MESON Chess Problem Database

Problem Display
PID: 140412 (3R4/3p1p1N/4kBp1/N6p/Kb1p3r/8/6Q1/1B6 w - - 0 1)

Gaidukov, P

Probleemblad, 1976

3R4/3p1p1N/4kBp1/N6p/Kb1p3r/8/6Q1/1B6

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qc6#
    • 1...Bd6
      • 2.Qa2#
    • 1...d5
      • 2.Qxd5#
  • Tries
    • 1.Sg5+?
      • 1...Kd6
        • 2.Qc6#
      • 1...Kxf6!
    • 1.Ba2+?
      • 1...Kd6
        • 2.Qc6#
      • 1...d5
        • 2.Qxd5#
      • 1...Kf5!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qc6#
        • 2.Qe5#
      • 1...Rxe4!
    • 1.Qc6+?
      • 1...Bd6
        • 2.Re8#
        • 2.Qc4#
      • 1...d6
        • 2.Re8#
      • 1...dxc6!
    • 1.Qa2+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd6!
    • 1.Qe2+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Re4!
    • 1.Qg5?
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Bd6
        • 2.Ba2#
      • 1...d6
        • 2.Sf8#
      • 1...Re4!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qc6#
      • 1...Bd6
        • 2.Qb3#
      • 1...d5
        • 2.Qxd5#
        • 2.Qc8#
        • 2.Qd7#
      • 1...d6
        • 2.Re8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);P-FLIGHT,P_SPINP(g)::QAR1(B)
    • B(a);SBLOCK,S_CUTP(g)::QAB(B)
    • P(g);::QAB1(B),XP(g)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(g)::QAR1(B)
      • Refutation
        • K(e);P-FLIGHT,XB(E)
    • Try
      • B(A);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(g)::QAR1(B)
        • P(g);P_SPINP(g)::QAB1(B),XP(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • R(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(G)
      • Refutation
        • P(g);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • P(g);P_SPINP(g)::QAB1(B),XP(g)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(g)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);P_SPINP(g),S_FLIGHT::QAR1(B)
        • K(e);P-FLIGHT,P_SPINP(g)::QAB1(B)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(g)::QAB1(B)
        • B(a);SBLOCK,S_CUTP(g)::B(A)
        • P(g);S_CUTB(a)::S(F)
      • Refutation
        • R(c);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(g)
    • Vars
      • K(e);P-FLIGHT,P_SPINP(g)::QAR1(B)
      • B(a);OGATE,SBLOCK::QAB(B)
      • P(g);SBLOCK,S_CUTB(a)::R(G)
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