MESON Chess Problem Database

Problem Display
PID: 255084 (8/8/3N4/p2N4/p7/K1pkp3/3p4/3Q3B w - - 0 1)

Aleksandrov, Vladimir Aleksandrovich

Schach-Aktiv, 1995

8/8/3N4/p2N4/p7/K1pkp3/3p4/3Q3B

#2

5 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3?
      • 1...Kd4
        • 2.Qxe3#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...c2
        • 2.Qxe3#
      • 1...Kc2!
    • 1.Qxa4?
      • threat
        • 2.Sf4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...c2
        • 2.Qc4#
      • 1...e2
        • 2.Be4#
        • 2.Qe4#
      • 1...Ke2!
    • 1.Qg4?
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...c2
        • 2.Qc4#
      • 1...e2
        • 2.Qe4#
      • 1...Kc2!
    • 1.Qa1?
      • 1...Kc2
        • 2.Be4#
      • 1...Kd4
        • 2.Qxc3#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...c2
        • 2.Sf4#
      • 1...e2
        • 2.Qxc3#
      • 1...Ke2!
  • Keys
    • 1.Qg1!
      • 1...Kc2
        • 2.Be4#
      • 1...Ke2
        • 2.Sf4#
      • 1...Kd4
        • 2.Qxe3#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...c2
        • 2.Qxe3#
      • 1...e2
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a),P_PINP(d)
      • Vars
        • K(c);N_GUARD,N_SPINP(d),P-FLIGHT::QAB1(A),XP(d)
        • P(a);OGATEB::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
        • P(b);SBLOCK::QAR1(A),XP(d)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • Q(A);N_PINP(a),XP(e)
      • Threat
        • S(D)
      • Vars
        • P(a);OGATEB::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
        • P(b);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
        • P(b);::QAB1(A)
        • P(d);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::B(B)
        • K(c);N_GUARD,P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
        • P(a);OGATEB::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
        • P(b);SBLOCK::S(D)
        • P(d);SBLOCK::QAR1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::B(B)
      • K(c);N_GUARD,S_FLIGHT::S(D)
      • K(c);N_GUARD,P-FLIGHT,P_SPINP(d)::QAB1(A),XP(d)
      • P(a);OGATEB::QAR2(A),XQ(a)
      • P(a);OGATEB::QAR2(A),XS(a)
      • P(a);OGATEB::QAR2(A),XB(a)
      • P(a);OGATEB::QAR2(A),XR(a)
      • P(b);SBLOCK::QAR1(A),XP(d)
      • P(d);SBLOCK::B(B)
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