MESON Chess Problem Database

Problem Display
PID: 100573 (8/4p3/3pp3/8/1N1k4/Q7/2B3PB/2K5 w - - 0 1)

Derka, Frantisek

Narodni listy, 1899

8/4p3/3pp3/8/1N1k4/Q7/2B3PB/2K5

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sa6?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd5!
    • 1.Bg1+?
      • 1...Kc4
        • 2.Bd3#
      • 1...Ke5!
    • 1.Bxd6?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...exd6!
  • Keys
    • 1.Bd3!
      • 1...Ke3
        • 2.Qa7#
      • 1...Kc5
        • 2.Bg1#
      • 1...d5
        • 2.Sc2#
      • 1...e5
        • 2.Bg1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);XP(b)
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • P(d);XB(D)
  • Actual
    • B(B);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT::B(D)
      • P(b);SBLOCK::S(F)
      • P(c);SBLOCK::B(D)
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