MESON Chess Problem Database

Problem Display
PID: 110128 (8/8/8/8/RQ6/2P2B2/3kP3/1K6 w - - 0 1)

Lebedev, Aleksandr N

Kudesnik, 1999

8/8/8/8/RQ6/2P2B2/3kP3/1K6

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qd4#
  • Tries
    • 1.Qd6+?
      • 1...Kxc3
        • 2.Qb4#
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd4#
      • 1...Ke1!
    • 1.Qf4+?
      • 1...Kd1
        • 2.Qc1#
      • 1...Kxc3
        • 2.Ra3#
        • 2.Qe3#
        • 2.Qb4#
      • 1...Ke1!
    • 1.c4+?
      • 1...Kd1
        • 2.e3#
        • 2.e4#
      • 1...Ke3!
  • Keys
    • 1.Qh4!
      • 1...Kd1
        • 2.Rd4#
      • 1...Kxc3
        • 2.Qb4#
      • 1...Ke3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT::R(E)
      • K(a);OGATEB,S_FLIGHT,XP(C)::QAB1(F)
      • K(a);S_FLIGHT::QAB1(F)
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