MESON Chess Problem Database

Problem Display
PID: 117850 (8/1Q1B4/1K6/8/1kPP4/7R/8/8 w - - 0 1)

Onkoud, Abdelaziz

Amirov MT, 1998

8/1Q1B4/1K6/8/1kPP4/7R/8/8

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kc6+?
      • 1...Ka4
        • 2.Qb5#
      • 1...Ka5
        • 2.Ra3#
        • 2.Qb5#
      • 1...Kxc4!
    • 1.Ka7+?
      • 1...Ka5
        • 2.Ra3#
        • 2.Rh5#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Kxc4!
    • 1.Kc7+?
      • 1...Ka5
        • 2.Ra3#
        • 2.Rh5#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Kxc4!
  • Keys
    • 1.Qe4!
      • 1...Kxc4
        • 2.d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);CHECK,P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • K(D);CHECK,S_FLIGHT
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • K(D);CHECK,S_FLIGHT
      • Refutation
        • K(a);P-FLIGHT,XP(B)
  • Actual
    • Q(E);
    • Vars
      • K(a);P-FLIGHT,XP(B)::QAR(E)+P(C)
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