

Il Secolo, 1926

2K5/1p6/2k1p3/n1PR4/Ppqp1N2/8/8/2Q5

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Rd6#
    • 1...Qa2
      • 2.Rd6#
    • 1...Qe2
      • 2.Rd6#
    • 1...Qb3
      • 2.Rd6#
    • 1...Qd3
      • 2.Rd6#
    • 1...Qb5
      • 2.Rd6#
    • 1...Qa6
      • 2.Rd6#
    • 1...Qxc5
      • 2.Qxc5#
  • Tries
    • 1.Qxc4?
      • threat
        • 2.Rd6#
        • 2.Qb5#
      • 1...exd5
        • 2.Qb5#
        • 2.Qxd5#
      • 1...b5
        • 2.Rd6#
        • 2.Qxb5#
        • 2.axb5#
      • 1...Sxc4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Rd6#
      • 1...Kxd5
        • 2.Qh1#
      • 1...Qxd5
        • 2.Sxb4#
      • 1...Qxc5
        • 2.Qxc5#
      • 1...exd5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(b);::R1(E)
    • Q(b);OGATE,P_SPINQ(b),XP(D)::QAR1(A),XQ(b)
  • Tries
    • Try
      • Q(A);XQ(b)
      • Threat
        • DUALS(2)
      • Refutation
        • S(d);XQ(A)
  • Actual
    • S(C);
    • Threat
      • R1(E)
    • Vars
      • K(e);OGATEB,P_PINP(D),S_FLIGHT,XR(E)::QAB(A)
      • Q(b);N_GUARD,XR(E)::S(C),XP(a)
      • Q(b);OGATE,P_SPINQ(b),XP(D)::QAR1(A),XQ(b)
      • P(f);OGATEB,SBLOCK,XR(E)::QAR(A)
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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).