MESON Chess Problem Database

Problem Display
PID: 56784 (B7/B3p3/2npp3/4k2p/2pp3N/3p1K2/5Q2/6R1 w - - 0 1)

Chepizhni, Viktor Ivanovich

4th Prize, Themes-64, 1966

B7/B3p3/2npp3/4k2p/2pp3N/3p1K2/5Q2/6R1

#2

6 + 9

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd4#
    • 1...Kf6
      • 2.Ke4#
    • 1...Sb4
      • 2.Bxd4#
      • 2.Qxd4#
    • 1...Sa5
      • 2.Bxd4#
      • 2.Qxd4#
    • 1...Sb8
      • 2.Bxd4#
      • 2.Qxd4#
    • 1...Sd8
      • 2.Bxd4#
      • 2.Qxd4#
  • Tries
    • 1.Bxc6?
      • threat
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Kf6
        • 2.Ke4#
      • 1...d5!
    • 1.Re1+?
      • 1...Kd5
        • 2.Qxd4#
      • 1...Kf6!
    • 1.Qe1+?
      • 1...Kd5
        • 2.Qa5#
        • 2.Qe4#
      • 1...Kf6!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qxd4#
        • 2.Qe4#
      • 1...Kf6
        • 2.Qf4#
      • 1...dxe3!
    • 1.Qg3+?
      • 1...Kf6
        • 2.Qf4#
        • 2.Qg7#
      • 1...Kd5!
    • 1.Qg2?
      • threat
        • 2.Qg5#
      • 1...Kd5
        • 2.Kf4#
      • 1...Kf6
        • 2.Qg7#
      • 1...d5!
    • 1.Qh2+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Kd5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qg5#
      • 1...Kd5
        • 2.Qa5#
      • 1...Kf6
        • 2.Qf4#
      • 1...d5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,P_SPINS(f)::QAR1(B),XP(c)
    • K(d);S_FLIGHT::QAR(B)+K(C)
  • Tries
    • Try
      • B(F);XS(f)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAR(B)+K(C)
      • Refutation
        • P(g);
    • Try
      • R(A);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINS(f)::QAR1(B),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(f)::QAB(B)+K(C)
        • K(d);S_FLIGHT::QAB1(B)
      • Refutation
        • P(g);
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(B)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(f)::QAR(B)
      • K(d);S_FLIGHT::QAR2(B)
      • P(g);SBLOCK::QAB1(B)
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