MESON Chess Problem Database

Problem Display
PID: 93828 (1QN1k3/2r2N2/2Pp3B/3p3B/3K4/8/8/8 w - - 0 1)

Mach, Julius Zdenek

Ceske listy sachove, 1896

1QN1k3/2r2N2/2Pp3B/3p3B/3K4/8/8/8

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Sb6#
      • 2.Scxd6#
      • 2.Sa7#
  • Tries
    • 1.Sg5+?
      • 1...Kd8
        • 2.Se6#
      • 1...Rf7!
    • 1.Qb7?
      • 1...Rxc6
        • 2.Qxc6#
        • 2.Qe7#
      • 1...Rxf7
        • 2.Qd7#
        • 2.Qe7#
      • 1...Rxc8
        • 2.Qd7#
      • 1...Rd7
        • 2.Qxd7#
        • 2.cxd7#
      • 1...Re7
        • 2.Scxd6#
        • 2.Qxe7#
      • 1...Rxb7!
  • Keys
    • 1.Qb5!
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Rxf7
        • 2.c7#
      • 1...Rxc8
        • 2.Qe2#
      • 1...Ra7
        • 2.c7#
      • 1...Rb7
        • 2.cxb7#
      • 1...Rd7
        • 2.cxd7#
      • 1...Re7
        • 2.Scxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::S(E)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(F);
      • Vars
        • R(c);OGATE,XS(G)::QAB1(F)
      • Refutation
        • R(c);XQ(F)
  • Actual
    • Q(F);
    • Vars
      • R(c);OGATE,P_SPINR(c),XP(C)::QAB(F),XR(c)
      • R(c);OGATE,P_SPINR(c),XS(E)::QAB(F)+P(C)
      • R(c);N_GUARD,XS(G)::QAR(F)
      • R(c);OGATE::QAB(F)+P(C)
      • R(c);OGATE::QAB(F)+P(C),XR(c)
      • R(c);OGATE::P(C),XR(c)
      • R(c);SBLOCK::S(G),XP(b)
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