MESON Chess Problem Database

Problem Display
PID: 180986 (8/NN4n1/3p4/3kp3/4n1QR/1p6/1B6/4K3 w - - 0 1)

Turoverov, Valentin Alekseevich

Probleemblad, 1979

8/NN4n1/3p4/3kp3/4n1QR/1p6/1B6/4K3

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxe4#
    • 1...Sf2
      • 2.Qc4#
    • 1...Sc3
      • 2.Qc4#
    • 1...Sg3
      • 2.Qc4#
    • 1...Sc5
      • 2.Qc4#
    • 1...Sg5
      • 2.Qc4#
    • 1...Sf6
      • 2.Qc4#
    • 1...Sf5
      • 2.Qg8#
    • 1...Sh5
      • 2.Qg8#
    • 1...Se6
      • 2.Qxe4#
    • 1...Se8
      • 2.Qg8#
  • Tries
    • 1.Rh6?
      • 1...Kc4
        • 2.Qxe4#
      • 1...Sd2
        • 2.Rxd6#
      • 1...Sf2
        • 2.Rxd6#
      • 1...Sc3
        • 2.Rxd6#
      • 1...Sg3
        • 2.Rxd6#
      • 1...Sc5
        • 2.Rxd6#
      • 1...Sg5
        • 2.Rxd6#
      • 1...Sf5
        • 2.Qg8#
      • 1...Sh5
        • 2.Qe6#
        • 2.Qg8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#
        • 2.Qg8#
      • 1...Sf6!
    • 1.Qf3?
      • threat
        • 2.Qxb3#
      • 1...Kc4
        • 2.Qxe4#
      • 1...Ke6!
    • 1.Qg2?
      • 1...Kc4
        • 2.Qxe4#
      • 1...Sf5
        • 2.Qg8#
      • 1...Sh5
        • 2.Qg8#
      • 1...Se6
        • 2.Qxe4#
      • 1...Se8
        • 2.Qg8#
      • 1...Ke6!
    • 1.Qg6?
      • 1...Kc4
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qxd6#
      • 1...Sf2
        • 2.Qxd6#
      • 1...Sc3
        • 2.Qxd6#
      • 1...Sg3
        • 2.Qxd6#
      • 1...Sc5
        • 2.Qxd6#
      • 1...Sg5
        • 2.Qxd6#
      • 1...Sf5
        • 2.Qf7#
        • 2.Qg8#
      • 1...Sh5
        • 2.Qf7#
        • 2.Qg8#
      • 1...Se6
        • 2.Qxe4#
      • 1...Se8
        • 2.Qf7#
        • 2.Qg8#
      • 1...Sf6!
  • Keys
    • 1.Qd7!
      • 1...Kc4
        • 2.Qb5#
      • 1...Sd2
        • 2.Qxd6#
      • 1...Sf2
        • 2.Qxd6#
      • 1...Sc3
        • 2.Qxd6#
      • 1...Sg3
        • 2.Qxd6#
      • 1...Sc5
        • 2.Qxd6#
      • 1...Sg5
        • 2.Qxd6#
      • 1...Sf6
        • 2.Qxd6#
      • 1...Sf5
        • 2.Qf7#
      • 1...Sh5
        • 2.Qf7#
      • 1...Se6
        • 2.Qc6#
      • 1...Se8
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 11
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINS(b),S_FLIGHT::QAR2(C),XS(b)
    • S(b);OGATE::QAB1(C)
    • S(f);OGATE::QAB(C)
    • S(f);SBLOCK::QAB1(C),XS(b)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAR2(C),XS(b)
        • S(b);N_GUARD::R1(D),XP(e)
        • S(f);OGATE::QAB(C)
        • S(f);N_GUARD::QAB1(C),XS(f)
      • Refutation
        • S(b);
    • Try
      • Q(C);P_PINS(b)
      • Threat
        • QAB(C),XP(a)
      • Vars
        • K(c);S_FLIGHT::QAR2(C),XS(b)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • Q(C);P_PINS(b)
      • Vars
        • K(c);S_FLIGHT::QAR2(C),XS(b)
        • S(f);OGATE::QAB(C)
        • S(f);SBLOCK::QAB1(C),XS(b)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAR2(C),XS(b)
        • S(b);N_GUARD::QAR1(C),XP(e)
        • S(f);SBLOCK::QAB1(C),XS(b)
      • Refutation
        • S(b);
  • Actual
    • Q(C);P_PINP(e)
    • Vars
      • K(c);N_SPINP(e),P_SPINS(b),S_FLIGHT::QAB1(C)
      • S(b);N_GUARD::QAR1(C),XP(e)
      • S(f);N_GUARD::QAB(C)
      • S(f);SBLOCK::QAB1(C)
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