MESON Chess Problem Database

Problem Display
PID: 207933 (8/2Q1R3/2Np2n1/2k1b3/K3p3/1n6/B3P3/8 w - - 0 1)

Bylevski, Aleksandr

Sachova skladba, 1992

8/2Q1R3/2Np2n1/2k1b3/K3p3/1n6/B3P3/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sb4#
  • Tries
    • 1.Sa5+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd4!
    • 1.Sxe5+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd4!
    • 1.Qa5+?
      • 1...Kc4
        • 2.Bxb3#
      • 1...Kxc6
        • 2.Rc7#
        • 2.Qb5#
      • 1...Sxa5!
  • Keys
    • 1.e3!
      • threat
        • 2.Sb4#
      • 1...Kc4
        • 2.Sb4#
      • 1...Kd5
        • 2.Sb4#
      • 1...Sxe7
        • 2.Sxe7#
      • 1...Sd4
        • 2.Sxd4#
      • 1...Sa5
        • 2.Sxa5#
      • 1...d5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(d);SBLOCK::QAR(E)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT,P_SPINS(a)::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(D);CHECK,XB(d)
      • Vars
        • K(c);OGATE,P-FLIGHT,P_SPINS(a)::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a)::B(A),XS(a)
      • Refutation
        • S(a);XQ(E)
  • Actual
    • P(B);
    • Threat
      • QAR(E)+S(D)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(a)::QAR(E)+S(D)
      • K(c);P-FLIGHT,P_SPINS(a)::S(D)
      • S(f);XR(F)::QAR(E)+S(D),XS(f)
      • S(a);::QAR(E)+S(D),XS(a)
      • P(e);SBLOCK::QAR(E)+S(D),XB(d)
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