MESON Chess Problem Database

Problem Display
PID: 163684 (5K1k/RQ2p3/8/8/8/8/8/1b4b1 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2006

5K1k/RQ2p3/8/8/8/8/8/1b4b1

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qg7#
    • 1...e6
      • 2.Qg7#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qg7#
        • 2.Qg8#
      • 1...Kh7
        • 2.Qg7#
      • 1...Ba2
        • 2.Qh3#
        • 2.Qg7#
      • 1...Bh7
        • 2.Qg7#
      • 1...Bd4
        • 2.Qg8#
      • 1...Bg6!
    • 1.Qb2+?
      • 1...Kh7
        • 2.Qg7#
      • 1...e5
        • 2.Qxe5#
      • 1...Bd4!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qg8#
      • 1...Kh7
        • 2.Qh5#
      • 1...Ba2
        • 2.Qh5#
      • 1...Bh7
        • 2.Qe5#
      • 1...e6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::QAB1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c)::QAR1(B)
        • B(a);::QAB1(B)
        • B(b);::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c)::QAR1(B)
        • P(c);P_SPINP(c)::QAB(B),XP(c)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(c)::QAR2(B)
      • B(a);N_GUARD::QAR(B)
      • B(a);SBLOCK::QAB(B)
      • P(c);::QAB(B)
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