MESON Chess Problem Database

Problem Display
PID: 57209 (n7/2p5/p7/4kb1N/3Rr3/K2Qb1r1/B1Np1p2/4R3 w - - 0 1)

Guidelli, Giorgio

7th Highly Comm., Brisbane Courier, 1918

n7/2p5/p7/4kb1N/3Rr3/K2Qb1r1/B1Np1p2/4R3

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Qxd4#
    • 1...Bxd4
      • 2.Qxg3#
    • 1...Bh3
      • 2.Qxe4#
    • 1...Bg4
      • 2.Qxe4#
    • 1...Be6
      • 2.Qxe4#
    • 1...Bd7
      • 2.Qxe4#
    • 1...Bc8
      • 2.Qxe4#
  • Tries
    • 1.Qb5+?
      • 1...c5
        • 2.Qxc5#
      • 1...axb5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qc5#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Bxd4
        • 2.Qxg3#
      • 1...Be6
        • 2.Rd5#
      • 1...Sb6
        • 2.Qxc7#
      • 1...Bf4
        • 2.Rd3#
      • 1...Bg5
        • 2.Rd3#
      • 1...Bh6
        • 2.Rd3#
      • 1...c5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(e);OGATE,P_SPINB(c),XR(F)::QAB1(E),XR(e)
    • B(c);OGATE,P_PINQ(E),P_SPINR(e),XR(F)::QAB(E),XR(d)
    • B(g);N_GUARD::QAR1(E),XR(e)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • P(i);P_SPINP(i)::QAR2(E),XP(i)
      • Refutation
        • P(h);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • R(e);OGATE,P_SPINB(c),P_SPINR(e),XR(F)::QAB1(E),XR(e)
      • B(c);OGATE,P_PINQ(E),P_SPINB(c),P_SPINR(e),XR(F)::QAB(E),XR(d)
      • B(g);SBLOCK::QAB(E)+R(F),DCHECK
      • S(j);N_GUARD::QAB(E),XP(i)
      • B(c);N_GUARD,P_PINQ(E),P_SPINR(e)::QAB(E)+R(F)
      • P(i);::QAR2(E),XP(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).