MESON Chess Problem Database

Problem Display
PID: 69443 (8/4N1Q1/1Pp2n2/2Npk3/7p/1K5P/5P2/8 w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1898

8/4N1Q1/1Pp2n2/2Npk3/7p/1K5P/5P2/8

#2

7 + 5

5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qxf6#
  • Tries
    • 1.Kb4?
      • 1...Kd4
        • 2.Sxc6#
        • 2.Qxf6#
      • 1...Kf4
        • 2.Qxf6#
      • 1...Kd6
        • 2.Qxf6#
      • 1...d4!
    • 1.Qg3+?
      • 1...Kd4
        • 2.Qc3#
        • 2.Qe3#
      • 1...hxg3!
    • 1.Qg5+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Kd6!
  • Keys
    • 1.Qf8!
      • 1...Kd4
        • 2.Sxc6#
      • 1...Kf4
        • 2.Qxf6#
      • 1...Kd6
        • 2.Sg6#
      • 1...d4
        • 2.Qb8#
      • 1...Se4
        • 2.Sxc6#
      • 1...Sg4
        • 2.Sxc6#
      • 1...Sh5
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sxc6#
      • 1...Sh7
        • 2.Sxc6#
      • 1...Se8
        • 2.Sxc6#
      • 1...Sg8
        • 2.Sxc6#

Anticipated by 141426(1891)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(e),S_FLIGHT::QAR2(G),XS(e)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT::QAR2(G),XS(e)
      • Refutation
        • P(b);
    • Try
      • Q(G);CHECK,N_PINS(e)
      • Refutation
        • P(a);XQ(G)
    • Try
      • Q(G);CHECK,N_PINS(e)
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);N_PINS(e)
    • Vars
      • K(c);S_FLIGHT::S(F),XP(d)
      • K(c);P_SPINS(e),S_FLIGHT::QAR2(G),XS(e)
      • K(c);S_FLIGHT::QAB(G)+S(F)
      • P(b);SBLOCK::QAB(G)
      • S(e);::S(F),XP(d)
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