MESON Chess Problem Database

Problem Display
PID: 214706 (8/8/B2p1K2/3k4/1P2p3/4p1Q1/8/6B1 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1880

8/8/B2p1K2/3k4/1P2p3/4p1Q1/8/6B1

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ke7?
      • threat
        • 2.Qxd6#
      • 1...Kc6
        • 2.Qxd6#
      • 1...Kd4!
    • 1.Bh2?
      • threat
        • 2.Qxd6#
      • 1...Kc6
        • 2.Qxd6#
      • 1...Kd4!
    • 1.Bb5?
      • 1...e2
        • 2.Qb3#
        • 2.Qg5#
        • 2.Qg8#
      • 1...Kd4!
    • 1.Qg8+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kc6!
  • Keys
    • 1.Qg7!
      • 1...Kd4
        • 2.Ke6#
      • 1...Kc6
        • 2.Qb7#
      • 1...e2
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • QAR1(B),XP(d)
      • Vars
        • K(c);S_FLIGHT::QAR1(B),XP(d)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(a)
    • Try
      • B(A);
      • Threat
        • QAR1(B),XP(d)
      • Vars
        • K(c);S_FLIGHT::QAR1(B),XP(d)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(a)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT,P_SPINP(a)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::QAB(B)+K(E)
      • K(c);S_FLIGHT::QAB1(B)
      • P(a);::QAB(B)
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