MESON Chess Problem Database

Problem Display
PID: 87501 (4B2k/2K5/2Q1N1P1/8/8/6r1/8/8 w - - 0 1)

Duta, Badea

Buletin Problemistic, 2002

4B2k/2K5/2Q1N1P1/8/8/6r1/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bf7?
      • threat
        • 2.Qa8#
        • 2.Qe8#
      • 1...Ra3
        • 2.Qe8#
      • 1...Rb3
        • 2.Qe8#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Rd3
        • 2.Qe8#
      • 1...Rxg6!
    • 1.Qh1+?
      • 1...Kg8
        • 2.Bf7#
        • 2.Qh7#
      • 1...Rh3!
    • 1.Qc3+?
      • 1...Kg8
        • 2.Bf7#
        • 2.Qg7#
      • 1...Rxc3+!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Ba4#
        • 2.Bb5#
        • 2.Bc6#
        • 2.Bd7#
        • 2.Bf7#
      • 1...Rc3+
        • 2.Bc6#
      • 1...Kg8
        • 2.Ba4#
        • 2.Bb5#
        • 2.Bc6#
        • 2.Bd7#
        • 2.Bf7#
      • 1...Rxg6
        • 2.Bxg6#
      • 1...Ra3
        • 2.Ba4#
      • 1...Rb3
        • 2.Bb5#
      • 1...Rd3
        • 2.Bd7#
      • 1...Rf3
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR(A)
        • R(a);N_GUARD,P_PINQ(A)::QAB(A),XR(a)
      • Refutation
        • R(a);XP(C)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(a);CHECK,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • DUALS(5)
    • Vars
      • R(a);CHECK::QAR(A)+B(E)
      • R(a);OGATE,XP(C)::QAR(A)+B(E),XR(a)
      • R(a);::QAR(A)+B(E)
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