MESON Chess Problem Database

Problem Display
PID: 103319 (1N6/B7/8/pkpr1R2/b7/1n1R4/N1Q5/n1bK4 w - - 0 1)

Mari, Alberto

Il Littorale, 1929-1931

1N6/B7/8/pkpr1R2/b7/1n1R4/N1Q5/n1bK4

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3+
      • 2.Qxd3#
  • Tries
    • 1.Rdxd5?
      • threat
        • 2.Qd3#
        • 2.Qe2#
      • 1...Bd2
        • 2.Qd3#
      • 1...Sd2
        • 2.Rxc5#
      • 1...Sd4
        • 2.Rxc5#
      • 1...Sxc2!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Rdxd5#
      • 1...Rxd3+
        • 2.Qxd3#
      • 1...Sd2+
        • 2.Rb3#
      • 1...Sd4+
        • 2.Rb3#
      • 1...Kc4
        • 2.Rdxd5#
      • 1...Rxf5
        • 2.Rxb3#
        • 2.Rd5#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Re5
        • 2.Rxb3#
      • 1...Rd6
        • 2.Rd4#
        • 2.Rdd5#
        • 2.Rxd6#
      • 1...Rd7
        • 2.Rd4#
        • 2.Rdd5#
        • 2.Rd6#
        • 2.Rxd7#
      • 1...Rd8
        • 2.Rd4#
        • 2.Rdd5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rxd8#
      • 1...c4
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(h);CHECK,OGATE,P_SPINP(g),XR(D)::QAB(C),XR(h)
  • Tries
    • Try
      • R(D);N_SPINR(D),P_PINP(g),XR(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB(C)
        • S(c);N_GUARD,P_PINQ(C)::R1(D),XP(g)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+R(D),XR(h)
    • Vars
      • R(h);CHECK,OGATE,P_SPINP(g),P_SPINR(h),XR(D)::QAB(C),XR(h)
      • S(c);CHECK,N_PINR(D)::QAB(C)+R(D),DCHECK
      • K(f);S_FLIGHT::QAB(C)+R(D),XR(h)
      • R(h);P_SPINP(g)::QAB(C)+R(D),XR(h)
      • R(h);N_PINR(D)::QAB(C)+R(D),DCHECK,XS(c)
      • P(g);P_SPINR(h),SBLOCK::QAB(C)
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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).