MESON Chess Problem Database

Problem Display
PID: 166962 (8/4pp2/5k2/8/4K3/Q7/6R1/b7 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachmatija, 2010

8/4pp2/5k2/8/4K3/Q7/6R1/b7

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qd6#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qh6#
      • 1...Ke6
        • 2.Qc6#
      • 1...e6
        • 2.Qg5#
      • 1...e5!
    • 1.Qd6+?
      • 1...e6
        • 2.Qd8#
      • 1...exd6!
    • 1.Qxa1+?
      • 1...e5
        • 2.Qxe5#
      • 1...Ke6!
    • 1.Qh3?
      • threat
        • 2.Qf5#
        • 2.Qh6#
      • 1...e6
        • 2.Qh4#
      • 1...e5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qf5#
      • 1...Ke6
        • 2.Qc6#
      • 1...Be5
        • 2.Qxe5#
      • 1...e5
        • 2.Qd6#
      • 1...e6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK,XB(a)
      • Vars
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);SBLOCK::QAB(B)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • P(c);N_GUARD::QAR2(B)
      • P(c);SBLOCK::QAB1(B)
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