MESON Chess Problem Database

Problem Display
PID: 263784 (2N5/4K3/PNP5/1kp2R2/p7/p1B5/P3P3/8 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1903

2N5/4K3/PNP5/1kp2R2/p7/p1B5/P3P3/8

#2

9 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7?
      • 1...Kc4
        • 2.Rxc5#
      • 1...Kxc6
        • 2.Rxc5#
      • 1...Kxa6!
    • 1.Sa8?
      • 1...Kxa6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Sa7#
      • 1...Kc4!
    • 1.Rxc5+?
      • 1...Kxa6
        • 2.Ra5#
      • 1...Kxc5!
  • Keys
    • 1.Sd5!
      • 1...Kc4
        • 2.Sd6#
      • 1...Kxa6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Sa7#
      • 1...c4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(c);N_GUARD,N_SPINP(d),S_FLIGHT::R1(D),XP(d)
        • K(c);N_GUARD,N_SPINP(d),S_FLIGHT,XP(G)::R1(D),XP(d)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT,XP(E)
    • Try
      • S(F);
      • Vars
        • K(c);N_GUARD,N_SPINP(d),S_FLIGHT,XP(E)::S(F)
        • K(c);N_GUARD,N_SPINP(d),S_FLIGHT,XP(G)::S(I)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • R(D);CHECK,XP(d)
      • Vars
        • K(c);OGATE,S_FLIGHT,XP(E)::R1(D)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
  • Actual
    • S(F);N_PINP(d)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::S(I)
      • K(c);N_GUARD,S_FLIGHT,XP(E)::S(F)
      • K(c);N_GUARD,S_FLIGHT,XP(G)::S(I)
      • P(d);SBLOCK::R(D)+S(F)
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