MESON Chess Problem Database

Problem Display
PID: 36195 (8/4B3/8/4RR2/pPkpB3/r2p1Q2/p7/K7 w - - 0 1)

Vahlakov, Yuri Nikoleyevich

2nd Prize, Shakhmaty, 1976

8/4B3/8/4RR2/pPkpB3/r2p1Q2/p7/K7

#2

7 + 6

3771 FIDE Album (1974-1976) 1980
56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qxd3#
    • 1...Kc3
      • 2.Qxd3#
  • Tries
    • 1.Bb7?
      • 1...Kb3
        • 2.Qxd3#
      • 1...Rb3
        • 2.Qc6#
      • 1...Rc3
        • 2.Qd5#
      • 1...d2
        • 2.Ba6#
      • 1...Kc3!
    • 1.Ra5?
      • 1...Kb3
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
      • 1...Rc3
        • 2.Bd5#
      • 1...d2
        • 2.Bd5#
      • 1...Rb3!
    • 1.Rb5?
      • 1...Kb3
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
      • 1...Rb3
        • 2.Rfc5#
      • 1...d2
        • 2.Rfc5#
      • 1...Rc3!
    • 1.Re6?
      • 1...Kb3
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
      • 1...Rb3
        • 2.Rc6#
      • 1...d2
        • 2.Rc6#
      • 1...Rc3!
    • 1.Rf6?
      • 1...Kb3
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
      • 1...Rb3
        • 2.Rc6#
      • 1...d2
        • 2.Rc6#
      • 1...Rc3!
  • Keys
    • 1.Rf8!
      • 1...Kb3
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
      • 1...Rb3
        • 2.Rc8#
      • 1...Rc3
        • 2.Qf7#
      • 1...d2
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
    • K(e);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
        • R(b);SBLOCK::QAR2(B)
        • R(b);SBLOCK::QAB1(B)
        • P(c);::B(D)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(c)
    • Try
      • R(E);
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
        • K(e);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
        • R(b);SBLOCK::B(D)
        • P(c);::B(D)
      • Refutation
        • R(b);
    • Try
      • R(E);
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
        • K(e);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
        • R(b);SBLOCK::R1(F)
        • P(c);::R1(F)
      • Refutation
        • R(b);
    • Try
      • R(E);
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
        • K(e);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
        • R(b);SBLOCK::R(E)
        • P(c);::R(E)
      • Refutation
        • R(b);
    • Try
      • R(F);
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
        • K(e);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
        • R(b);SBLOCK::R(F)
        • P(c);::R(F)
      • Refutation
        • R(b);
  • Actual
    • R(F);
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
      • K(e);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
      • R(b);SBLOCK::R(F)
      • R(b);SBLOCK::QAB(B)
      • P(c);::R(F)
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