MESON Chess Problem Database

Problem Display
PID: 144768 (4N3/3p4/1p6/1Ppk3K/4RPP1/r1r1p3/2P1N3/7Q w - - 0 1)

Mussini, Luigi

New Orleans Times-Democrat, 1887

(First published on Sun Jun 5 1887)

4N3/3p4/1p6/1Ppk3K/4RPP1/r1r1p3/2P1N3/7Q

#2

9 + 7

14867 BCPS Library 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sxc3#
    • 1...Ra2
      • 2.Sxc3#
    • 1...Ra4
      • 2.Sxc3#
    • 1...Ra5
      • 2.Sxc3#
    • 1...Ra6
      • 2.Sxc3#
    • 1...Ra7
      • 2.Sxc3#
    • 1...Ra8
      • 2.Sxc3#
    • 1...Rb3
      • 2.c4#
    • 1...Rd3
      • 2.c4#
    • 1...Rc4
      • 2.Re5#
    • 1...c4
      • 2.Re5#
    • 1...d6
      • 2.Sf6#
      • 2.Sc7#
  • Tries
    • 1.Qd1+?
      • 1...Kxe4
        • 2.Qh1#
      • 1...Rd3!
  • Keys
    • 1.Qa1!
      • 1...Kxe4
        • 2.Qh1#
      • 1...Rxa1
        • 2.Sxc3#
      • 1...Rxc2
        • 2.Qe5#
      • 1...c4
        • 2.Re5#
      • 1...Rab3
        • 2.Qa8#
      • 1...Ra2
        • 2.Sxc3#
      • 1...Ra4
        • 2.Sxc3#
      • 1...Ra5
        • 2.Sxc3#
      • 1...Ra6
        • 2.Sxc3#
      • 1...Ra7
        • 2.Sxc3#
      • 1...Ra8
        • 2.Sxc3#
        • 2.Qxa8#
      • 1...Rcb3
        • 2.Qe5#
      • 1...Rd3
        • 2.Qe5#
      • 1...Rc4
        • 2.Re5#
        • 2.Qe5#
      • 1...d6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::S(C),XR(b)
    • R(b);OGATE::P(B)
    • R(b);SBLOCK::QAB(A)+R(D),DCHECK
    • P(d);SBLOCK::QAB(A)+R(D),DCHECK
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • Q(A);
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • R(a);N_GUARD,XQ(A)::S(C),XR(b)
      • R(b);OGATE,XP(B)::QAR1(A)
      • P(d);SBLOCK::R1(D)
      • R(a);OGATE::QAB(A)
      • R(a);N_GUARD::S(C),XR(b)
      • R(b);OGATE::QAR1(A)
      • P(g);SBLOCK::S(I)
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